Sunspot region AR10421
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2003/07/28 | 1 | 30 | HAX | S08E77 | |
| 2003/07/29 | 5 | 280 | EAO | S08E67 | |
| 2003/07/30 | 13 | 310 | EAO | S08E54 | |
| 2003/07/31 | 15 | 230 | EAI | S08E41 | |
| 2003/08/01 | 17 | 230 | EAO | S08E28 | |
| 2003/08/02 | 25 | 260 | FKI | S08E15 | |
| 2003/08/03 | 19 | 180 | EAO | S08E01 | |
| 2003/08/04 | 26 | 170 | EAO | S08W14 | |
| 2003/08/05 | 10 | 130 | DSO | S07W30 | |
| 2003/08/06 | 4 | 100 | CSO | S07W43 | |
| 2003/08/07 | 5 | 110 | CAO | S07W58 | |
| 2003/08/08 | 1 | 60 | HSX | S07W72 | |
| 2003/08/09 | 1 | 60 | HSX | S07W84 |
| B | C | M |
|---|---|---|
| 4 | 6 | 1 |
The top 10 solar flares from sunspot region 10421
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.89 | 2003/07/29 | 01:28 | 01:39 | 01:43 | |
| 2 | C5.03 | 2003/08/05 | 09:07 | 09:14 | 09:23 | |
| 3 | C1.75 | 2003/07/28 | 11:07 | 11:12 | 11:14 | |
| 4 | C1.47 | 2003/07/29 | 05:32 | 05:48 | 05:50 | |
| 5 | C1.31 | 2003/07/30 | 09:52 | 10:14 | 10:24 | |
| 6 | C1.15 | 2003/08/07 | 17:00 | 17:06 | 17:23 | |
| 7 | C1.02 | 2003/07/26 | 18:41 | 18:46 | 18:49 | |
| 8 | B9.6 | 2003/07/27 | 22:25 | 22:32 | 22:41 | |
| 9 | B7.14 | 2003/07/28 | 05:13 | 05:20 | 05:35 | |
| 10 | B5.73 | 2003/07/29 | 14:49 | 14:54 | 14:59 |
Latest news
Monday, 30 March 2026
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Space weather facts
| Last X-flare | 2026/03/30 | X1.5 |
| Last M-flare | 2026/04/04 | M1.0 |
| Last geomagnetic storm | 2026/04/03 | Kp7- (G3) |
| 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 | 118.8 +32.8 |
| Last 30 days | 102.1 +47 |
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