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Strongest X flares since Jun 2017 (GOES-16/18)
X14.6
X12.9
X8.9
X8.6
X8.1
X7.0
X5.8
X5.1
X4.9
X4.4
X4.4
X4.2
X4.0
X3.9
X3.4
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2017-09-06 | 11:52 | 12:02 | 18 | X14.6 | β | β |
| 2017-09-10 | 15:34 | 16:06 | 57 | X12.9 | β | β |
| 2024-10-03 | 12:08 | 12:18 | 18 | X8.9 | β | β |
| 2024-05-14 | 16:46 | 16:51 | 15 | X8.6 | β | β |
| 2026-02-01 | 23:44 | 23:57 | 20 | X8.1 | β | β |
| 2024-10-01 | 21:58 | 22:20 | 30 | X7.0 | β | β |
| 2024-05-11 | 01:10 | 01:23 | 28 | X5.8 | β | β |
| 2025-11-11 | 09:49 | 10:04 | 28 | X5.1 | β | β |
| 2023-12-31 | 21:36 | 21:55 | 31 | X4.9 | β | β |
| 2024-05-06 | 05:38 | 06:35 | 68 | X4.4 | β | β |
| 2024-09-14 | 15:13 | 15:29 | 33 | X4.4 | β | β |
| 2026-02-04 | 12:02 | 12:13 | 16 | X4.2 | β | β |
| 2025-11-14 | 07:44 | 08:30 | 56 | X4.0 | β | β |
| 2024-05-10 | 06:27 | 06:54 | 38 | X3.9 | β | β |
| 2024-05-15 | 08:18 | 08:37 | 33 | X3.4 | β | β |
| 2024-02-09 | 12:53 | 13:14 | 38 | X3.3 | β | β |
| 2017-09-06 | 08:52 | 09:10 | 25 | X3.2 | β | β |
| 2024-10-24 | 03:30 | 03:57 | 56 | X3.2 | β | β |
| 2024-05-15 | 14:20 | 14:38 | 30 | X2.9 | β | β |
| 2023-12-14 | 16:47 | 17:02 | 24 | X2.8 | β | β |
| 2024-05-27 | 06:49 | 07:08 | 35 | X2.8 | β | β |
| 2026-02-02 | 00:31 | 00:36 | 9 | X2.8 | β | β |
| 2024-02-16 | 06:42 | 06:53 | 15 | X2.5 | β | β |
| 2026-04-24 | 08:01 | 08:13 | 17 | X2.5 | β | β |
| 2025-05-14 | 08:04 | 08:19 | 27 | X2.4 | β | β |
| 2026-04-24 | 00:51 | 01:07 | 22 | X2.4 | β | β |
| 2024-11-06 | 13:24 | 13:40 | 21 | X2.3 | β | β |
| 2022-04-20 | 03:41 | 03:57 | 22 | X2.2 | β | β |
| 2023-02-17 | 19:38 | 20:16 | 71 | X2.2 | β | β |
| 2024-05-09 | 08:45 | 09:13 | 50 | X2.2 | β | β |
| 2024-12-08 | 08:50 | 09:06 | 19 | X2.2 | β | β |
| 2017-09-07 | 14:15 | 14:36 | 40 | X2.1 | β | β |
| 2024-10-07 | 19:02 | 19:13 | 28 | X2.1 | β | β |
| 2023-03-03 | 17:39 | 17:52 | 21 | X2.0 | β | β |
| 2024-10-31 | 21:12 | 21:20 | 14 | X2.0 | β | β |
| 2023-01-09 | 18:37 | 18:50 | 19 | X1.9 | β | β |
| 2024-07-16 | 13:11 | 13:26 | 24 | X1.9 | β | β |
| 2025-02-23 | 19:22 | 19:27 | 11 | X1.9 | β | β |
| 2025-12-01 | 02:27 | 02:49 | 38 | X1.9 | β | β |
| 2026-01-18 | 17:27 | 18:09 | 84 | X1.9 | β | β |
| 2024-02-21 | 22:52 | 23:07 | 21 | X1.8 | β | β |
| 2024-10-09 | 01:25 | 01:56 | 78 | X1.8 | β | β |
| 2024-10-26 | 06:32 | 07:19 | 82 | X1.8 | β | β |
| 2025-01-04 | 12:35 | 12:48 | 20 | X1.8 | β | β |
| 2025-06-19 | 23:37 | 23:50 | 17 | X1.8 | β | β |
| 2024-08-05 | 13:24 | 13:40 | 29 | X1.7 | β | β |
| 2025-11-04 | 17:15 | 17:34 | 36 | X1.7 | β | β |
| 2025-11-09 | 07:01 | 07:35 | 54 | X1.7 | β | β |
| 2023-08-05 | 21:45 | 22:21 | 58 | X1.6 | β | β |
| 2024-02-22 | 06:17 | 06:32 | 22 | X1.6 | β | β |
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 1.4Γ larger. Do not compare the two periods directly.