Solar flares on July 28, 2002
The most powerful solar flare in 24 hours
M2.3 (strong) flare - July 28 at 2:35 AM
Solar activity index
Value as of the end of the day on July 28, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from July 27, 2002 to July 28, 2002
Time zone — UTC+02 (Bern) — summer time
List of solar flares for July 28, 2002
The total number of solar flares of class C and higher — 15 flares
C class — 14 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C5.1 | 22:37 | 22:50 | 23:08 | 43 |
| C6.4 | 22:02 | 22:15 | 22:22 | — |
| C7.1 | 20:49 | 20:54 | 20:58 | — |
| C4.0 | 18:59 | 19:06 | 19:12 | — |
| C2.9 | 17:41 | 18:00 | 18:16 | — |
| C2.3 | 16:55 | 17:00 | 17:04 | 39 |
| C2.2 | 13:35 | 13:41 | 13:45 | 50 |
| C7.6 | 13:01 | 13:06 | 13:10 | 39 |
| C2.2 | 12:45 | 12:49 | 12:51 | 50 |
| C3.6 | 10:38 | 10:44 | 10:49 | 44 |
| C2.5 | 08:35 | 08:40 | 08:43 | 39 |
| C3.6 | 07:52 | 07:58 | 08:03 | 44 |
| C2.8 | 06:04 | 06:32 | 06:54 | — |
| C5.3 | 03:12 | 03:16 | 03:18 | — |
| M2.3 | 02:18 | 02:35 | 02:44 | 39 |