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Strongest geomagnetic storm since 2003, X5.8 solar flare

The geomagnetic storm that commenced yesterday will go down in the record books as the strongest geomagnetic storm since the Halloween Solar Storms of 2003. The May 2024 storms thus far peaked at a Dst of -412 nT.

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Extreme G5 geomagnetic storm

For the first time since the Halloween Solar Storms of 2003 we have now officially reached the Extreme G5 geomagnetic storm threshold at 22:54 UTC.

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Rymdvädersfakta

Senaste X-utbrottet2025/12/08X1.1
Senaste M-utbrottet2025/12/19M1.0
Senaste geomagnetiska stormen2025/12/12Kp5 (G1)
Fläckfria dagar
Senaste dag utan solfläckar2022/06/08
Månadsvis faktiskt antal solfläckar
november 202591.8 -22.8
december 2025120.8 +29
Last 30 days108.7 +19.4

I dag i historien*

Solutbrott
12014X2.69
22002M9.77
31998M2.63
42024M2.5
52013M2.32
DstG
11980-171
22015-166G3
32002-64G1
41967-64G1
51982-58G2
*sedan 1994

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