Solar flares on September 4, 2001
The most powerful solar flare in 24 hours
M1.8 (strong) flare - September 4 at 11:17 PM
Solar activity index
Value as of the end of the day on September 4, 2001
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from September 3, 2001 to September 4, 2001
Time zone — UTC+03 (Bucharest)
List of solar flares for September 4, 2001
The total number of solar flares of class C and higher — 6 flares
C class — 4 | M class — 2 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M1.8 | 23:12 | 23:17 | 23:22 | 9606 |
| M1.0 | 21:53 | 22:25 | 22:37 | — |
| C7.4 | 20:20 | 20:24 | 20:28 | 9606 |
| C9.0 | 18:12 | 18:53 | 19:30 | 9606 |
| C3.92 | 14:48 | 14:56 | 15:15 | 9606 |
| C5.0 | 07:10 | 07:18 | 07:27 | 9601 |