Solar flares on March 18, 2025
The most powerful solar flare in 24 hours
C3.0 (normal) flare - March 18 at 12:26 AM
Solar activity index
Value as of the end of the day on March 18, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from March 17, 2025 to March 18, 2025
Time zone — UTC-04 (Providence) — summer time
List of solar flares for March 18, 2025
The total number of solar flares of class C and higher — 4 flares
C class — 4 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C2.1 | 17:04 | 17:12 | 17:21 | 4028 |
| C1.7 | 11:11 | 11:17 | 11:27 | — |
| C2.1 | 08:09 | 08:22 | 08:35 | 4025 |
| C3.0 | 00:20 | 00:26 | 00:33 | 4028 |