NOAA SWPC Alerts, Watches en Waarschuwingen

Het National Oceanic and Atmospheric Administration Space Weather Prediction Center (NOAA SWPC) is de officiële ruimteweer instantie van de Verenigde Staten die alerts, watches en waarschuwingen verstuurt met betrekking tot het ruimteweer. Hieronder zal je de meest recente ruimteweer alerts, watches en waarschuwingen vinden van het NOAA SWPC.

zondag 12 juli 2026

15:03 UTC

Space Weather Message Code: ALTK05
Serial Number: 2039
Issue Time: 2026 Jul 12 1503 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jul 12 1459 UTC
Synoptic Period: 1200-1500
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

14:11 UTC

Space Weather Message Code: WARK05
Serial Number: 2249
Issue Time: 2026 Jul 12 1411 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Jul 12 1410 UTC
Valid To: 2026 Jul 13 2100 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

05:32 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3715
Issue Time: 2026 Jul 12 0532 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3714
Begin Time: 2026 Jul 10 1126 UTC
Yesterday Maximum 2MeV Flux: 4620 pfu
Yesterday's max: 4,620 pfu

Yesterday's max: 4,620 pfu

03:46 UTC

Space Weather Message Code: ALTK04
Serial Number: 2673
Issue Time: 2026 Jul 12 0346 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 Jul 12 0259 UTC
Synoptic Period: 0000-0300
Active Warning: YES
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

02:12 UTC

Space Weather Message Code: ALTTP4
Serial Number: 714
Issue Time: 2026 Jul 12 0212 UTC

ALERT: Type IV Radio Emission
Begin Time: 2026 Jul 12 0053 UTC
Comment:

02:11 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1515
Issue Time: 2026 Jul 12 0211 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jul 12 0135 UTC
Estimate Velocity: 678 km/s
Comment:

01:34 UTC

Space Weather Message Code: WARK04
Serial Number: 5383
Issue Time: 2026 Jul 12 0134 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jul 12 0135 UTC
Valid To: 2026 Jul 12 2359 UTC
Warning Conditions: Onset
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

zaterdag 11 juli 2026

05:01 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3714
Issue Time: 2026 Jul 11 0501 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3713
Begin Time: 2026 Jul 10 1126 UTC
Yesterday Maximum 2MeV Flux: 2029 pfu
Yesterday's max: 2,030 pfu

Yesterday's max: 2,030 pfu

vrijdag 10 juli 2026

19:46 UTC

Space Weather Message Code: WATA20
Serial Number: 1115
Issue Time: 2026 Jul 10 1946 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Jul 11: None (Below G1) Jul 12: G1 (Minor) Jul 13: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

11:51 UTC

Space Weather Message Code: WARK04
Serial Number: 5382
Issue Time: 2026 Jul 10 1151 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5381
Valid From: 2026 Jul 09 1119 UTC
Now Valid Until: 2026 Jul 11 0300 UTC
Warning Condition: Persistence




NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

11:26 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3713
Issue Time: 2026 Jul 10 1126 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2026 Jul 10 1126 UTC
Station: GOES-19
Comment: Yesterday's max: 767 pfu


Yesterday's max: 767 pfu

donderdag 9 juli 2026

11:20 UTC

Space Weather Message Code: ALTK04
Serial Number: 2672
Issue Time: 2026 Jul 09 1120 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 Jul 09 1120 UTC
Synoptic Period: 0900-1200
Active Warning: YES
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

11:19 UTC

Space Weather Message Code: WARK04
Serial Number: 5381
Issue Time: 2026 Jul 09 1119 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jul 09 1119 UTC
Valid To: 2026 Jul 10 1200 UTC
Warning Conditions: Onset
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

woensdag 8 juli 2026

05:29 UTC

Space Weather Message Code: WARK04
Serial Number: 5380
Issue Time: 2026 Jul 08 0529 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jul 08 0528 UTC
Valid To: 2026 Jul 08 1200 UTC
Warning Conditions: Onset
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

dinsdag 7 juli 2026

23:18 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1514
Issue Time: 2026 Jul 07 2318 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jul 07 2256 UTC
Estimate Velocity: 1441 km/s
Comment:

14:56 UTC

Space Weather Message Code: ALTTP4
Serial Number: 713
Issue Time: 2026 Jul 07 1456 UTC

ALERT: Type IV Radio Emission
Begin Time: 2026 Jul 07 1435 UTC
Comment:

14:43 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1513
Issue Time: 2026 Jul 07 1443 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jul 07 1420 UTC
Estimate Velocity: 593 km/s
Comment:

05:07 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3712
Issue Time: 2026 Jul 07 0507 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3709
Begin Time: 2026 Jul 06 1149 UTC
Yesterday Maximum 2MeV Flux: 1936 pfu

05:06 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3711
Issue Time: 2026 Jul 07 0506 UTC

CANCEL ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Cancel Serial Number: 3710
Original Issue Time: 2026 Jul 07 0503 UTC
Incorrect maximum value for yesterday.

Incorrect maximum value for yesterday.

05:03 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3710
Issue Time: 2026 Jul 07 0503 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3709
Begin Time: 2026 Jul 06 1149 UTC
Yesterday Maximum 2MeV Flux: 1936 pfu
Yesterday's max: 194 pfu

Yesterday's max: 194 pfu

maandag 6 juli 2026

11:50 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3709
Issue Time: 2026 Jul 06 1150 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2026 Jul 06 1149 UTC
Station: GOES-19
Comment: Yesterday's max: 625 pfu


Yesterday's max: 625 pfu

zondag 5 juli 2026

18:22 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1512
Issue Time: 2026 Jul 05 1822 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jul 05 1626 UTC
Estimate Velocity: 959 km/s
Comment:

18:09 UTC

Space Weather Message Code: SUMXM5
Serial Number: 324
Issue Time: 2026 Jul 05 1809 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2026 Jul 05 1751 UTC
Maximum Time: 2026 Jul 05 1757 UTC
End Time: 2026 Jul 05 1802 UTC
Xray Class: M5.5
Optical Class:
Location: N15W87
Noaa Scale: R2 - Moderate
Comment:

NOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

18:02 UTC

Space Weather Message Code: ALTK04
Serial Number: 2671
Issue Time: 2026 Jul 05 1802 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 Jul 05 1759 UTC
Synoptic Period: 1500-1800
Active Warning: YES
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

18:00 UTC

Space Weather Message Code: ALTXMF
Serial Number: 539
Issue Time: 2026 Jul 05 1800 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026 Jul 05 1758 UTC
Noaa Scale: R2 - Moderate
Comment:

NOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

16:59 UTC

Space Weather Message Code: WARK04
Serial Number: 5379
Issue Time: 2026 Jul 05 1659 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jul 05 1658 UTC
Valid To: 2026 Jul 06 0300 UTC
Warning Conditions: Onset
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

02:56 UTC

Space Weather Message Code: WARK04
Serial Number: 5378
Issue Time: 2026 Jul 05 0256 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5377
Valid From: 2026 Jul 03 1209 UTC
Now Valid Until: 2026 Jul 05 1500 UTC
Warning Condition: Persistence




NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

00:27 UTC

Space Weather Message Code: WARK07
Serial Number: 152
Issue Time: 2026 Jul 05 0027 UTC

CANCEL WARNING: Geomagnetic K-index of 7 or greater expected
Cancel Serial Number: 151
Original Issue Time: 2026 Jul 04 0501 UTC
Wrong date in the original end time. Warning was supposed to expire at 04/1200z.

Wrong date in the original end time. Warning was supposed to expire at 04/1200z. NOAA Scale: G3 - Greater

00:05 UTC

Space Weather Message Code: WARK06
Serial Number: 666
Issue Time: 2026 Jul 05 0005 UTC

CANCEL WARNING: Geomagnetic K-index of 6 expected
Cancel Serial Number: 665
Original Issue Time: 2026 Jul 04 1357 UTC
Wrong date in the original end time. Warning was supposed to expire at 04/2100z.

Wrong date in the original end time. Warning was supposed to expire at 04/2100z.NOAA Scale: G2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

zaterdag 4 juli 2026

23:00 UTC

Space Weather Message Code: ALTK05
Serial Number: 2038
Issue Time: 2026 Jul 04 2300 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jul 04 2301 UTC
Synoptic Period: 2100-2400
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

21:16 UTC

Space Weather Message Code: SUMX01
Serial Number: 220
Issue Time: 2026 Jul 04 2116 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2026 Jul 04 2029 UTC
Maximum Time: 2026 Jul 04 2041 UTC
End Time: 2026 Jul 04 2047 UTC
Xray Class: X1.3
Optical Class:
Location: N15W75
Noaa Scale: R3 - Strong
Comment:

NOAA Scale: R3 - Strong

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.

21:15 UTC

Space Weather Message Code: SUM10R
Serial Number: 922
Issue Time: 2026 Jul 04 2115 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2026 Jul 04 2040 UTC
Maximum Time: 2026 Jul 04 2041 UTC
End Time: 2026 Jul 04 2047 UTC
Peak Flux: 890 sfu
Duration: 7 minutes
Latest Penticton Noon Flux: 161 sfu
Comment:

21:12 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1511
Issue Time: 2026 Jul 04 2112 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jul 04 2043 UTC
Estimate Velocity: 2714 km/s
Comment:

20:43 UTC

Space Weather Message Code: ALTXMF
Serial Number: 538
Issue Time: 2026 Jul 04 2043 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026 Jul 04 2040 UTC
Noaa Scale: R2 - Moderate
Comment:

NOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

20:22 UTC

Space Weather Message Code: ALTK05
Serial Number: 2037
Issue Time: 2026 Jul 04 2022 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jul 04 2018 UTC
Synoptic Period: 1800-2100
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

17:00 UTC

Space Weather Message Code: ALTK06
Serial Number: 723
Issue Time: 2026 Jul 04 1700 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026 Jul 04 1655 UTC
Synoptic Period: 1500-1800
Active Warning: YES
Noaa Scale: G2 - Moderate
Comment:

NOAA Scale: G2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

16:14 UTC

Space Weather Message Code: ALTK05
Serial Number: 2036
Issue Time: 2026 Jul 04 1614 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jul 04 1610 UTC
Synoptic Period: 1500-1800
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

14:21 UTC

Space Weather Message Code: WARK04
Serial Number: 5377
Issue Time: 2026 Jul 04 1421 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5376
Valid From: 2026 Jul 03 1209 UTC
Now Valid Until: 2026 Jul 05 0300 UTC
Warning Condition: Persistence




NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

14:12 UTC

Space Weather Message Code: WARK05
Serial Number: 2248
Issue Time: 2026 Jul 04 1412 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2247
Valid From: 2026 Jul 04 0100 UTC
Now Valid Until: 2026 Jul 04 2359 UTC
Warning Condition: Persistence


NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

13:58 UTC

Space Weather Message Code: ALTK06
Serial Number: 722
Issue Time: 2026 Jul 04 1358 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026 Jul 04 1358 UTC
Synoptic Period: 1200-1500
Active Warning: YES
Noaa Scale: G2 - Moderate
Comment:

NOAA Scale: G2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

13:57 UTC

Space Weather Message Code: WARK06
Serial Number: 665
Issue Time: 2026 Jul 04 1357 UTC

WARNING: Geomagnetic K-index of 6 expected
Valid From: 2026 Jul 04 1356 UTC
Valid To: 2026 Jul 05 2100 UTC
Warning Conditions: Onset
Noaa Scale: G2 - Moderate
Comment:

NOAA Scale: G2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

13:22 UTC

Space Weather Message Code: ALTK05
Serial Number: 2035
Issue Time: 2026 Jul 04 1321 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jul 04 1319 UTC
Synoptic Period: 1200-1500
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

10:43 UTC

Space Weather Message Code: ALTK05
Serial Number: 2034
Issue Time: 2026 Jul 04 1043 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jul 04 1043 UTC
Synoptic Period: 0900-1200
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

08:39 UTC

Space Weather Message Code: ALTK06
Serial Number: 721
Issue Time: 2026 Jul 04 0839 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026 Jul 04 0839 UTC
Synoptic Period: 0600-0900
Active Warning: YES
Noaa Scale: G2 - Moderate
Comment:

NOAA Scale: G2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

07:15 UTC

Space Weather Message Code: ALTK05
Serial Number: 2033
Issue Time: 2026 Jul 04 0715 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jul 04 0715 UTC
Synoptic Period: 0600-0900
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

05:10 UTC

Space Weather Message Code: ALTK07
Serial Number: 218
Issue Time: 2026 Jul 04 0509 UTC

ALERT: Geomagnetic K-index of 7
Threshold Reached: 2026 Jul 04 0509 UTC
Synoptic Period: 0300-0600
Active Warning: YES
Noaa Scale: G3 - Strong
Comment:

NOAA Scale: G3 - Strong

05:01 UTC

Space Weather Message Code: WARK07
Serial Number: 151
Issue Time: 2026 Jul 04 0501 UTC

WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2026 Jul 04 0500 UTC
Valid To: 2026 Jul 05 1200 UTC
Warning Conditions: Onset
Noaa Scale: G3 - Greater
Comment:

NOAA Scale: G3 - Greater

04:50 UTC

Space Weather Message Code: ALTK06
Serial Number: 720
Issue Time: 2026 Jul 04 0450 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026 Jul 04 0450 UTC
Synoptic Period: 0300-0600
Active Warning: YES
Noaa Scale: G2 - Moderate
Comment:

NOAA Scale: G2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

04:23 UTC

Space Weather Message Code: ALTK05
Serial Number: 2032
Issue Time: 2026 Jul 04 0423 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jul 04 0423 UTC
Synoptic Period: 0300-0600
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

02:56 UTC

Space Weather Message Code: ALTK06
Serial Number: 719
Issue Time: 2026 Jul 04 0250 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026 Jul 04 0248 UTC
Synoptic Period: 0000-0300
Active Warning: YES
Noaa Scale: G2 - Moderate
Comment:

NOAA Scale: G2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

02:56 UTC

Space Weather Message Code: WARK04
Serial Number: 5376
Issue Time: 2026 Jul 04 0256 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5375
Valid From: 2026 Jul 03 1209 UTC
Now Valid Until: 2026 Jul 04 1800 UTC
Warning Condition: Persistence
Conditions likely persisting.

Conditions likely persisting.

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

02:55 UTC

Space Weather Message Code: WARK05
Serial Number: 2247
Issue Time: 2026 Jul 04 0255 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2246
Valid From: 2026 Jul 04 0100 UTC
Now Valid Until: 2026 Jul 04 1500 UTC
Warning Condition: Persistence
Conditions likely persiststing.

Conditions likely persiststing.NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

02:54 UTC

Space Weather Message Code: WARK06
Serial Number: 664
Issue Time: 2026 Jul 04 0254 UTC

EXTENDED WARNING: Geomagnetic K-index of 6 expected
Extension to Serial Number: 663
Valid From: 2026 Jul 04 0227 UTC
Now Valid Until: 2026 Jul 04 1200 UTC
Warning Condition: Persistence
Conditions will likely persist.

Conditions will likely persist.NOAA Scale: G2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

02:28 UTC

Space Weather Message Code: WARK06
Serial Number: 663
Issue Time: 2026 Jul 04 0228 UTC

WARNING: Geomagnetic K-index of 6 expected
Valid From: 2026 Jul 04 0227 UTC
Valid To: 2026 Jul 04 0600 UTC
Warning Conditions: Onset
Noaa Scale: G2 - Moderate
Comment:

NOAA Scale: G2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

02:05 UTC

Space Weather Message Code: ALTK05
Serial Number: 2031
Issue Time: 2026 Jul 04 0205 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jul 04 0206 UTC
Synoptic Period: 0000-0300
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

01:25 UTC

Space Weather Message Code: WARK05
Serial Number: 2246
Issue Time: 2026 Jul 04 0125 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Jul 04 0100 UTC
Valid To: 2026 Jul 04 0600 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment: Correcting for wrong end date


Correcting for wrong end dateNOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

01:24 UTC

Space Weather Message Code: WARK04
Serial Number: 5375
Issue Time: 2026 Jul 04 0124 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5374
Valid From: 2026 Jul 03 1209 UTC
Now Valid Until: 2026 Jul 04 1200 UTC
Warning Condition: Persistence




NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

01:01 UTC

Space Weather Message Code: WARK05
Serial Number: 2246
Issue Time: 2026 Jul 04 0101 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Jul 04 0100 UTC
Valid To: 2026 Jul 05 0600 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

vrijdag 3 juli 2026

20:54 UTC

Space Weather Message Code: ALTK04
Serial Number: 2670
Issue Time: 2026 Jul 03 2054 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 Jul 03 2049 UTC
Synoptic Period: 1800-2100
Active Warning: YES
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

20:20 UTC

Space Weather Message Code: SUM10R
Serial Number: 921
Issue Time: 2026 Jul 03 2020 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2026 Jul 03 1856 UTC
Maximum Time: 2026 Jul 03 1857 UTC
End Time: 2026 Jul 04 1859 UTC
Peak Flux: 780 sfu
Duration: 3 minutes
Latest Penticton Noon Flux: 203 sfu
Comment:

19:39 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1510
Issue Time: 2026 Jul 03 1939 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jul 03 1900 UTC
Estimate Velocity: 579 km/s
Comment:

19:11 UTC

Space Weather Message Code: SUMXM5
Serial Number: 323
Issue Time: 2026 Jul 03 1911 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2026 Jul 03 1857 UTC
Maximum Time: 2026 Jul 03 1859 UTC
End Time: 2026 Jul 04 1903 UTC
Xray Class: M6.3
Optical Class:
Location: S06W46
Noaa Scale: R2 - Moderate
Comment:

NOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

19:00 UTC

Space Weather Message Code: ALTXMF
Serial Number: 537
Issue Time: 2026 Jul 03 1900 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026 Jul 03 1856 UTC
Noaa Scale: R2 - Moderate
Comment:

NOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

18:59 UTC

Space Weather Message Code: SUMXM5
Serial Number: 322
Issue Time: 2026 Jul 03 1859 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2026 Jul 03 1749 UTC
Maximum Time: 2026 Jul 03 1811 UTC
End Time: 2026 Jul 04 1832 UTC
Xray Class: M6.7
Optical Class:
Location: N17W66
Noaa Scale: R2 - Moderate
Comment:

NOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

18:47 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1509
Issue Time: 2026 Jul 03 1847 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jul 03 1805 UTC
Estimate Velocity: 1831 km/s
Comment:

18:18 UTC

Space Weather Message Code: SUM10R
Serial Number: 920
Issue Time: 2026 Jul 03 1818 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2026 Jul 03 1806 UTC
Maximum Time: 2026 Jul 03 1808 UTC
End Time: 2026 Jul 04 1809 UTC
Peak Flux: 220 sfu
Duration: 3 minutes
Latest Penticton Noon Flux: 203 sfu
Comment:

18:10 UTC

Space Weather Message Code: ALTXMF
Serial Number: 536
Issue Time: 2026 Jul 03 1810 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026 Jul 03 1807 UTC
Noaa Scale: R2 - Moderate
Comment:

NOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

12:09 UTC

Space Weather Message Code: WARK04
Serial Number: 5374
Issue Time: 2026 Jul 03 1209 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jul 03 1209 UTC
Valid To: 2026 Jul 04 0300 UTC
Warning Conditions: Onset
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

11:38 UTC

Space Weather Message Code: WARSUD
Serial Number: 256
Issue Time: 2026 Jul 03 1138 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2026 Jul 03 1157 UTC
Valid To: 2026 Jul 03 1227 UTC
Ip Shock: 2026-07-03 11:20
Comment:

11:24 UTC

Space Weather Message Code: WATA30
Serial Number: 278
Issue Time: 2026 Jul 03 1123 UTC

WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Jul 03: G2 (Moderate) Jul 04: G2 (Moderate) Jul 05: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: Added G1 (Minor) Watch for 05 Jul.


Added G1 (Minor) Watch for 05 Jul.

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

donderdag 2 juli 2026

09:35 UTC

Space Weather Message Code: WATA30
Serial Number: 278
Issue Time: 2026 Jul 02 0935 UTC

WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Jul 02: None (Below G1) Jul 03: G2 (Moderate) Jul 04: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

woensdag 1 juli 2026

23:20 UTC

Space Weather Message Code: SUMXM5
Serial Number: 321
Issue Time: 2026 Jul 01 2320 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2026 Jul 01 2257 UTC
Maximum Time: 2026 Jul 01 2309 UTC
End Time: 2026 Jul 02 2313 UTC
Xray Class: M8.5
Optical Class: 2b
Location: S07W25
Noaa Scale: R2 - Moderate
Comment:

NOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

23:08 UTC

Space Weather Message Code: ALTXMF
Serial Number: 535
Issue Time: 2026 Jul 01 2308 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026 Jul 01 2306 UTC
Noaa Scale: R2 - Moderate
Comment:

NOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

12:40 UTC

Space Weather Message Code: WATA30
Serial Number: 277
Issue Time: 2026 Jul 01 1240 UTC

WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Jul 01: G1 (Minor) Jul 02: None (Below G1) Jul 03: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

05:54 UTC

Space Weather Message Code: WARK05
Serial Number: 2245
Issue Time: 2026 Jul 01 0554 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2244
Valid From: 2026 Jun 30 1943 UTC
Now Valid Until: 2026 Jul 01 1800 UTC
Warning Condition: Persistence


NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

05:53 UTC

Space Weather Message Code: WARK04
Serial Number: 5373
Issue Time: 2026 Jul 01 0553 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5372
Valid From: 2026 Jun 30 1209 UTC
Now Valid Until: 2026 Jul 01 2100 UTC
Warning Condition: Persistence




NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

02:59 UTC

Space Weather Message Code: ALTK05
Serial Number: 2030
Issue Time: 2026 Jul 01 0259 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jul 01 0259 UTC
Synoptic Period: 0000-0300
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

dinsdag 30 juni 2026

21:09 UTC

Space Weather Message Code: ALTTP4
Serial Number: 712
Issue Time: 2026 Jun 30 2109 UTC

ALERT: Type IV Radio Emission
Begin Time: 2026 Jun 30 2055 UTC
Comment: PAL


PAL

21:07 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1508
Issue Time: 2026 Jun 30 2107 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 30 2044 UTC
Estimate Velocity: 1496 km/s
Comment: PAL


PAL

21:06 UTC

Space Weather Message Code: SUM10R
Serial Number: 919
Issue Time: 2026 Jun 30 2106 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2026 Jun 30 2040 UTC
Maximum Time: 2026 Jun 30 2045 UTC
End Time: 2026 Jul 01 2049 UTC
Peak Flux: 409 sfu
Duration: 9 minutes
Latest Penticton Noon Flux: 203 sfu
Comment:

21:04 UTC

Space Weather Message Code: SUMX01
Serial Number: 219
Issue Time: 2026 Jun 30 2104 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2026 Jun 30 2034 UTC
Maximum Time: 2026 Jun 30 2050 UTC
End Time: 2026 Jun 30 2100 UTC
Xray Class: X1.1
Optical Class: Sf
Location: N18W18
Noaa Scale: R3 - Strong
Comment:

NOAA Scale: R3 - Strong

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.

20:48 UTC

Space Weather Message Code: ALTXMF
Serial Number: 534
Issue Time: 2026 Jun 30 2048 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026 Jun 30 2045 UTC
Noaa Scale: R2 - Moderate
Comment:

NOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

20:28 UTC

Space Weather Message Code: ALTK05
Serial Number: 2029
Issue Time: 2026 Jun 30 2028 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jun 30 2027 UTC
Synoptic Period: 1800-2100
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

19:46 UTC

Space Weather Message Code: WARK05
Serial Number: 2244
Issue Time: 2026 Jun 30 1943 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Jun 30 1943 UTC
Valid To: 2026 Jul 01 0600 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

19:46 UTC

Space Weather Message Code: WARK04
Serial Number: 5372
Issue Time: 2026 Jun 30 1946 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5371
Valid From: 2026 Jun 30 1209 UTC
Now Valid Until: 2026 Jul 01 0900 UTC
Warning Condition: Persistence




NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

17:11 UTC

Space Weather Message Code: ALTK04
Serial Number: 2669
Issue Time: 2026 Jun 30 1711 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 Jun 30 1711 UTC
Synoptic Period: 1500-1800
Active Warning: YES
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

16:36 UTC

Space Weather Message Code: WARPX1
Serial Number: 627
Issue Time: 2026 Jun 30 1636 UTC

CANCEL WARNING: Proton 10MeV Integral Flux above 10pfu expected
Cancel Serial Number: 626
Original Issue Time: 2026 Jun 30 1600 UTC
Conditions no longer justify warning.

Conditions no longer justify warning.NOAA Scale: S1 - Minor

16:00 UTC

Space Weather Message Code: WARPX1
Serial Number: 626
Issue Time: 2026 Jun 30 1600 UTC

WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2026 Jun 30 1600 UTC
Valid To: 2026 Jun 30 2359 UTC
Warning Conditions: Onset
Noaa Scale: S1 - Minor
Comment:

NOAA Scale: S1 - Minor

13:40 UTC

Space Weather Message Code: SUMXM5
Serial Number: 320
Issue Time: 2026 Jun 30 1340 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2026 Jun 30 1237 UTC
Maximum Time: 2026 Jun 30 1257 UTC
End Time: 2026 Jun 30 1323 UTC
Xray Class: M5.8
Optical Class: 3b
Location: S07W55
Noaa Scale: R2 - Moderate
Comment: Corrected for end date as 30 June


Corrected for end date as 30 JuneNOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

13:32 UTC

Space Weather Message Code: SUMXM5
Serial Number: 320
Issue Time: 2026 Jun 30 1332 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2026 Jun 30 1237 UTC
Maximum Time: 2026 Jun 30 1257 UTC
End Time: 2026 Jul 01 1323 UTC
Xray Class: M5.8
Optical Class: 3b
Location: S07W55
Noaa Scale: R2 - Moderate
Comment:

NOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

12:52 UTC

Space Weather Message Code: ALTXMF
Serial Number: 533
Issue Time: 2026 Jun 30 1252 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026 Jun 30 1251 UTC
Noaa Scale: R2 - Moderate
Comment:

NOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

12:10 UTC

Space Weather Message Code: WARK04
Serial Number: 5371
Issue Time: 2026 Jun 30 1210 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jun 30 1209 UTC
Valid To: 2026 Jun 30 2359 UTC
Warning Conditions: Onset
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

04:59 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3708
Issue Time: 2026 Jun 30 0459 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3707
Begin Time: 2026 Jun 26 1345 UTC
Yesterday Maximum 2MeV Flux: 2637 pfu

maandag 29 juni 2026

05:02 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3707
Issue Time: 2026 Jun 29 0502 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3706
Begin Time: 2026 Jun 26 1345 UTC
Yesterday Maximum 2MeV Flux: 2637 pfu

zondag 28 juni 2026

10:41 UTC

Space Weather Message Code: WATA20
Serial Number: 1114
Issue Time: 2026 Jun 28 1041 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Jun 28: None (Below G1) Jun 29: G1 (Minor) Jun 30: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

05:07 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3706
Issue Time: 2026 Jun 28 0507 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3705
Begin Time: 2026 Jun 26 1345 UTC
Yesterday Maximum 2MeV Flux: 3793 pfu

zaterdag 27 juni 2026

07:13 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3705
Issue Time: 2026 Jun 27 0713 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3704
Begin Time: 2026 Jun 26 1345 UTC
Yesterday Maximum 2MeV Flux: 1636 pfu

vrijdag 26 juni 2026

14:06 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3704
Issue Time: 2026 Jun 26 1406 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2026 Jun 26 1345 UTC
Station: GOES-19
Comment: Yesterday's max: 480 pfu


Yesterday's max: 480 pfu

donderdag 25 juni 2026

23:43 UTC

Space Weather Message Code: WARK04
Serial Number: 5370
Issue Time: 2026 Jun 25 2343 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5369
Valid From: 2026 Jun 25 1939 UTC
Now Valid Until: 2026 Jun 26 1200 UTC
Warning Condition: Persistence




NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

19:41 UTC

Space Weather Message Code: ALTK04
Serial Number: 2668
Issue Time: 2026 Jun 25 1941 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 Jun 25 1940 UTC
Synoptic Period: 1800-2100
Active Warning: YES
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

19:39 UTC

Space Weather Message Code: WARK04
Serial Number: 5369
Issue Time: 2026 Jun 25 1939 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jun 25 1939 UTC
Valid To: 2026 Jun 25 2359 UTC
Warning Conditions: Onset
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

08:47 UTC

Space Weather Message Code: WARK05
Serial Number: 2243
Issue Time: 2026 Jun 25 0847 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2242
Valid From: 2026 Jun 25 0337 UTC
Now Valid Until: 2026 Jun 25 1500 UTC
Warning Condition: Persistence


NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

08:46 UTC

Space Weather Message Code: WARK04
Serial Number: 5368
Issue Time: 2026 Jun 25 0846 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5367
Valid From: 2026 Jun 24 1740 UTC
Now Valid Until: 2026 Jun 25 1800 UTC
Warning Condition: Persistence




NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

03:56 UTC

Space Weather Message Code: ALTK05
Serial Number: 2028
Issue Time: 2026 Jun 25 0356 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jun 25 0343 UTC
Synoptic Period: 0300-0600
Active Warning: YES
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

03:41 UTC

Space Weather Message Code: WARK05
Serial Number: 2242
Issue Time: 2026 Jun 25 0341 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Jun 25 0337 UTC
Valid To: 2026 Jun 25 0900 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment: COR for end date/time


COR for end date/timeNOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

03:38 UTC

Space Weather Message Code: WARK05
Serial Number: 2242
Issue Time: 2026 Jun 25 0338 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Jun 25 0337 UTC
Valid To: 2026 Jun 26 0900 UTC
Warning Conditions: Onset
Noaa Scale: G1 - Minor
Comment:

NOAA Scale: G1 - Minor

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

woensdag 24 juni 2026

23:54 UTC

Space Weather Message Code: WARK04
Serial Number: 5367
Issue Time: 2026 Jun 24 2354 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5366
Valid From: 2026 Jun 24 1740 UTC
Now Valid Until: 2026 Jun 25 1200 UTC
Warning Condition: Persistence




NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

19:04 UTC

Space Weather Message Code: WARK04
Serial Number: 5366
Issue Time: 2026 Jun 24 1904 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jun 24 1740 UTC
Valid To: 2026 Jun 24 2359 UTC
Warning Conditions: Onset
Comment: Correcting the wrong End Date


Correcting the wrong End Date

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

17:48 UTC

Space Weather Message Code: ALTK04
Serial Number: 2667
Issue Time: 2026 Jun 24 1748 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 Jun 24 1746 UTC
Synoptic Period: 1500-1800
Active Warning: YES
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

17:46 UTC

Space Weather Message Code: WARK04
Serial Number: 5366
Issue Time: 2026 Jun 24 1746 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jun 24 1740 UTC
Valid To: 2026 Jun 25 2359 UTC
Warning Conditions: Onset
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

zondag 21 juni 2026

19:51 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1507
Issue Time: 2026 Jun 21 1951 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 21 1932 UTC
Estimate Velocity: 380 km/s
Comment:

19:48 UTC

Space Weather Message Code: SUMXM5
Serial Number: 319
Issue Time: 2026 Jun 21 1948 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2026 Jun 21 1917 UTC
Maximum Time: 2026 Jun 21 1929 UTC
End Time: 2026 Jun 22 1935 UTC
Xray Class: M6.8
Optical Class: 2b
Location: S07E55
Noaa Scale: R2 - Moderate
Comment:

NOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

19:30 UTC

Space Weather Message Code: ALTXMF
Serial Number: 532
Issue Time: 2026 Jun 21 1930 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026 Jun 21 1927 UTC
Noaa Scale: R2 - Moderate
Comment:

NOAA Scale: R2 - Moderate

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

zaterdag 20 juni 2026

04:07 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1506
Issue Time: 2026 Jun 20 0407 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 20 0407 UTC
Estimate Velocity: 300 km/s
Comment:

04:06 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1505
Issue Time: 2026 Jun 20 0406 UTC

CANCEL ALERT: Type II Radio Emission
Cancel Serial Number: 1504
Original Issue Time: 2026 Jun 20 0403 UTC
Cancelling duplicate Type-II Alert

Cancelling duplicate Type-II Alert

04:03 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1504
Issue Time: 2026 Jun 20 0403 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 20 0300 UTC
Estimate Velocity: 300 km/s
Comment:

04:03 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1504
Issue Time: 2026 Jun 20 0403 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 20 0300 UTC
Estimate Velocity: 300 km/s
Comment:

04:03 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1504
Issue Time: 2026 Jun 20 0403 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 20 0300 UTC
Estimate Velocity: 300 km/s
Comment:

donderdag 18 juni 2026

15:07 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3703
Issue Time: 2026 Jun 18 1507 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2026 Jun 18 1507 UTC
Station: GOES-19
Comment:

dinsdag 16 juni 2026

11:24 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3702
Issue Time: 2026 Jun 16 1124 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3701
Begin Time: 2026 Jun 13 1332 UTC
Yesterday Maximum 2MeV Flux: 1489 pfu

maandag 15 juni 2026

12:35 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3701
Issue Time: 2026 Jun 15 1235 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3700
Begin Time: 2026 Jun 13 1332 UTC
Yesterday Maximum 2MeV Flux: 1581 pfu

zondag 14 juni 2026

13:28 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3700
Issue Time: 2026 Jun 14 1328 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3699
Begin Time: 2026 Jun 13 1332 UTC
Yesterday Maximum 2MeV Flux: 1520 pfu

08:30 UTC

Space Weather Message Code: WATA30
Serial Number: 276
Issue Time: 2026 Jun 14 0830 UTC

CANCELLED WATCH: Geomagnetic Storm Category G2 Predicted
Cancel Serial Number: 275
Original Issued Time: 2026 Jun 11 2029 UTC
G1 (Minor) geomagnetic storm conditions are no longer expected.

G1 (Minor) geomagnetic storm conditions are no longer expected.

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

zaterdag 13 juni 2026

23:56 UTC

Space Weather Message Code: WARK04
Serial Number: 5365
Issue Time: 2026 Jun 13 2356 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5364
Valid From: 2026 Jun 13 0126 UTC
Now Valid Until: 2026 Jun 14 0600 UTC
Warning Condition: Persistence




NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

21:01 UTC

Space Weather Message Code: ALTK04
Serial Number: 2666
Issue Time: 2026 Jun 13 2101 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 Jun 13 2059 UTC
Synoptic Period: 1800-2100
Active Warning: YES
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

13:33 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3699
Issue Time: 2026 Jun 13 1333 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2026 Jun 13 1332 UTC
Station: GOES-19
Comment:

01:27 UTC

Space Weather Message Code: WARK04
Serial Number: 5364
Issue Time: 2026 Jun 13 0127 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jun 13 0126 UTC
Valid To: 2026 Jun 13 2359 UTC
Warning Conditions: Onset
Comment:



NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.