Solar Flare WatchHome › Flare history › 1981
M7.6 solar flare on 1981-08-27
ClassM7.6NOAA report
Peak05:561981-08-27 UTC
Duration41 min
Peak flux7.6e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 53 / 4022 |
| Other M/X flares that day | 1 |
| M/X flares that month | 58 |
| Solar cycle | Cycle 21 |
| Position on disk | S13E76 |
| Active region | AR 3300 (28 flares) |
Compared with the strongest flares of 1981
X5.9
X5.5
X4.0
X3.6
X3.5
X3.1
X3.0
X2.7
X2.6
X2.5
X2.4
X2.3
Other M/X flares that day
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.
← M9.0 1981-08-27M5.7 1981-08-28 →
About this page
A M7.6 flare that began 1981-08-27 05:43 UTC; No. 53 of 4,022 C-class-or-larger flares in 1981.