Solar Flare WatchHome › Flare history › 1993
M8.7 solar flare on 1993-04-18
ClassM8.7NOAA report
Peak19:091993-04-18 UTC
Duration64 min
Peak flux8.7e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 3 / 1216 |
| Other M/X flares that day | 0 |
| M/X flares that month | 3 |
| Solar cycle | Cycle 22 |
| Position on disk | N10E55 |
| Active region | AR 7477 (26 flares) |
Compared with the strongest flares of 1993
M9.7
M9.6
M8.7
M7.7
M7.3
M7.0
M5.8
M5.4
M5.1
M5.1
M4.4
M4.3
All times UTC. Until June 2017 classes are NOAA's reports of the time (GOES-15 and earlier included a 0.7 scaling factor); later classes come from calibrated GOES-16/18 data, so the same flare reads about 1.4× larger. Do not compare the two periods directly.
← M7.0 1993-03-12M5.4 1993-06-07 →
About this page
A M8.7 flare that began 1993-04-18 19:07 UTC; No. 3 of 1,216 C-class-or-larger flares in 1993.