Solar Flare WatchHome › Flare history › 1991
M6.3 solar flare on 1991-03-22
ClassM6.3NOAA report
Peak08:381991-03-22 UTC
Duration54 min
Peak flux6.3e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 87 / 3297 |
| Other M/X flares that day | 4 |
| M/X flares that month | 123 |
| Solar cycle | Cycle 22 |
| Position on disk | S25E35 |
| Active region | AR 6555 (79 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 |
|---|---|---|---|---|---|---|
| 09:28 | 09:39 | 41 | M1.0 | S23E25 | 6555 | |
| 11:44 | 11:50 | 35 | M1.3 | S19E29 | 6555 | |
| 19:03 | 20:17 | 170 | M2.5 | S27E23 | 6555 | |
| 22:43 | 22:45 | 34 | X9.4 | S26E28 | 6555 |
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.
← M5.4 1991-03-21X9.4 1991-03-22 →
About this page
A M6.3 flare that began 1991-03-22 08:30 UTC; No. 87 of 3,297 C-class-or-larger flares in 1991.