Solar flares on September 30, 2023
The most powerful solar flare in 24 hours
M2.5 (strong) flare - September 30 at 9:32 PM
Solar activity index
Value as of the end of the day on September 30, 2023
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 29, 2023 to September 30, 2023
Time zone — UTC-04 (Concord) — summer time
List of solar flares for September 30, 2023
The total number of solar flares of class C and higher — 18 flares
C class — 16 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C9.3 | 23:21 | 23:24 | 23:30 | 3445 |
| M2.5 | 21:10 | 21:32 | 21:43 | 3452 |
| C3.0 | 21:02 | 21:06 | 21:10 | 3450 |
| C3.1 | 20:40 | 20:45 | 20:51 | 3452 |
| C2.8 | 19:41 | 19:55 | 20:12 | — |
| C6.6 | 17:39 | 17:45 | 17:52 | 3450 |
| C6.2 | 17:18 | 17:38 | 17:39 | 3452 |
| C2.7 | 16:26 | 16:37 | 16:56 | 3451 |
| C4.7 | 14:15 | 14:25 | 14:34 | 3451 |
| M1.2 | 12:16 | 12:35 | 12:49 | 3451 |
| C6.3 | 11:57 | 12:07 | 12:14 | 3451 |
| C5.1 | 10:35 | 10:44 | 10:57 | 3450 |
| C3.9 | 10:05 | 10:18 | 10:32 | 3447 |
| C4.9 | 08:23 | 08:29 | 08:36 | 3451 |
| C9.6 | 07:51 | 07:57 | 08:06 | 3445 |
| C2.6 | 06:40 | 06:46 | 06:56 | 3451 |
| C2.4 | 02:51 | 02:56 | 03:02 | 3451 |
| C8.0 | 01:56 | 02:00 | 02:06 | 3445 |