Solar Flare WatchHome › Flare history › 1991
M7.2 solar flare on 1991-02-08
ClassM7.2NOAA report
Peak16:151991-02-08 UTC
Duration7 min
Peak flux7.2e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 72 / 3297 |
| Other M/X flares that day | 2 |
| M/X flares that month | 53 |
| Solar cycle | Cycle 22 |
| Position on disk | S12W90 |
| 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 |
|---|---|---|---|---|---|---|
| 02:44 | 02:45 | 8 | M2.1 | S13W86 | 6471 | |
| 06:29 | 07:48 | 162 | M4.7 | – | – |
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.
← M5.3 1991-02-07X1.2 1991-02-25 →
About this page
A M7.2 flare that began 1991-02-08 16:15 UTC; No. 72 of 3,297 C-class-or-larger flares in 1991.