Solar flares on October 18, 2002
The most powerful solar flare in 24 hours
C7.2 (normal) flare - October 18 at 9:22 PM
Solar activity index
Value as of the end of the day on October 18, 2002
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 17, 2002 to October 18, 2002
Time zone — UTC-04 (Tallahassee) — summer time
List of solar flares for October 18, 2002
The total number of solar flares of class C and higher — 15 flares
C class — 15 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.9 | 22:13 | 22:17 | 22:20 | 162 |
| C7.2 | 21:10 | 21:22 | 21:41 | 158 |
| C1.6 | 19:00 | 19:06 | 19:12 | — |
| C2.9 | 16:29 | 16:35 | 16:41 | 162 |
| C4.1 | 15:14 | 15:27 | 15:40 | 162 |
| C2.1 | 11:19 | 11:24 | 11:37 | 162 |
| C1.7 | 09:43 | 09:47 | 09:53 | — |
| C1.6 | 09:19 | 09:22 | 09:25 | 149 |
| C2.3 | 08:09 | 08:12 | 08:16 | 162 |
| C1.6 | 07:24 | 07:28 | 07:37 | — |
| C2.4 | 06:15 | 06:27 | 06:31 | — |
| C3.0 | 06:02 | 06:07 | 06:10 | — |
| C2.7 | 05:32 | 05:36 | 05:42 | — |
| C1.2 | 02:57 | 03:11 | 03:14 | 158 |
| C2.0 | 01:28 | 01:34 | 01:42 | — |