Solar flares on June 21, 2001
The most powerful solar flare in 24 hours
C5.7 (normal) flare - June 21 at 12:09 AM
Solar activity index
Value as of the end of the day on June 21, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from June 20, 2001 to June 21, 2001
Time zone — UTC+01 (London) — summer time
List of solar flares for June 21, 2001
The total number of solar flares of class C and higher — 12 flares
C class — 12 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.4 | 22:29 | 22:35 | 22:44 | — |
| C2.3 | 16:58 | 17:02 | 17:07 | 9503 |
| C1.4 | 14:58 | 15:01 | 15:04 | — |
| C3.5 | 12:02 | 12:10 | 12:22 | — |
| C2.5 | 09:48 | 10:17 | 10:39 | — |
| C3.1 | 06:01 | 06:37 | 07:09 | — |
| C2.5 | 05:36 | 05:46 | 05:56 | 9504 |
| C1.8 | 04:16 | 04:19 | 04:22 | 9504 |
| C1.8 | 03:59 | 04:03 | 04:12 | — |
| C2.4 | 02:27 | 02:32 | 02:37 | 9504 |
| C2.5 | 02:09 | 02:17 | 02:23 | 9506 |
| C5.7 | 23:51 | 00:09 | 00:24 | — |