NOAA SWPC pranešimai, stebėjimai ir įspėjimai

Nacionalinis vandenynų ir atmosferos administracijos kosminių orų prognozių centras (NOAA SWPC) yra oficiali JAV kosmoso orų vyriausybės agentūra, teikianti pranešimus, stebėjimus ir įspėjimus apie kosmoso orų suaktyvėjimus. Žemiau rasite naujausius NOAA SWPC paskelbtus kosminius orų pranešimus, stebėjimus ir įspėjimus.

pirmadienis, birželio 15. 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

sekmadienis, birželio 14. 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.

šeštadienis, birželio 13. 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.

ketvirtadienis, birželio 11. 2026

20:40 UTC

Space Weather Message Code: ALTK05
Serial Number: 2027
Issue Time: 2026 Jun 11 2040 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jun 11 2040 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.

20:29 UTC

Space Weather Message Code: WATA30
Serial Number: 275
Issue Time: 2026 Jun 11 2029 UTC

WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Jun 12: G1 (Minor) Jun 13: G2 (Moderate) Jun 14: 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 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.

20:15 UTC

Space Weather Message Code: WARK05
Serial Number: 2241
Issue Time: 2026 Jun 11 2015 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Jun 11 2014 UTC
Valid To: 2026 Jun 12 0300 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.

18:57 UTC

Space Weather Message Code: ALTK04
Serial Number: 2665
Issue Time: 2026 Jun 11 1857 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 Jun 11 1855 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.

18:49 UTC

Space Weather Message Code: WARK04
Serial Number: 5363
Issue Time: 2026 Jun 11 1849 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jun 11 1849 UTC
Valid To: 2026 Jun 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.

00:40 UTC

Space Weather Message Code: ALTTP4
Serial Number: 711
Issue Time: 2026 Jun 11 0040 UTC

ALERT: Type IV Radio Emission
Begin Time: 2026 Jun 11 0028 UTC
Comment:

00:40 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1503
Issue Time: 2026 Jun 11 0040 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 11 0013 UTC
Estimate Velocity: 918 km/s
Comment:

trečiadienis, birželio 10. 2026

17:38 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1502
Issue Time: 2026 Jun 10 1738 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 10 1715 UTC
Estimate Velocity: 1127 km/s
Comment:

antradienis, birželio 9. 2026

20:22 UTC

Space Weather Message Code: WARK04
Serial Number: 5362
Issue Time: 2026 Jun 09 2022 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jun 09 2020 UTC
Valid To: 2026 Jun 09 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.

16:29 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1501
Issue Time: 2026 Jun 09 1629 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 09 1557 UTC
Estimate Velocity: 917 km/s
Comment: SVI: 482 km/s; SAG: 917 km/s (closer station to the subsolar point. Report came later)

SVI: 482 km/s; SAG: 917 km/s (closer station to the subsolar point. Report came later)

16:25 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1501
Issue Time: 2026 Jun 09 1625 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 09 1557 UTC
Estimate Velocity: 482 km/s
Comment:

16:24 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1500
Issue Time: 2026 Jun 09 1624 UTC

CANCELLED ALERT: Type II Radio Emission
Cancel Serial Number: 1499
Original Issued Time: 2026 Jun 09 1624 UTC
duplicated

duplicated

16:24 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1499
Issue Time: 2026 Jun 09 1624 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 09 1557 UTC
Estimate Velocity: 482 km/s
Comment:

16:24 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1499
Issue Time: 2026 Jun 09 1624 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 09 1557 UTC
Estimate Velocity: 482 km/s
Comment:

11:41 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3698
Issue Time: 2026 Jun 09 1141 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3697
Begin Time: 2026 Jun 07 1143 UTC
Yesterday Maximum 2MeV Flux: 1315 pfu

pirmadienis, birželio 8. 2026

21:17 UTC

Space Weather Message Code: WATA50
Serial Number: 100
Issue Time: 2026 Jun 08 2117 UTC

CANCELLED WATCH: Geomagnetic Storm Category G3 Predicted
Cancel Serial Number: 99
Original Issued Time: 2026 Jun 06 2211 UTC
Due to current conditions no longer reflecting CME influence, the G3 Watch for 08 Jun and the G2 Watch for 09 Jun are cancelled.

Due to current conditions no longer reflecting CME influence, the G3 Watch for 08 Jun and the G2 Watch for 09 Jun are cancelled.

05:16 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3697
Issue Time: 2026 Jun 08 0516 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3696
Begin Time: 2026 Jun 07 1143 UTC
Yesterday Maximum 2MeV Flux: 2874 pfu

sekmadienis, birželio 7. 2026

11:46 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3696
Issue Time: 2026 Jun 07 1146 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2026 Jun 07 1143 UTC
Station: GOES-18
Comment: Yesterday's max: 1284 pfu

Yesterday's max: 1284 pfu

šeštadienis, birželio 6. 2026

22:11 UTC

Space Weather Message Code: WATA50
Serial Number: 99
Issue Time: 2026 Jun 06 2211 UTC

WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day:
Jun 07: None (Below G1) Jun 08: G3 (Strong) Jun 09: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment:

16:55 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3695
Issue Time: 2026 Jun 06 1655 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2026 Jun 06 1640 UTC
Station: GOES-19
Comment: Yesterday's max: 536 pfu

Yesterday's max: 536 pfu

14:15 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1498
Issue Time: 2026 Jun 06 1415 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 06 1347 UTC
Estimate Velocity: 838 km/s
Comment:

14:14 UTC

Space Weather Message Code: SUM10R
Serial Number: 918
Issue Time: 2026 Jun 06 1414 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2026 Jun 06 1344 UTC
Maximum Time: 2026 Jun 06 1344 UTC
End Time: 2026 Jun 06 1359 UTC
Peak Flux: 190 sfu
Duration: 5 minutes
Latest Penticton Noon Flux: 141 sfu
Comment:

04:35 UTC

Space Weather Message Code: WARK04
Serial Number: 5361
Issue Time: 2026 Jun 06 0435 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5360
Valid From: 2026 Jun 05 0434 UTC
Now Valid Until: 2026 Jun 06 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.

04:35 UTC

Space Weather Message Code: WARK05
Serial Number: 2240
Issue Time: 2026 Jun 06 0435 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2239
Valid From: 2026 Jun 05 1228 UTC
Now Valid Until: 2026 Jun 06 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.

penktadienis, birželio 5. 2026

23:25 UTC

Space Weather Message Code: ALTK05
Serial Number: 2026
Issue Time: 2026 Jun 05 2325 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jun 05 2324 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.

20:09 UTC

Space Weather Message Code: ALTK05
Serial Number: 2025
Issue Time: 2026 Jun 05 2009 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jun 05 2002 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.

18:54 UTC

Space Weather Message Code: WARK04
Serial Number: 5360
Issue Time: 2026 Jun 05 1854 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5359
Valid From: 2026 Jun 05 0434 UTC
Now Valid Until: 2026 Jun 06 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.

18:52 UTC

Space Weather Message Code: WATA30
Serial Number: 274
Issue Time: 2026 Jun 05 1852 UTC

WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Jun 06: G2 (Moderate) Jun 07: None (Below G1) Jun 08: 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 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.

17:21 UTC

Space Weather Message Code: WARK06
Serial Number: 662
Issue Time: 2026 Jun 05 1721 UTC

EXTENDED WARNING: Geomagnetic K-index of 6 expected
Extension to Serial Number: 661
Valid From: 2026 Jun 05 1437 UTC
Now Valid Until: 2026 Jun 06 0300 UTC
Warning Condition: Persistence

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.

17:19 UTC

Space Weather Message Code: WARK05
Serial Number: 2239
Issue Time: 2026 Jun 05 1719 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2238
Valid From: 2026 Jun 05 1228 UTC
Now Valid Until: 2026 Jun 06 0600 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.

17:16 UTC

Space Weather Message Code: WARK07
Serial Number: 150
Issue Time: 2026 Jun 05 1716 UTC

WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2026 Jun 05 1714 UTC
Valid To: 2026 Jun 05 2359 UTC
Warning Conditions: Onset
Noaa Scale: G3 - Greater
Comment:

NOAA Scale: G3 - Greater

16:39 UTC

Space Weather Message Code: ALTK06
Serial Number: 718
Issue Time: 2026 Jun 05 1639 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2026 Jun 05 1638 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.

16:21 UTC

Space Weather Message Code: ALTK05
Serial Number: 2024
Issue Time: 2026 Jun 05 1621 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jun 05 1620 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.

14:41 UTC

Space Weather Message Code: WARK06
Serial Number: 661
Issue Time: 2026 Jun 05 1441 UTC

WARNING: Geomagnetic K-index of 6 expected
Valid From: 2026 Jun 05 1437 UTC
Valid To: 2026 Jun 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.

13:35 UTC

Space Weather Message Code: ALTK05
Serial Number: 2023
Issue Time: 2026 Jun 05 1335 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2026 Jun 05 1327 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.

12:58 UTC

Space Weather Message Code: ALTK04
Serial Number: 2664
Issue Time: 2026 Jun 05 1258 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 Jun 05 1253 UTC
Synoptic Period: 1200-1500
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.

12:30 UTC

Space Weather Message Code: WARK05
Serial Number: 2238
Issue Time: 2026 Jun 05 1230 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2026 Jun 05 1228 UTC
Valid To: 2026 Jun 05 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.

05:13 UTC

Space Weather Message Code: SUMSUD
Serial Number: 300
Issue Time: 2026 Jun 05 0513 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2026 Jun 05 0511 UTC
Deviation: 70 nT
Station: MEA
Comment:

04:35 UTC

Space Weather Message Code: WARK04
Serial Number: 5359
Issue Time: 2026 Jun 05 0435 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jun 05 0434 UTC
Valid To: 2026 Jun 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.

04:33 UTC

Space Weather Message Code: WARSUD
Serial Number: 255
Issue Time: 2026 Jun 05 0433 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2026 Jun 05 0450 UTC
Valid To: 2026 Jun 05 1515 UTC
Ip Shock: 2026-06-05 04:31
Comment:

trečiadienis, birželio 3. 2026

22:38 UTC

Space Weather Message Code: WARK04
Serial Number: 5358
Issue Time: 2026 Jun 03 2238 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jun 03 2237 UTC
Valid To: 2026 Jun 04 0600 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.

14:52 UTC

Space Weather Message Code: WATA50
Serial Number: 98
Issue Time: 2026 Jun 03 1452 UTC

WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day:
Jun 04: G3 (Strong) Jun 05: G3 (Strong) Jun 06: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment:

11:59 UTC

Space Weather Message Code: SUMX01
Serial Number: 218
Issue Time: 2026 Jun 03 1159 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2026 Jun 03 1119 UTC
Maximum Time: 2026 Jun 03 1128 UTC
End Time: 2026 Jun 03 1135 UTC
Xray Class: X1.0
Optical Class:
Location: N17W19
Noaa Scale: R3 - Strong
Comment: GOES-18 outage so using GOES-19

GOES-18 outage so using GOES-19NOAA 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.

11:47 UTC

Space Weather Message Code: SUM10R
Serial Number: 917
Issue Time: 2026 Jun 03 1147 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2026 Jun 03 1121 UTC
Maximum Time: 2026 Jun 03 1122 UTC
End Time: 2026 Jun 04 1123 UTC
Peak Flux: 250 sfu
Duration: 2 minutes
Latest Penticton Noon Flux: 146 sfu
Comment:

11:41 UTC

Space Weather Message Code: ALTXMF
Serial Number: 531
Issue Time: 2026 Jun 03 1141 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026 Jun 03 1141 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.

07:29 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1497
Issue Time: 2026 Jun 03 0729 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 03 0657 UTC
Estimate Velocity: 313 km/s
Comment:

07:17 UTC

Space Weather Message Code: SUM10R
Serial Number: 916
Issue Time: 2026 Jun 03 0717 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2026 Jun 03 0657 UTC
Maximum Time: 2026 Jun 03 0657 UTC
End Time: 2026 Jun 03 0700 UTC
Peak Flux: 540 sfu
Duration: 3 minutes
Latest Penticton Noon Flux: 146 sfu
Comment: Castelli-U signature. Corrected duration.

Castelli-U signature. Corrected duration.

07:15 UTC

Space Weather Message Code: SUMXM5
Serial Number: 318
Issue Time: 2026 Jun 03 0715 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2026 Jun 03 0648 UTC
Maximum Time: 2026 Jun 03 0700 UTC
End Time: 2026 Jun 03 0707 UTC
Xray Class: M7.7
Optical Class: 2B
Location: N08W14
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.

07:10 UTC

Space Weather Message Code: SUM10R
Serial Number: 916
Issue Time: 2026 Jun 03 0710 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2026 Jun 03 0657 UTC
Maximum Time: 2026 Jun 03 0657 UTC
End Time: 2026 Jun 03 0658 UTC
Peak Flux: 540 sfu
Duration: 1 minutes
Latest Penticton Noon Flux: 146 sfu
Comment: Castelli-U signature

Castelli-U signature

07:00 UTC

Space Weather Message Code: ALTXMF
Serial Number: 530
Issue Time: 2026 Jun 03 0700 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026 Jun 03 0700 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.

02:15 UTC

Space Weather Message Code: SUM10R
Serial Number: 915
Issue Time: 2026 Jun 03 0215 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2026 Jun 03 0126 UTC
Maximum Time: 2026 Jun 03 0130 UTC
End Time: 2026 Jun 04 0131 UTC
Peak Flux: 360 sfu
Duration: 5 minutes
Latest Penticton Noon Flux: 146 sfu
Comment:

01:56 UTC

Space Weather Message Code: SUMXM5
Serial Number: 317
Issue Time: 2026 Jun 03 0156 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2026 Jun 03 0122 UTC
Maximum Time: 2026 Jun 03 0136 UTC
End Time: 2026 Jun 04 0143 UTC
Xray Class: M9.3
Optical Class: sf
Location: N13W05
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.

01:43 UTC

Space Weather Message Code: ALTTP4
Serial Number: 710
Issue Time: 2026 Jun 03 0143 UTC

ALERT: Type IV Radio Emission
Begin Time: 2026 Jun 03 0122 UTC
Comment:

01:42 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1496
Issue Time: 2026 Jun 03 0142 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 03 0057 UTC
Estimate Velocity: 253 km/s
Comment:

01:37 UTC

Space Weather Message Code: ALTXMF
Serial Number: 529
Issue Time: 2026 Jun 03 0137 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2026 Jun 03 0131 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.

antradienis, birželio 2. 2026

17:18 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1495
Issue Time: 2026 Jun 02 1718 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 Jun 02 1652 UTC
Estimate Velocity: 631 km/s
Comment: Uncertain if the sweep was associated with a limb event or an M3 solar flare that occurred at similar times.

Uncertain if the sweep was associated with a limb event or an M3 solar flare that occurred at similar times.

16:57 UTC

Space Weather Message Code: SUM10R
Serial Number: 914
Issue Time: 2026 Jun 02 1657 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2026 Jun 02 1642 UTC
Maximum Time: 2026 Jun 02 1642 UTC
End Time: 2026 Jun 02 1643 UTC
Peak Flux: 150 sfu
Duration: 1 minutes
Latest Penticton Noon Flux: 137 sfu
Comment: COR for end date. Event only lasted 1 minute.

COR for end date. Event only lasted 1 minute.

16:54 UTC

Space Weather Message Code: SUM10R
Serial Number: 914
Issue Time: 2026 Jun 02 1654 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2026 Jun 02 1642 UTC
Maximum Time: 2026 Jun 02 1642 UTC
End Time: 2026 Jun 03 1643 UTC
Peak Flux: 150 sfu
Duration: 1 minutes
Latest Penticton Noon Flux: 137 sfu
Comment:

pirmadienis, birželio 1. 2026

17:54 UTC

Space Weather Message Code: WARK04
Serial Number: 5357
Issue Time: 2026 Jun 01 1754 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jun 01 1753 UTC
Valid To: 2026 Jun 02 0000 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.

šeštadienis, gegužės 30. 2026

20:36 UTC

Space Weather Message Code: ALTK04
Serial Number: 2663
Issue Time: 2026 May 30 2036 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 May 30 2035 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.

18:52 UTC

Space Weather Message Code: WARK04
Serial Number: 5356
Issue Time: 2026 May 30 1852 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 May 30 1851 UTC
Valid To: 2026 May 31 0600 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.

penktadienis, gegužės 29. 2026

19:52 UTC

Space Weather Message Code: ALTK04
Serial Number: 2662
Issue Time: 2026 May 29 1952 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 May 29 1949 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.

19:32 UTC

Space Weather Message Code: WARK04
Serial Number: 5355
Issue Time: 2026 May 29 1932 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 May 29 1932 UTC
Valid To: 2026 May 30 0900 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.

05:41 UTC

Space Weather Message Code: WARK04
Serial Number: 5354
Issue Time: 2026 May 29 0541 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5353
Valid From: 2026 May 27 2347 UTC
Now Valid Until: 2026 May 29 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.

00:11 UTC

Space Weather Message Code: WARK04
Serial Number: 5353
Issue Time: 2026 May 29 0011 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5352
Valid From: 2026 May 27 2347 UTC
Now Valid Until: 2026 May 29 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.

ketvirtadienis, gegužės 28. 2026

18:00 UTC

Space Weather Message Code: ALTK04
Serial Number: 2661
Issue Time: 2026 May 28 1800 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 May 28 1800 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.

17:17 UTC

Space Weather Message Code: ALTK04
Serial Number: 2660
Issue Time: 2026 May 28 1717 UTC

CANCELLED ALERT: Geomagnetic K-index of 4
Cancel Serial Number: 2659
Original Issued Time: 2026-05-28T17:06:00
Cancelled 2026-05-28 17:17 by Forecaster User Incorrectly issued. Did not reach threshold.

Cancelled 2026-05-28 17:17 by Forecaster User Incorrectly issued. Did not reach threshold.

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.

17:06 UTC

Space Weather Message Code: ALTK04
Serial Number: 2659
Issue Time: 2026 May 28 1706 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 May 28 1706 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.

17:02 UTC

Space Weather Message Code: WARK04
Serial Number: 5352
Issue Time: 2026 May 28 1702 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5351
Valid From: 2026-05-27T23:47:00
Now Valid Until: 2026-05-29 03:00
Warning Condition: Persistence
Extended 2026-05-28 17:01 by Forecaster User

Extended 2026-05-28 17:01 by Forecaster User

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.

11:45 UTC

Space Weather Message Code: WARK04
Serial Number: 5351
Issue Time: 2026 May 28 1145 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5350
Valid From: 2026-05-27T23:47:00
Now Valid Until: 2026-05-28 18:00
Warning Condition: Persistence
Extended 2026-05-28 11:44 by Forecaster User

Extended 2026-05-28 11:44 by Forecaster User

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.

05:17 UTC

Space Weather Message Code: WARK04
Serial Number: 5350
Issue Time: 2026 May 28 0517 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5349
Valid From: 2026-05-27T23:47:00
Now Valid Until: 2026-05-28 12:00
Warning Condition: Persistence
Extended 2026-05-28 05:16 by Forecaster User

Extended 2026-05-28 05:16 by Forecaster User

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.

trečiadienis, gegužės 27. 2026

23:47 UTC

Space Weather Message Code: WARK04
Serial Number: 5349
Issue Time: 2026 May 27 2347 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 May 27 2347 UTC
Valid To: 2026 May 28 0600 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.

14:45 UTC

Space Weather Message Code: SUMPX1
Serial Number: 131
Issue Time: 2026 May 27 1445 UTC

CANCELLED SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
Cancel Serial Number: 130
Original Issued Time: 2026-05-27T02:28:00
Cancelled 2026-05-27 14:44 by Forecaster User duplicate

Cancelled 2026-05-27 14:44 by Forecaster User duplicateNOAA Scale: S1 - Minor

05:47 UTC

Space Weather Message Code: WARK04
Serial Number: 5348
Issue Time: 2026 May 27 0547 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5347
Valid From: 2026-05-26T21:37:00
Now Valid Until: 2026-05-27 12:00
Warning Condition: Persistence
Extended 2026-05-27 05:47 by Forecaster User

Extended 2026-05-27 05:47 by Forecaster User

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.

02:28 UTC

Space Weather Message Code: SUMPX1
Serial Number: 130
Issue Time: 2026 May 27 0228 UTC

SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2026 May 27 0015 UTC
Maximum Time: 2026 May 26 0110 UTC
End Time: 2026 May 26 0425 UTC
Maximum 10MeV Flux: 23 pfu
Noaa Scale: S1 - Minor
Comment:

NOAA Scale: S1 - Minor

02:27 UTC

Space Weather Message Code: SUMPX1
Serial Number: 129
Issue Time: 2026 May 27 0227 UTC

SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2026 May 26 0015 UTC
Maximum Time: 2026 May 26 0110 UTC
End Time: 2026 May 26 0425 UTC
Maximum 10MeV Flux: 23 pfu
Noaa Scale: S1 - Minor
Comment:

NOAA Scale: S1 - Minor

00:01 UTC

Space Weather Message Code: ALTK04
Serial Number: 2658
Issue Time: 2026 May 27 0001 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2026 May 26 2359 UTC
Synoptic Period: 2100-2400
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.

antradienis, gegužės 26. 2026

21:38 UTC

Space Weather Message Code: WARK04
Serial Number: 5347
Issue Time: 2026 May 26 2138 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 May 26 2137 UTC
Valid To: 2026 May 27 0600 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.

14:22 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1494
Issue Time: 2026 May 26 1422 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 May 26 1244 UTC
Estimate Velocity: 650 km/s
Comment: SVI; updated with correct start time

SVI; updated with correct start time

14:20 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1494
Issue Time: 2026 May 26 1420 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 May 26 1420 UTC
Estimate Velocity: 650 km/s
Comment: SVI

SVI

14:19 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1493
Issue Time: 2026 May 26 1419 UTC

CANCELLED ALERT: Type II Radio Emission
Cancel Serial Number: 1490
Original Issued Time: 2026-05-26T14:19:00
Cancelled 2026-05-26 14:19 by Forecaster User Duplicate.

Cancelled 2026-05-26 14:19 by Forecaster User Duplicate.

14:19 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1492
Issue Time: 2026 May 26 1419 UTC

CANCELLED ALERT: Type II Radio Emission
Cancel Serial Number: 1491
Original Issued Time: 2026-05-26T14:19:00
Cancelled 2026-05-26 14:19 by Forecaster User Duplicate.

Cancelled 2026-05-26 14:19 by Forecaster User Duplicate.

14:19 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1491
Issue Time: 2026 May 26 1419 UTC

ALERT: Type II Radio Emission
Begin Time: 2026 May 26 1244 UTC
Estimate Velocity: 650 km/s
Comment: SVI

SVI