Solar flares on October 19, 2001
The most powerful solar flare in 24 hours
X1.6 (very strong) flare - October 19 at 4:30 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+00
List of solar flares for October 19, 2001
The total number of solar flares of class C and higher — 16 flares
C class — 8 | M class — 6 | X class — 2
| Class | begin | max | end | region |
|---|---|---|---|---|
| M3.3 | 23:14 | 23:25 | 23:33 | 9658 |
| C3.9 | 21:36 | 22:02 | 22:09 | 9658 |
| C4.1 | 20:58 | 21:03 | 21:08 | 9658 |
| X1.6 | 16:13 | 16:30 | 16:43 | 9661 |
| C3.2 | 15:45 | 15:48 | 15:51 | 9671 |
| C3.5 | 14:36 | 14:53 | 15:06 | — |
| C3.8 | 13:36 | 13:40 | 13:44 | 9658 |
| C7.8 | 12:19 | 12:33 | 12:42 | 9672 |
| M5.7 | 09:35 | 09:43 | 09:55 | 9658 |
| C8.9 | 06:56 | 07:00 | 07:04 | 9661 |
| M1.3 | 06:35 | 06:45 | 06:53 | 9658 |
| C4.2 | 05:26 | 05:29 | 05:36 | — |
| M1.0 | 03:14 | 03:16 | 03:18 | — |
| M1.4 | 02:52 | 02:58 | 03:03 | 9671 |
| M1.2 | 02:20 | 02:32 | 02:46 | — |
| X1.6 | 00:47 | 01:05 | 01:13 | 9661 |