Solar Flare WatchHome › Flare history › 1991
M6.7 solar flare on 1991-03-19
ClassM6.7NOAA report
Peak01:581991-03-19 UTC
Duration53 min
Peak flux6.7e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 83 / 3297 |
| Other M/X flares that day | 3 |
| M/X flares that month | 123 |
| Solar cycle | Cycle 22 |
| Position on disk | S10W33 |
| Active region | AR 6545 (57 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 |
|---|---|---|---|---|---|---|
| 01:15 | 01:22 | 40 | M3.6 | – | – | |
| 06:12 | 06:12 | 11 | M1.2 | S10W35 | 6545 | |
| 11:00 | 11:06 | 13 | M1.7 | – | – |
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.
← M5.3 1991-03-18M7.0 1991-03-20 →
About this page
A M6.7 flare that began 1991-03-19 01:47 UTC; No. 83 of 3,297 C-class-or-larger flares in 1991.