Top 25 sunspot regions of 2021
On this page you will find an overview of the largest sunspot regions of the year 2021. This page is updated daily. Sunspot information comes from the NOAA SWPC.
| Region | Size | Number of sunspots | Class Magn. | Class Spot | ||
|---|---|---|---|---|---|---|
| 1 | 2021/07/01 | 2835 | 770 | 20 | EKC | |
| 2 | 2021/12/30 | 2916 | 640 | 14 | ESI | |
| 3 | 2021/09/08 | 2866 | 500 | 15 | DKC | |
| 4 | 2021/10/24 | 2887 | 440 | 14 | DKI | |
| 5 | 2021/09/29 | 2880 | 390 | 18 | DKC | |
| 6 | 2021/10/29 | 2891 | 350 | 16 | DKI | |
| 7 | 2021/08/28 | 2860 | 340 | 27 | EKI | |
| 8 | 2021/12/18 | 2907 | 310 | 24 | DKI | |
| 9 | 2021/09/21 | 2871 | 310 | 8 | DKO | |
| 10 | 2021/12/30 | 2921 | 300 | 2 | DSO | |
| 11 | 2021/12/15 | 2908 | 300 | 6 | DKO | |
| 12 | 2021/09/08 | 2868 | 300 | 17 | DHI | |
| 13 | 2021/05/27 | 2826 | 280 | 9 | DKO | |
| 14 | 2021/10/09 | 2882 | 280 | 4 | DHO | |
| 15 | 2021/12/25 | 2918 | 280 | 17 | DKI | |
| 16 | 2021/05/26 | 2824 | 250 | 5 | CSO | |
| 17 | 2021/11/29 | 2900 | 240 | 11 | DAO | |
| 18 | 2021/10/13 | 2884 | 230 | 2 | AXX | |
| 19 | 2021/09/07 | 2864 | 220 | 10 | CSO | |
| 20 | 2021/12/17 | 2909 | 210 | 6 | DSO | |
| 21 | 2021/03/18 | 2810 | 200 | 2 | HAX | |
| 22 | 2021/09/30 | 2877 | 200 | 13 | DAO | |
| 23 | 2021/02/25 | 2804 | 190 | 10 | DSI | |
| 24 | 2021/05/11 | 2822 | 190 | 9 | DAO | |
| 25 | 2021/10/19 | 2886 | 185 | 1 | HSX |
Latest news
Monday, 22 April 2024
Lot's of sunspots! Big chance for major flare activity?
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Wednesday, 20 March 2024
Sunspot region 3615, G1 watch
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Space weather facts
| Last X-flare | 2024/03/28 | X1.1 |
| Last M-flare | 2024/04/27 | M3.0 |
| Last geomagnetic storm | 2024/04/26 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2024 | 104.9 -19.8 |
| Last 30 days | 137.7 +30.3 |