Solar Flare WatchHome › Flare history › 1991
M7.9 solar flare on 1991-11-10
ClassM7.9NOAA report
Peak20:161991-11-10 UTC
Duration27 min
Peak flux7.9e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 66 / 3297 |
| Other M/X flares that day | 2 |
| M/X flares that month | 29 |
| Solar cycle | Cycle 22 |
| Position on disk | S15E43 |
| Active region | AR 6919 (34 flares) |
Compared with the strongest flares of 1991
X12.0
X12.0
X12.0
X12.0
X12.0
X10.0
X10.0
X9.4
X7.1
X6.1
X5.5
X5.3
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.
← M6.9 1991-11-10X1.5 1991-11-15 →
About this page
A M7.9 flare that began 1991-11-10 20:16 UTC; No. 66 of 3,297 C-class-or-larger flares in 1991.