Solar flares on October 19, 2001
The most powerful solar flare in 24 hours
X1.6 (very strong) flare - October 19 at 11:30 AM
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-05 (Springfield) — 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 | 19:11 | 19:28 | 19:42 | — |
| M3.3 | 18:14 | 18:25 | 18:33 | 9658 |
| C3.9 | 16:36 | 17:02 | 17:09 | 9658 |
| C4.1 | 15:58 | 16:03 | 16:08 | 9658 |
| X1.6 | 11:13 | 11:30 | 11:43 | 9661 |
| C3.2 | 10:45 | 10:48 | 10:51 | 9671 |
| C3.5 | 09:36 | 09:53 | 10:06 | — |
| C3.8 | 08:36 | 08:40 | 08:44 | 9658 |
| C7.8 | 07:19 | 07:33 | 07:42 | 9672 |
| M5.7 | 04:35 | 04:43 | 04:55 | 9658 |
| C8.9 | 01:56 | 02:00 | 02:04 | 9661 |
| M1.3 | 01:35 | 01:45 | 01:53 | 9658 |
| C4.2 | 00:26 | 00:29 | 00:36 | — |