Solar Flare WatchHome › Flare history › 1991
M7.3 solar flare on 1991-07-11
ClassM7.3NOAA report
Peak10:181991-07-11 UTC
Duration257 min
Peak flux7.3e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 70 / 3297 |
| Other M/X flares that day | 1 |
| M/X flares that month | 35 |
| Solar cycle | Cycle 22 |
| Position on disk | N22W51 |
| Active region | AR 6703 (22 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 |
|---|---|---|---|---|---|---|
| 21:49 | 22:00 | 141 | M1.9 | N35W37 | 6713 |
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.
← X1.9 1991-07-07X1.1 1991-07-17 →
About this page
A M7.3 flare that began 1991-07-11 08:35 UTC; No. 70 of 3,297 C-class-or-larger flares in 1991.