Solar Flare WatchHome › Flare history › 1991
M5.4 solar flare on 1991-07-05
ClassM5.4NOAA report
Peak08:451991-07-05 UTC
Duration60 min
Peak flux5.4e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 102 / 3297 |
| Other M/X flares that day | 3 |
| M/X flares that month | 35 |
| Solar cycle | Cycle 22 |
| Position on disk | N22E26 |
| 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 |
|---|---|---|---|---|---|---|
| 06:04 | 06:12 | 18 | M1.0 | N12W10 | 6714 | |
| 10:16 | 10:25 | 32 | M2.4 | N10W11 | 6714 | |
| 23:06 | 23:23 | 102 | M1.1 | N25E17 | 6703 |
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.
← M5.8 1991-07-01X1.9 1991-07-07 →
About this page
A M5.4 flare that began 1991-07-05 08:35 UTC; No. 102 of 3,297 C-class-or-larger flares in 1991.