Sunspot region AR8513
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/04/10 | 3 | 20 | BXO | S18E49 | |
| 1999/04/11 | 12 | 90 | DAO | S18E35 | |
| 1999/04/12 | 14 | 70 | DSO | S18E21 | |
| 1999/04/13 | 18 | 60 | DAO | S18E09 | |
| 1999/04/14 | 13 | 60 | DAO | S18W05 | |
| 1999/04/15 | 8 | 40 | CAO | S15W20 | |
| 1999/04/16 | 4 | 10 | BXO | S17W34 | |
| 1999/04/17 | 2 | 10 | AXX | S18W44 |
Latest news
Saturday, 22 March 2025
Strong G3 geomagnetic storm watch for 23 March
Wednesday, 5 March 2025
Coronal hole faces Earth
Sunday, 23 February 2025
X2.0 solar flare from sunspot region 4001
Latest forum messages
AR14028 2025/03/21 CME 2025/03/23 G3 Watch 124Countdown Timer? 6AR4036 5CMEs from March 16-17 and small CH 272Incoming & Unnumbered Active Regions 1636
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Space weather facts
| Last X-flare | 2025/02/23 | X2.0 |
| Last M-flare | 2025/03/21 | M1.2 |
| Last geomagnetic storm | 2025/03/22 | Kp6- (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 142 -12.6 |
| Last 30 days | 141.3 -10.4 |