Sunspot region AR12645
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2017/03/27 | 3 | 10 | BXI | S10E73 | |
| 2017/03/28 | 3 | 30 | CSO | S09E59 | |
| 2017/03/29 | 8 | 70 | DAI | S09E44 | |
| 2017/03/30 | 12 | 180 | DSI | S10E29 | |
| 2017/03/31 | 10 | 260 | DKI | S11E15 | |
| 2017/04/01 | 29 | 380 | EKC | S09E02 | |
| 2017/04/02 | 25 | 520 | EKC | S09W11 | |
| 2017/04/03 | 23 | 600 | EHC | S09W25 | |
| 2017/04/04 | 35 | 700 | EKC | S08W38 | |
| 2017/04/05 | 16 | 680 | EKC | S10W53 | |
| 2017/04/06 | 12 | 500 | FKC | S10W67 | |
| 2017/04/07 | 14 | 380 | EKC | S10W79 | |
| 2017/04/08 | 5 | 70 | CAO | S09W91 | |
| 2017/04/09 | 5 | 70 | CAO | S09W0* |
2017/03/27
2017/03/28
2017/03/29
2017/03/30
2017/03/31
2017/04/01
2017/04/02
2017/04/03
2017/04/04
2017/04/05
2017/04/06
2017/04/07
2017/04/08
|
2017/03/27
2017/03/28
2017/03/29
2017/03/30
2017/03/31
2017/04/01
2017/04/02
2017/04/03
2017/04/04
2017/04/05
2017/04/06
2017/04/07
2017/04/08
|
| A | B | C | M |
|---|---|---|---|
| 1 | 27 | 36 | 1 |
The top 10 solar flares from sunspot region 12645
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.14 | 2017/04/02 | 02:41 | 02:46 | 02:48 | |
| 2 | C7.95 | 2017/04/06 | 12:01 | 12:10 | 12:20 | |
| 3 | C7.36 | 2017/03/27 | 17:55 | 18:20 | 18:24 | |
| 4 | C7.26 | 2017/04/01 | 22:59 | 23:03 | 23:05 | |
| 5 | C7.02 | 2017/04/04 | 23:30 | 23:42 | 23:46 | |
| 6 | C6.13 | 2017/04/07 | 19:42 | 19:49 | 19:52 | |
| 7 | C5.58 | 2017/04/03 | 11:07 | 11:13 | 11:25 | |
| 8 | C5.4 | 2017/04/03 | 08:09 | 08:14 | 08:21 | |
| 9 | C4.93 | 2017/04/03 | 13:01 | 13:06 | 13:09 | |
| 10 | C4.63 | 2017/03/27 | 11:07 | 11:12 | 11:18 |
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Space weather facts
| Last X-flare | 2025/06/19 | X1.9 |
| Last M-flare | 2025/10/03 | M1.2 |
| Last geomagnetic storm | 2025/10/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| September 2025 | 129.8 -3.7 |
| October 2025 | 140.1 +10.3 |
| Last 30 days | 131.3 -1.2 |