Sunspot region AR8398
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1998/12/01 | 12 | 60 | CAO | N18W05 | |
| 1998/12/02 | 8 | 70 | CAO | N18W15 | |
| 1998/12/03 | 10 | 20 | CAO | N18W28 | |
| 1998/12/04 | 7 | 20 | BXO | N18W40 | |
| 1998/12/05 | 4 | 10 | BXO | N18W52 | |
| 1998/12/06 | 2 | 160 | CSO | N17W60 | |
| 1998/12/07 | 1 | 200 | HSX | N18W72 | |
| 1998/12/08 | 1 | 80 | HAX | N20W86 |
Latest news
Wednesday, 14 May 2025
Another X-flare! Potent sunspot region 4087!
Tuesday, 13 May 2025
X1.1 solar flare from sunspot region 4086
Tuesday, 15 April 2025
CME arrival, G3 storm watch
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Space weather facts
| Last X-flare | 2025/05/14 | X2.7 |
| Last M-flare | 2025/05/15 | M2.1 |
| Last geomagnetic storm | 2025/05/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2025 | 140.6 +6.4 |
| May 2025 | 73.4 -67.2 |
| Last 30 days | 100.7 -22.3 |