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S2 solar raditation storm, Earth-directed CME
Solar protons reached the moderate S2 threshold today for the second time this solar cycle. Moderate S2 solar radiation storms will cause problems with HF radio communications at polar latitudes and have a minor impact on some types of satellite services, This is all due to the highly eruptive M4.1 solar flare from the west limb which peaked at 15:58 UTC yesterday. This solar flare launched an impressive coronal mass ejection but it is not aimed at Earth.
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Saturday, 14 September 2024
X4.5 solar flare with a fast coronal mass ejection
Thursday, 12 September 2024
G3 geomagnetic storm watch due to CME passage
Monday, 12 August 2024
Severe G4 geomagnetic storm
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Space weather facts
| Last X-flare | 2024/09/14 | X4.54 |
| Last M-flare | 2024/09/14 | M3.0 |
| Last geomagnetic storm | 2024/09/17 | Kp8- (G4) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| August 2024 | 215.5 +19 |
| September 2024 | 147.6 -68 |
| Last 30 days | 154.6 -57.2 |