Solar Flare WatchHome › Flare history › 1991
M6.6 solar flare on 1991-10-14
ClassM6.6NOAA report
Peak17:391991-10-14 UTC
Duration75 min
Peak flux6.6e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 85 / 3297 |
| Other M/X flares that day | 5 |
| M/X flares that month | 58 |
| Solar cycle | Cycle 22 |
| Position on disk | S24E34 |
| Active region | AR 6878 (7 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 |
|---|---|---|---|---|---|---|
| 03:18 | 03:20 | 38 | M1.3 | N21E76 | 6879 | |
| 10:02 | 10:13 | 26 | M1.1 | – | – | |
| 10:52 | 10:57 | 11 | M1.8 | – | – | |
| 11:12 | 11:15 | 5 | M1.0 | – | – | |
| 11:36 | 11:42 | 13 | M1.0 | – | – |
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.
← M6.0 1991-10-13X2.1 1991-10-24 →
About this page
A M6.6 flare that began 1991-10-14 17:34 UTC; No. 85 of 3,297 C-class-or-larger flares in 1991.