Solar flares on August 18, 2002
The most powerful solar flare in 24 hours
M2.3 (strong) flare - August 18 at 10:05 AM
Solar activity index
Value as of the end of the day on August 18, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 17, 2002 to August 18, 2002
Time zone — UTC+00
List of solar flares for August 18, 2002
The total number of solar flares of class C and higher — 15 flares
C class — 12 | M class — 3 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C4.3 | 22:28 | 22:31 | 22:36 | — |
| M2.2 | 21:12 | 21:25 | 21:37 | 69 |
| C8.7 | 20:18 | 20:24 | 20:29 | 69 |
| C4.5 | 19:35 | 19:56 | 20:18 | 79 |
| C6.0 | 16:42 | 16:50 | 16:55 | 83 |
| M1.9 | 14:33 | 14:39 | 14:43 | 69 |
| C4.9 | 13:43 | 13:50 | 13:54 | 69 |
| C4.1 | 12:05 | 12:09 | 12:13 | — |
| M2.3 | 09:54 | 10:05 | 10:09 | 69 |
| C3.0 | 09:21 | 09:27 | 09:39 | 66 |
| C8.0 | 07:28 | 07:36 | 07:44 | 69 |
| C4.5 | 05:46 | 05:58 | 06:11 | 79 |
| C8.4 | 03:28 | 03:34 | 03:37 | 69 |
| C3.2 | 01:43 | 01:49 | 01:57 | 69 |
| C3.3 | 00:03 | 00:08 | 00:11 | 69 |