Solar Flare WatchHome › Flare history › 1991
M6.8 solar flare on 1991-03-23
ClassM6.8NOAA report
Peak12:421991-03-23 UTC
Duration36 min
Peak flux6.8e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 81 / 3297 |
| Other M/X flares that day | 7 |
| M/X flares that month | 123 |
| Solar cycle | Cycle 22 |
| Position on disk | S20E14 |
| 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 |
|---|---|---|---|---|---|---|
| 01:49 | 01:54 | 16 | M3.3 | – | – | |
| 03:05 | 05:10 | 198 | M6.8 | S24E11 | 6555 | |
| 10:46 | 10:52 | 62 | M1.3 | S10E54 | 6558 | |
| 11:13 | 11:21 | 48 | M1.3 | N12W68 | 6553 | |
| 18:53 | 19:08 | 60 | M1.5 | S26E17 | 6555 | |
| 19:17 | 19:18 | 163 | M1.6 | S28E17 | 6555 | |
| 22:02 | 22:22 | 47 | M5.6 | S23E06 | 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.
← M6.8 1991-03-23M5.6 1991-03-23 →
About this page
A M6.8 flare that began 1991-03-23 12:29 UTC; No. 81 of 3,297 C-class-or-larger flares in 1991.