Sunspot region AR11305
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2011/09/26 | 1 | 60 | HSX | N12E70 | |
| 2011/09/27 | 2 | 80 | CSO | N13E58 | |
| 2011/09/28 | 1 | 80 | HSX | N12E41 | |
| 2011/09/29 | 5 | 60 | HSX | N12E28 | |
| 2011/09/30 | 8 | 100 | CSO | N13E16 | |
| 2011/10/01 | 9 | 130 | DSO | N12E01 | |
| 2011/10/02 | 14 | 170 | DSO | N12W12 | |
| 2011/10/03 | 9 | 190 | DSI | N12W26 | |
| 2011/10/04 | 10 | 250 | CHI | N11W36 | |
| 2011/10/05 | 10 | 190 | CSI | N11W49 | |
| 2011/10/06 | 4 | 250 | CHO | N10W65 | |
| 2011/10/07 | 3 | 220 | CSO | N12W80 | |
| 2011/10/08 | 1 | 180 | HSX | N11W91 |
| C | M |
|---|---|
| 6 | 5 |
The top 10 solar flares from sunspot region 11305
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M5.64 | 2011/10/02 | 00:37 | 00:50 | 00:59 | |
| 2 | M1.83 | 2011/10/01 | 08:56 | 09:59 | 10:17 | |
| 3 | M1.46 | 2011/09/30 | 18:55 | 19:06 | 19:15 | |
| 4 | M1.11 | 2011/09/30 | 03:37 | 04:00 | 04:13 | |
| 5 | M1.09 | 2011/10/02 | 21:20 | 21:49 | 22:05 | |
| 6 | C1.95 | 2011/10/01 | 03:50 | 03:56 | 04:04 | |
| 7 | C1.93 | 2011/09/29 | 10:19 | 10:23 | 10:25 | |
| 8 | C1.74 | 2011/10/06 | 22:06 | 22:10 | 22:13 | |
| 9 | C1.42 | 2011/10/07 | 00:42 | 00:47 | 00:49 | |
| 10 | C1.25 | 2011/10/06 | 23:31 | 23:37 | 23:39 |
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 977Do the high-resolution sunspot counts point to more complex sunspots? 51Feb 8-9 CMEs 12AR 4371 19AR 4373 3
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Space weather facts
| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/05 | M1.1 |
| Last geomagnetic storm | 2026/02/05 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 137.7 +25.1 |
| Last 30 days | 126 +20.7 |