Solar flares on March 18, 2003
The most powerful solar flare in 24 hours
X1.5 (very strong) flare - March 18 at 5:38 PM
Solar activity index
Value as of the end of the day on March 18, 2003
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from March 17, 2003 to March 18, 2003
Time zone — UTC+05:30 (Ranchi)
List of solar flares for March 18, 2003
The total number of solar flares of class C and higher — 12 flares
C class — 8 | M class — 2 | X class — 2
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.3 | 22:08 | 22:11 | 22:13 | — |
| C2.8 | 21:42 | 21:50 | 21:57 | 314 |
| X1.5 | 17:21 | 17:38 | 17:50 | 314 |
| C2.4 | 15:39 | 15:53 | 16:09 | — |
| C2.1 | 12:06 | 12:15 | 12:28 | 314 |
| M2.5 | 11:21 | 11:30 | 11:32 | 314 |
| C7.5 | 09:02 | 09:35 | 09:56 | 314 |
| C4.7 | 07:09 | 07:23 | 07:36 | 314 |
| M1.6 | 06:00 | 06:07 | 06:12 | 314 |
| C1.7 | 05:22 | 05:26 | 05:30 | 314 |
| C6.9 | 01:44 | 01:51 | 01:58 | — |
| X1.5 | 00:20 | 00:35 | 00:46 | 314 |