Sunspot region AR10642
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2004/07/08 | 5 | 30 | BXO | S08E63 | |
| 2004/07/09 | 7 | 50 | CAO | S07E51 | |
| 2004/07/10 | 9 | 70 | DAO | S07E39 | |
| 2004/07/11 | 11 | 90 | DAO | S07E26 | |
| 2004/07/12 | 27 | 130 | CAO | S07E12 | |
| 2004/07/13 | 25 | 130 | DAI | S07W01 | |
| 2004/07/14 | 17 | 150 | CAI | S07W16 | |
| 2004/07/15 | 15 | 100 | DAO | S08W28 | |
| 2004/07/16 | 11 | 110 | CAO | S08W42 | |
| 2004/07/17 | 6 | 70 | CAO | S07W56 | |
| 2004/07/18 | 7 | 60 | HSX | S07W69 | |
| 2004/07/19 | 2 | 90 | HAX | S07W82 |
| B | C |
|---|---|
| 6 | 1 |
The top 7 solar flares from sunspot region 10642
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.02 | 2004/07/08 | 00:09 | 00:17 | 00:22 | |
| 2 | B6.97 | 2004/07/08 | 14:25 | 14:33 | 14:42 | |
| 3 | B5.28 | 2004/07/08 | 06:54 | 07:10 | 07:25 | |
| 4 | B3.2 | 2004/07/08 | 22:23 | 22:29 | 22:44 | |
| 5 | B3.07 | 2004/07/07 | 21:58 | 22:06 | 22:13 | |
| 6 | B2.64 | 2004/07/08 | 05:09 | 05:15 | 05:19 | |
| 7 | B1.65 | 2004/07/07 | 21:21 | 21:26 | 21:29 |
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
AR4392 (including CMEs) 99Growth of Cycle 25 986Incoming & Unnumbered Active Regions 224Current Farside Activity 418AR4397 1
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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 | 2026/03/14 | Kp6 (G2) |
| 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 | 82.4 +4.2 |
| Last 30 days | 61.1 -58.1 |