Solar Flare WatchHome › Flare history › 1991
M7.2 solar flare on 1991-12-09
ClassM7.2NOAA report
Peak13:461991-12-09 UTC
Duration43 min
Peak flux7.2e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 74 / 3297 |
| Other M/X flares that day | 11 |
| M/X flares that month | 94 |
| Solar cycle | Cycle 22 |
| Position on disk | N08E47 |
| 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 |
|---|---|---|---|---|---|---|
| 02:00 | 02:09 | 38 | M1.4 | – | – | |
| 02:21 | 02:58 | 43 | M1.2 | N09E51 | 6961 | |
| 04:08 | 04:17 | 107 | M3.6 | – | – | |
| 07:15 | 07:39 | 41 | M2.4 | N10E48 | 6961 | |
| 08:16 | 08:23 | 17 | M1.2 | – | – | |
| 09:33 | 09:44 | 47 | M4.1 | – | – | |
| 12:08 | 12:12 | 11 | M1.1 | – | – | |
| 14:28 | 14:31 | 15 | M1.2 | N08E45 | 6961 | |
| 18:50 | 18:54 | 12 | M1.1 | S06E88 | 6966 | |
| 19:49 | 20:02 | 27 | M1.2 | S05W61 | 6954 | |
| 23:45 | 23:48 | 14 | M1.0 | S08E83 | 6966 |
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 1991-12-08M6.9 1991-12-16 →
About this page
A M7.2 flare that began 1991-12-09 13:41 UTC; No. 74 of 3,297 C-class-or-larger flares in 1991.