Sunspot region AR11164
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2011/02/26 | 1 | 250 | HKX | N28E76 | |
| 2011/02/27 | 7 | 200 | DAO | N28E60 | |
| 2011/02/28 | 12 | 170 | ESO | N27E46 | |
| 2011/03/01 | 19 | 350 | EHC | N26E33 | |
| 2011/03/02 | 31 | 550 | EKC | N25E20 | |
| 2011/03/03 | 41 | 400 | EKC | N25E08 | |
| 2011/03/04 | 21 | 470 | EKC | N25W06 | |
| 2011/03/05 | 27 | 570 | EKC | N25W19 | |
| 2011/03/06 | 28 | 770 | FKC | N24W34 | |
| 2011/03/07 | 25 | 640 | EKC | N24W46 | |
| 2011/03/08 | 20 | 760 | EKC | N24W59 | |
| 2011/03/09 | 23 | 580 | EKC | N23W71 | |
| 2011/03/10 | 9 | 350 | DAI | N23W84 |
| B | C | M |
|---|---|---|
| 15 | 43 | 6 |
The top 10 solar flares from sunspot region 11164
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M5.29 | 2011/03/07 | 19:43 | 20:12 | 20:58 | |
| 2 | M2.57 | 2011/03/07 | 09:14 | 09:20 | 09:28 | |
| 3 | M2 | 2011/03/07 | 07:59 | 08:07 | 08:15 | |
| 4 | M1.71 | 2011/03/07 | 05:00 | 05:13 | 05:19 | |
| 5 | M1.57 | 2011/02/28 | 12:38 | 12:52 | 13:03 | |
| 6 | M1.23 | 2011/03/06 | 14:41 | 14:44 | 14:47 | |
| 7 | C9.86 | 2011/03/06 | 16:25 | 16:30 | 16:33 | |
| 8 | C8.57 | 2011/03/01 | 02:30 | 04:13 | 04:40 | |
| 9 | C8 | 2011/03/09 | 01:52 | 01:59 | 02:07 | |
| 10 | C7.71 | 2011/03/03 | 14:12 | 14:20 | 14:31 |
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Space weather facts
| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 186 +94.2 |
| Last 30 days | 106.4 +13.7 |