Solar flares on August 18, 2002
The most powerful solar flare in 24 hours
M2.3 (strong) flare - August 18 at 3:05 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-07 (Phoenix)
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 |
|---|---|---|---|---|
| C2.4 | 23:30 | 23:34 | 23:37 | 0 |
| C2.6 | 21:42 | 21:46 | 21:52 | — |
| C2.6 | 20:46 | 21:01 | 21:16 | 69 |
| C2.4 | 18:05 | 18:33 | 18:42 | 79 |
| C4.3 | 15:28 | 15:31 | 15:36 | — |
| M2.2 | 14:12 | 14:25 | 14:37 | 69 |
| C8.7 | 13:18 | 13:24 | 13:29 | 69 |
| C4.5 | 12:35 | 12:56 | 13:18 | 79 |
| C6.0 | 09:42 | 09:50 | 09:55 | 83 |
| M1.9 | 07:33 | 07:39 | 07:43 | 69 |
| C4.9 | 06:43 | 06:50 | 06:54 | 69 |
| C4.1 | 05:05 | 05:09 | 05:13 | — |
| M2.3 | 02:54 | 03:05 | 03:09 | 69 |
| C3.0 | 02:21 | 02:27 | 02:39 | 66 |
| C8.0 | 00:28 | 00:36 | 00:44 | 69 |