Solar flares on August 18, 2012
The most powerful solar flare in 24 hours
M5.5 (strong) flare - August 18 at 2:02 AM
Solar activity index
Value as of the end of the day on August 18, 2012
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from August 17, 2012 to August 18, 2012
Time zone — UTC+01 (London) — summer time
List of solar flares for August 18, 2012
The total number of solar flares of class C and higher — 17 flares
C class — 13 | M class — 4 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.0 | 23:46 | 23:54 | 00:00 | 1548 |
| C1.1 | 22:20 | 22:27 | 22:33 | 1548 |
| C2.5 | 20:06 | 20:13 | 20:19 | 1548 |
| M2.0 | 17:02 | 17:07 | 17:09 | 1548 |
| C1.3 | 15:58 | 16:07 | 16:18 | 1548 |
| C7.3 | 15:18 | 15:27 | 15:30 | 1548 |
| C2.1 | 14:29 | 14:38 | 14:42 | 1548 |
| C1.0 | 13:23 | 13:26 | 13:28 | — |
| C2.4 | 12:49 | 12:53 | 12:55 | — |
| C1.3 | 12:41 | 12:45 | 12:47 | 1548 |
| C1.9 | 11:32 | 11:37 | 11:39 | 1548 |
| C1.0 | 10:46 | 10:53 | 11:08 | 1548 |
| C1.9 | 09:50 | 09:58 | 10:04 | — |
| C2.6 | 09:30 | 09:37 | 09:40 | 1548 |
| C6.1 | 07:09 | 07:18 | 07:31 | 1548 |
| M1.8 | 04:17 | 04:23 | 04:30 | 1548 |
| M5.5 | 01:24 | 02:02 | 02:07 | 1548 |