Sunspot region AR11428
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2012/03/04 | 4 | 40 | CRO | S17E51 | |
| 2012/03/05 | 6 | 70 | DSO | S17E37 | |
| 2012/03/06 | 14 | 250 | DAI | S17E21 | |
| 2012/03/07 | 17 | 250 | DAI | S16E09 | |
| 2012/03/08 | 16 | 300 | DKO | S17W05 | |
| 2012/03/09 | 8 | 180 | DAO | S17W19 | |
| 2012/03/10 | 12 | 110 | DSO | S17W32 | |
| 2012/03/11 | 14 | 60 | CRO | S17W46 | |
| 2012/03/12 | 3 | 30 | CAO | S15W60 | |
| 2012/03/13 | 1 | 30 | HSX | S15W72 |
| C | M |
|---|---|
| 3 | 1 |
The top 4 solar flares from sunspot region 11428
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.05 | 2012/03/08 | 02:49 | 02:53 | 02:56 | |
| 2 | C7.33 | 2012/03/09 | 21:45 | 21:50 | 21:56 | |
| 3 | C2.78 | 2012/03/10 | 06:53 | 07:02 | 07:06 | |
| 4 | C2.3 | 2012/03/11 | 04:26 | 04:28 | 04:32 |
Latest news
Monday, 24 March 2025
Coronal hole faces Earth
Saturday, 22 March 2025
Strong G3 geomagnetic storm watch for 23 March
Wednesday, 5 March 2025
Coronal hole faces Earth
Latest forum messages
AR4043 22Large Coronal Hole 25 173Aurora photography hints for those of us with smartphones 46Filaments and prominences 745Incoming & Unnumbered Active Regions 1647
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Latest alerts
Thursday, 27 March 2025
16:15 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 16:05 UTC
15:15 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 14:59 UTC
09:15 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 08:59 UTC
06:27 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 54GW at 07:01 UTC
06:00 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 05:51 UTC
Space weather facts
| Last X-flare | 2025/02/23 | X2.0 |
| Last M-flare | 2025/03/27 | M2.0 |
| Last geomagnetic storm | 2025/03/26 | Kp6+ (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 132.3 -22.3 |
| Last 30 days | 132.3 -20 |