Solar Flare WatchFlares in solar cycle 25
C12,553
M1,980
X102
LargestX8.92024-10-03
X flares by year
Cycles compared
| Cycle | Start | M | X | Largest |
|---|---|---|---|---|
| 21 | 1976-03 | 2184 | 168 | X13.0 |
| 22 | 1986-09 | 2022 | 153 | X20.0 |
| 23 | 1996-08 | 1436 | 125 | X28.0 |
| 24 | 2008-12 | 733 | 51 | X14.6 |
| 25 | 2019-12 | 1980 | 102 | X8.9 |
Top 20 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2024-10-03 | 12:08 | 12:18 | 18 | X8.9 | – | – |
| 2024-05-14 | 16:46 | 16:51 | 15 | X8.6 | – | – |
| 2026-02-01 | 23:44 | 23:57 | 20 | X8.1 | – | – |
| 2024-10-01 | 21:58 | 22:20 | 30 | X7.0 | – | – |
| 2024-05-11 | 01:10 | 01:23 | 28 | X5.8 | – | – |
| 2025-11-11 | 09:49 | 10:04 | 28 | X5.1 | – | – |
| 2023-12-31 | 21:36 | 21:55 | 31 | X4.9 | – | – |
| 2024-05-06 | 05:38 | 06:35 | 68 | X4.4 | – | – |
| 2024-09-14 | 15:13 | 15:29 | 33 | X4.4 | – | – |
| 2026-02-04 | 12:02 | 12:13 | 16 | X4.2 | – | – |
| 2025-11-14 | 07:44 | 08:30 | 56 | X4.0 | – | – |
| 2024-05-10 | 06:27 | 06:54 | 38 | X3.9 | – | – |
| 2024-05-15 | 08:18 | 08:37 | 33 | X3.4 | – | – |
| 2024-02-09 | 12:53 | 13:14 | 38 | X3.3 | – | – |
| 2024-10-24 | 03:30 | 03:57 | 56 | X3.2 | – | – |
| 2024-05-15 | 14:20 | 14:38 | 30 | X2.9 | – | – |
| 2023-12-14 | 16:47 | 17:02 | 24 | X2.8 | – | – |
| 2024-05-27 | 06:49 | 07:08 | 35 | X2.8 | – | – |
| 2026-02-02 | 00:31 | 00:36 | 9 | X2.8 | – | – |
| 2024-02-16 | 06:42 | 06:53 | 15 | X2.5 | – | – |
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
Cycle 25, which began in December 2019, has 14,635 C+ flares on record, 102 of them X-class.