Solar Flare WatchHome › Flare history › 1991
M6.9 solar flare on 1991-12-16
ClassM6.9NOAA report
Peak19:271991-12-16 UTC
Duration7 min
Peak flux6.9e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 78 / 3297 |
| Other M/X flares that day | 4 |
| M/X flares that month | 94 |
| Solar cycle | Cycle 22 |
| 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 |
|---|---|---|---|---|---|---|
| 05:00 | 05:00 | 10 | M2.7 | N04W45 | 6961 | |
| 06:34 | 06:40 | 25 | M1.6 | S12E68 | 6972 | |
| 11:57 | 12:04 | 13 | M1.2 | – | – | |
| 12:11 | 13:12 | 126 | M3.2 | – | – |
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.
← M7.2 1991-12-09X3.5 1991-12-20 →
About this page
A M6.9 flare that began 1991-12-16 19:22 UTC; No. 78 of 3,297 C-class-or-larger flares in 1991.