Viewing archive of Tuesday, 18 April 2023
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Solar activity report
Geophysical report
Sunspot regions
Coronal holes
Kp values
Solar flares
Radiation storms
Solar wind (Speed, Density), Interplanetary Magnetic Field (IMF) (Bt, Bz)
Coronal mass ejection arrival
A shock in the solar wind was detected today around 13:20 UTC. This could very well be the arrival of a coronal mass ejection that was launched by a filament eruption on 15 April.
Latest news
Thursday, 16 January 2025
Coronal hole faces Earth
Saturday, 4 January 2025
Sunspot region 3947, X-class solar flares
Monday, 30 December 2024
Two earth-directed coronal mass ejections
Latest forum messages
AR 13961 10101/21/2025 AR 3967 M3.3 CME 6Data loss sometimes on Ace and Dscovr 1Unexplained proton activity 47Filaments and prominences 624
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Space weather facts
| Last X-flare | 2025/01/04 | X1.85 |
| Last M-flare | 2025/01/22 | M1.3 |
| 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 | 145.2 -9.3 |
| Last 30 days | 162 +43.1 |