Sunspot region AR11645
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2013/01/04 | 11 | 30 | DRO | S13W05 | |
| 2013/01/05 | 8 | 50 | DAO | S13W18 | |
| 2013/01/06 | 5 | 30 | CSO | S14W32 | |
| 2013/01/07 | 4 | 10 | BXO | S13W45 | |
| 2013/01/08 | 2 | 10 | BXO | S14W58 | |
| 2013/01/09 | 5 | 30 | CRO | S14W72 | |
| 2013/01/10 | 2 | 30 | CRO | S14W85 |
| C |
|---|
| 2 |
The top 2 solar flares from sunspot region 11645
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.87 | 2013/01/05 | 16:19 | 16:22 | 16:24 | |
| 2 | C1.61 | 2013/01/07 | 00:45 | 01:02 | 01:10 |
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
Incoming & Unnumbered Active Regions 199Guess who’s back? AR4366! 2Do the high-resolution sunspot counts point to more complex sunspots? 74Solar cycle 25, solar maximum, is it over? 48Forum alert bar hidden at the bottom 5
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Space weather facts
| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/02/16 | M2.4 |
| Last geomagnetic storm | 2026/02/22 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (5%) |
| Current stretch | 4 days |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 78.9 -33.7 |
| Last 30 days | 86.6 -35.9 |