Solar Flare WatchHome › Flare history › 1991
M5.3 solar flare on 1991-02-07
ClassM5.3NOAA report
Peak21:161991-02-07 UTC
Duration20 min
Peak flux5.3e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 103 / 3297 |
| Other M/X flares that day | 4 |
| M/X flares that month | 53 |
| Solar cycle | Cycle 22 |
| Position on disk | N16E43 |
| Active region | AR 6487 (18 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 | – | – | |
| 14:56 | 15:02 | 39 | M8.8 | S10W86 | 6471 | |
| 17:03 | 17:12 | 89 | M4.9 | – | – |
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.
← M8.8 1991-02-07M7.2 1991-02-08 →
About this page
A M5.3 flare that began 1991-02-07 21:14 UTC; No. 103 of 3,297 C-class-or-larger flares in 1991.