Solar Flare WatchHome › Flare history › 1991
M8.8 solar flare on 1991-02-07
ClassM8.8NOAA report
Peak15:021991-02-07 UTC
Duration39 min
Peak flux8.8e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 62 / 3297 |
| Other M/X flares that day | 4 |
| M/X flares that month | 53 |
| Solar cycle | Cycle 22 |
| Position on disk | S10W86 |
| Active region | AR 6471 (33 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
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 08:48 | 08:52 | 27 | M1.0 | N14E49 | 6487 | |
| 09:29 | 09:41 | 79 | M1.1 | – | – | |
| 17:03 | 17:12 | 89 | M4.9 | – | – | |
| 21:14 | 21:16 | 20 | M5.3 | N16E43 | 6487 |
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.
← M6.8 1991-02-04M5.3 1991-02-07 →
About this page
A M8.8 flare that began 1991-02-07 14:56 UTC; No. 62 of 3,297 C-class-or-larger flares in 1991.