Sunspot region AR13991
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2025/02/11 | 1 | 30 | HSX | S12E70 | |
| 2025/02/12 | 3 | 30 | CSO | S12E56 | |
| 2025/02/13 | 2 | 20 | HRX | S12E44 | |
| 2025/02/14 | 1 | 20 | HRX | S12E30 | |
| 2025/02/15 | 2 | 10 | AXX | S12E17 | |
| 2025/02/16 | 6 | 20 | CRO | S13E03 | |
| 2025/02/17 | 1 | 10 | AXX | S13W11 | |
| 2025/02/18 | 1 | 10 | AXX | S14W24 | |
| 2025/02/22 | 2 | 10 | AXX | S13W78 | |
| 2025/02/23 | 3 | 10 | CRO | S13W92 | |
| 2025/02/24 | 3 | 10 | CRO | S09W99 |
2025/02/11
2025/02/12
2025/02/13
2025/02/14
2025/02/15
2025/02/16
2025/02/17
2025/02/18
2025/02/22
2025/02/23
2025/02/24
|
2025/02/11
2025/02/12
2025/02/13
2025/02/14
2025/02/15
2025/02/16
2025/02/17
2025/02/18
2025/02/22
2025/02/23
2025/02/24
|
| C |
|---|
| 2 |
The top 2 solar flares from sunspot region 13991
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C8.0 | 2025/02/19 | 23:23 | 23:45 | 23:59 | |
| 2 | C7.2 | 2025/02/11 | 18:05 | 18:25 | 18:43 |
Latest news
Wednesday, 13 May 2026
Coronal hole faces Earth
Monday, 30 March 2026
X1.5 solar flare
Tuesday, 17 March 2026
M2.7 solar flare, CME arrival possible
Latest forum messages
AR4436 229Current Farside Activity 614Unspecified geomagnetic activity 284Incoming & Unnumbered Active Regions 440Forum messages 18
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2026/04/24 | X2.5 |
| Last M-flare | 2026/05/29 | M1.1 |
| Last geomagnetic storm | 2026/05/16 | Kp6- (G2) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (2%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2026 | 79.3 -6.6 |
| May 2026 | 99.1 +19.8 |
| Last 30 days | 99.1 +7.5 |
This day in history*
Aurora on this day in history
No observations submitted for this day in history. If you've observed the aurora and you have some amazing photos to show off, submit your observations now!
Submit your aurora observation