Solar flares on February 4, 2002
The most powerful solar flare in 24 hours
M2.3 (strong) flare - February 4 at 9:02 AM
Solar activity index
Value as of the end of the day on February 4, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from February 3, 2002 to February 4, 2002
Time zone — UTC+03 (Simferopol)
List of solar flares for February 4, 2002
The total number of solar flares of class C and higher — 7 flares
C class — 5 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C7.8 | 21:58 | 22:09 | 22:18 | 9802 |
| C3.0 | 18:22 | 18:31 | 18:42 | — |
| C2.7 | 13:06 | 13:24 | 13:32 | 9802 |
| M1.56 | 09:41 | 09:58 | 10:09 | — |
| M2.3 | 08:42 | 09:02 | 09:11 | — |
| C7.3 | 04:48 | 05:11 | 05:13 | 9801 |
| C3.7 | 01:16 | 01:21 | 01:25 | — |