Solar flares on February 4, 2001
The most powerful solar flare in 24 hours
C2.5 (normal) flare - February 4 at 8:41 AM
Solar activity index
Value as of the end of the day on February 4, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from February 3, 2001 to February 4, 2001
Time zone — UTC+00 (Dublin)
List of solar flares for February 4, 2001
The total number of solar flares of class C and higher — 9 flares
C class — 9 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.3 | 23:08 | 23:13 | 23:19 | 9334 |
| C1.0 | 12:42 | 12:45 | 12:50 | 9334 |
| C1.0 | 12:24 | 12:31 | 12:38 | — |
| C1.4 | 09:23 | 09:28 | 09:37 | — |
| C2.5 | 08:35 | 08:41 | 08:47 | 9330 |
| C1.7 | 08:18 | 08:23 | 08:27 | — |
| C2.0 | 06:04 | 06:10 | 06:16 | — |
| C1.7 | 02:35 | 02:53 | 03:26 | 9334 |
| C1.7 | 00:02 | 00:22 | 01:11 | 9330 |