Sunspot region AR8721
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/10/04 | 6 | 50 | CSO | S17E56 | |
| 1999/10/05 | 12 | 100 | EAO | S19E46 | |
| 1999/10/06 | 7 | 110 | EAO | S18E34 | |
| 1999/10/07 | 7 | 60 | DAO | S19E20 | |
| 1999/10/08 | 6 | 70 | DSO | S19E05 | |
| 1999/10/09 | 3 | 40 | CAO | S17W12 | |
| 1999/10/10 | 7 | 30 | CSO | S17W24 | |
| 1999/10/11 | 2 | 10 | HRX | S17W37 | |
| 1999/10/12 | 1 | 10 | HRX | S16W50 | |
| 1999/10/13 | 1 | 0 | AXX | S15W64 |
Latest news
Sunday, 1 February 2026
Complex sunspot region 4366
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Sunday, 18 January 2026
X1.9 solar flare with earth-directed CME
Latest forum messages
AR4366 724X8 CME 13Space Weather Memes 784Do the high-resolution sunspot counts point to more complex sunspots? 48X1.9 CME 1365
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Space weather facts
| Last X-flare | 2026/02/03 | X1.5 |
| Last M-flare | 2026/02/03 | M2.5 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| February 2026 | 114 -10 |
| Last 30 days | 118.8 +9.2 |