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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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Space weather facts

Last X-flare2024/06/01X1.0
Last M-flare2024/06/01M7.3
Last geomagnetic storm2024/05/17Kp6 (G2)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
April 2024136.5 +31.6
June 2024194 +57.5
Last 30 days150 +4.1

This day in history*

Solar flares
12000X1.09
22003M9.36
32000M5.9
42003M5.64
52007M3.68
ApG
1197882G3
2199160G3
3195349G2
4200338G1
5197131G1
*since 1994

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