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Solar activity report
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Sunspot regions
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Kp values
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Solar wind (Speed, Density), Interplanetary Magnetic Field (IMF) (Bt, Bz)
X4.5 solar flare with a fast coronal mass ejection
Sunspot region 3825 which is close to the east limb and slowly rotating into an earth-facing position has produced a long-duration X4.5 class solar flare (R3-strong) today that peaked at 15:29 UTC. This is the fifth largest solar flare of the current Solar Cycle.
Latest news
Saturday, 4 January 2025
Sunspot region 3947, X-class solar flares
Monday, 30 December 2024
Two earth-directed coronal mass ejections
Sunday, 29 December 2024
Strong G3 geoamagnetic storm watch issued
Latest forum messages
AR 3947 160sun goes blank 101correcting common misconceptions about space weather 21AR13939 2025/01/04 CME 4506/01/2025 M 4.87 flare with a faint CME 1
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Space weather facts
| Last X-flare | 2025/01/04 | X1.85 |
| Last M-flare | 2025/01/06 | M4.9 |
| Last geomagnetic storm | 2025/01/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2024 | 154.5 +2 |
| January 2025 | 175.2 +20.7 |
| Last 30 days | 150.7 +26.1 |