Solar Flare WatchSolar flares in 2021
C443
M29
X1
LargestX1.52021-07-03
M/X flares by month
- January 2021
- February 2021
- March 2021
- April 2021
- May 2021
- June 2021
- July 2021
- August 2021
- September 2021
- October 2021
- November 2021
- December 2021
Nearby years (M + X)
16
54
1
3
2
30
200
364
914
350
222
Top 20 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2021-07-03 | 14:18 | 14:29 | 15 | X1.5 | – | – |
| 2021-10-28 | 15:17 | 15:35 | 30 | M9.9 | – | – |
| 2021-08-28 | 05:39 | 06:11 | 43 | M4.7 | – | – |
| 2021-05-07 | 18:43 | 19:04 | 35 | M3.9 | – | – |
| 2021-07-03 | 07:04 | 07:17 | 17 | M2.7 | – | – |
| 2021-10-28 | 10:19 | 10:28 | 17 | M2.2 | – | – |
| 2021-11-09 | 15:48 | 17:02 | 108 | M2.0 | – | – |
| 2021-09-23 | 15:23 | 15:28 | 15 | M1.8 | – | – |
| 2021-12-20 | 11:12 | 11:36 | 42 | M1.8 | – | – |
| 2021-12-28 | 03:50 | 04:01 | 19 | M1.8 | – | – |
| 2021-11-02 | 02:57 | 03:01 | 7 | M1.7 | – | – |
| 2021-10-09 | 06:19 | 06:38 | 33 | M1.6 | – | – |
| 2021-11-02 | 02:03 | 02:51 | – | M1.6 | – | – |
| 2021-12-28 | 15:59 | 16:11 | 20 | M1.6 | – | – |
| 2021-07-04 | 05:01 | 05:09 | 13 | M1.5 | – | – |
| 2021-10-29 | 02:22 | 02:42 | 30 | M1.5 | – | – |
| 2021-11-01 | 00:57 | 01:45 | 72 | M1.5 | – | – |
| 2021-05-22 | 21:30 | 21:36 | 12 | M1.4 | – | – |
| 2021-10-28 | 07:30 | 07:40 | 14 | M1.4 | – | – |
| 2021-12-05 | 06:58 | 07:19 | 37 | M1.4 | – | – |
All times UTC. Until June 2017 classes are NOAA's reports of the time (GOES-15 and earlier included a 0.7 scaling factor); later classes come from calibrated GOES-16/18 data, so the same flare reads about 1.4× larger. Do not compare the two periods directly.
About this page
473 flares of class C+ in 2021: 29 M-class and 1 X-class.