Sunspot region AR10663
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2004/08/20 | 2 | 110 | HAX | N08E75 | |
| 2004/08/21 | 7 | 230 | DAO | N10E67 | |
| 2004/08/22 | 9 | 200 | EAO | N11E52 | |
| 2004/08/23 | 14 | 180 | ESO | N11E39 | |
| 2004/08/24 | 17 | 150 | ESO | N11E26 | |
| 2004/08/25 | 5 | 100 | CSO | N10E12 | |
| 2004/08/26 | 16 | 140 | ESO | N10W01 | |
| 2004/08/27 | 16 | 120 | CAO | N10W14 | |
| 2004/08/28 | 12 | 80 | EAO | N10W27 | |
| 2004/08/29 | 7 | 80 | ESO | N10W41 | |
| 2004/08/30 | 4 | 40 | CAO | N07W58 | |
| 2004/08/31 | 9 | 140 | DAO | N04W73 | |
| 2004/09/01 | 1 | 50 | HAX | N03W88 |
| B | C | M |
|---|---|---|
| 9 | 4 | 1 |
The top 10 solar flares from sunspot region 10663
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M2.04 | 2004/08/31 | 05:24 | 05:38 | 05:47 | |
| 2 | C3.48 | 2004/08/30 | 03:04 | 03:11 | 03:18 | |
| 3 | C2.68 | 2004/08/26 | 02:08 | 02:19 | 02:30 | |
| 4 | C1.46 | 2004/08/30 | 18:06 | 18:18 | 18:29 | |
| 5 | C1.33 | 2004/08/31 | 00:40 | 00:46 | 00:52 | |
| 6 | B9.8 | 2004/08/23 | 02:18 | 02:27 | 02:35 | |
| 7 | B8.76 | 2004/08/23 | 19:29 | 19:36 | 19:47 | |
| 8 | B7.97 | 2004/08/31 | 14:07 | 14:15 | 14:20 | |
| 9 | B6.88 | 2004/08/30 | 14:58 | 15:02 | 15:04 | |
| 10 | B3.78 | 2004/08/30 | 09:54 | 10:00 | 10:10 |
Latest news
Monday, 30 March 2026
X1.5 solar flare
Tuesday, 17 March 2026
M2.7 solar flare, CME arrival possible
Sunday, 1 February 2026
Complex sunspot region 4366
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Space weather facts
| Last X-flare | 2026/03/30 | X1.5 |
| Last M-flare | 2026/04/09 | M1.0 |
| Last geomagnetic storm | 2026/04/20 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2026 | 85.9 +7.7 |
| April 2026 | 78.7 -7.2 |
| Last 30 days | 91.5 +25.1 |
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