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Second strongest storm, M6.6 CME analysis

We are still very much under the influence of the 21 June coronal mass ejection that arrived yesterday evening. The NOAA SWPC reported that the severe G4 geomagnetic storming threshold was reached and the Wing Kp-index even went up to Kp9 which stands for extreme G5 geomagnetic storm conditions, but the G5 reported by the Wing-Kp is questionable. The disturbance storm time index (another way of classifying geomagnetic storms where a lower number means a stronger storm) reached -195nT (for now at least) which makes this the second strongest geomagnetic storm of this solar cycle. The 2015/03/17 geomagnetic storm remains the strongest storm of this solarcycle with a Dst of -221 nT.

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Senaste X-utbrottet2026/03/30X1.5
Senaste M-utbrottet2026/04/03M1.3
Senaste geomagnetiska stormen2026/04/02Kp6- (G2)
Fläckfria dagar
Last 365 days3 dagar
20263 dagar (3%)
Senaste dag utan solfläckar2026/02/24
Månadsvis faktiskt antal solfläckar
mars 202685.9 +7.7
april 2026141 +55.1
Last 30 days94.6 +27

I dag i historien*

Solutbrott
12001X1.77
22017M8.35
31999M6.2
42001M3.57
52017M1.81
DstG
11979-168G4
21960-151G3
31992-105G2
42004-104G2
51994-103G3
*sedan 1994

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