Solar flares on October 19, 2001
The most powerful solar flare in 24 hours
X1.6 (very strong) flare - October 19 at 12:30 PM
Solar activity index
Value as of the end of the day on October 19, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from October 18, 2001 to October 19, 2001
Time zone — UTC-04 (Quebec) — summer time
List of solar flares for October 19, 2001
The total number of solar flares of class C and higher — 13 flares
C class — 9 | M class — 3 | X class — 1
| Class | begin | max | end | region |
|---|---|---|---|---|
| C7.3 | 20:11 | 20:28 | 20:42 | — |
| M3.3 | 19:14 | 19:25 | 19:33 | 9658 |
| C3.9 | 17:36 | 18:02 | 18:09 | 9658 |
| C4.1 | 16:58 | 17:03 | 17:08 | 9658 |
| X1.6 | 12:13 | 12:30 | 12:43 | 9661 |
| C3.2 | 11:45 | 11:48 | 11:51 | 9671 |
| C3.5 | 10:36 | 10:53 | 11:06 | — |
| C3.8 | 09:36 | 09:40 | 09:44 | 9658 |
| C7.8 | 08:19 | 08:33 | 08:42 | 9672 |
| M5.7 | 05:35 | 05:43 | 05:55 | 9658 |
| C8.9 | 02:56 | 03:00 | 03:04 | 9661 |
| M1.3 | 02:35 | 02:45 | 02:53 | 9658 |
| C4.2 | 01:26 | 01:29 | 01:36 | — |