Solar flares on April 4, 2003
The most powerful solar flare in 24 hours
M1.9 (strong) flare - April 4 at 11:19 PM
Solar activity index
Value as of the end of the day on April 4, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from April 3, 2003 to April 4, 2003
Time zone — UTC+03 (Moscow)
List of solar flares for April 4, 2003
The total number of solar flares of class C and higher — 14 flares
C class — 13 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.9 | 22:05 | 23:19 | 23:40 | 324 |
| C2.0 | 20:28 | 20:36 | 20:45 | 0 |
| C2.2 | 20:07 | 20:12 | 20:16 | 321 |
| C1.6 | 20:00 | 20:04 | 20:06 | 321 |
| C2.7 | 18:46 | 18:55 | 19:02 | 321 |
| C3.4 | 17:10 | 17:16 | 17:31 | 324 |
| C3.1 | 16:28 | 16:41 | 16:47 | 321 |
| C3.9 | 15:08 | 15:17 | 15:22 | 324 |
| C2.0 | 12:46 | 13:01 | 13:19 | 324 |
| C2.8 | 11:35 | 11:40 | 11:44 | 324 |
| C2.4 | 09:50 | 09:55 | 10:03 | 324 |
| C1.9 | 06:42 | 07:34 | 07:36 | 324 |
| C1.2 | 05:36 | 05:39 | 05:44 | 323 |
| C2.4 | 01:29 | 01:37 | 01:57 | 324 |