Solar flares on March 18, 2026
The most powerful solar flare in 24 hours
M2.7 (strong) flare - March 18 at 8:42 AM
Solar activity index
Value as of the end of the day on March 18, 2026
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from March 17, 2026 to March 18, 2026
Time zone — UTC+00
List of solar flares for March 18, 2026
The total number of solar flares of class C and higher — 9 flares
C class — 8 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C1.0 | 16:45 | 16:54 | 16:58 | 4392 |
| C3.6 | 12:53 | 13:11 | 13:21 | 4392 |
| C2.8 | 09:48 | 10:02 | 10:12 | 4392 |
| M2.7 | 08:26 | 08:42 | 08:57 | 4392 |
| C2.7 | 06:44 | 06:59 | 07:09 | 4392 |
| C1.2 | 04:23 | 04:34 | 04:37 | 4397 |
| C1.1 | 03:58 | 04:19 | 04:23 | 4397 |
| C1.0 | 02:42 | 02:51 | 03:09 | 4393 |
| C3.9 | 00:59 | 01:23 | 01:33 | 4392 |