Solar Flare WatchHome › Flare history › 1991
M5.3 solar flare on 1991-12-08
ClassM5.3NOAA report
Peak23:081991-12-08 UTC
Duration55 min
Peak flux5.3e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 107 / 3297 |
| Other M/X flares that day | 8 |
| M/X flares that month | 94 |
| Solar cycle | Cycle 22 |
| Position on disk | N10E55 |
| Active region | AR 6961 (41 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 |
|---|---|---|---|---|---|---|
| 00:13 | 00:13 | 81 | M1.6 | N11E69 | 6961 | |
| 00:39 | 01:22 | 43 | M1.0 | N08E63 | 6961 | |
| 05:33 | 05:53 | 79 | M1.2 | N09E14 | 6955 | |
| 14:57 | 14:58 | 19 | M1.0 | N17E05 | 6952 | |
| 15:58 | 16:02 | 70 | M1.4 | N16E14 | 6952 | |
| 16:37 | 17:05 | 82 | M3.4 | N10E57 | 6961 | |
| 20:13 | 20:23 | 32 | M1.4 | N10E57 | 6961 | |
| 20:40 | 20:44 | 20 | M1.5 | N11E10 | 6955 |
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.
← X2.2 1991-12-03M7.2 1991-12-09 →
About this page
A M5.3 flare that began 1991-12-08 23:08 UTC; No. 107 of 3,297 C-class-or-larger flares in 1991.