Sunspot region AR11303
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2011/09/25 | 1 | 30 | CSI | S28W66 | |
| 2011/09/26 | 6 | 70 | CSO | S28W78 | |
| 2011/09/27 | 1 | 60 | HSX | S28W90 |
| M |
|---|
| 5 |
The top 5 solar flares from sunspot region 11303
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M2.21 | 2011/09/25 | 09:25 | 09:35 | 09:53 | |
| 2 | M1.83 | 2011/09/24 | 21:23 | 21:27 | 21:32 | |
| 3 | M1.5 | 2011/09/24 | 23:45 | 23:58 | 00:09 | |
| 4 | M1.37 | 2011/09/26 | 01:39 | 01:47 | 01:57 | |
| 5 | M1.24 | 2011/09/25 | 22:29 | 22:32 | 22:36 |
Latest news
Tuesday, 17 March 2026
M2.7 solar flare, CME arrival possible
Sunday, 1 February 2026
Complex sunspot region 4366
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Latest forum messages
CMes from ar 4392 (19-21st of march) 164Current Farside Activity 424What, no CH/HSS thread? 57Incoming & Unnumbered Active Regions 228An interesting article about the suns dynamo 2
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Space weather facts
| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/03/18 | M2.7 |
| Last geomagnetic storm | 2026/03/20 | Kp7- (G3) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (4%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| March 2026 | 77.5 -0.7 |
| Last 30 days | 63.5 -42.2 |