Solar Flare WatchHome › Flare history › 1991
M6.4 solar flare on 1991-06-10
ClassM6.4NOAA report
Peak13:561991-06-10 UTC
Duration94 min
Peak flux6.4e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 86 / 3297 |
| Other M/X flares that day | 4 |
| M/X flares that month | 72 |
| Solar cycle | Cycle 22 |
| Position on disk | N29W21 |
| Active region | AR 6659 (72 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 |
|---|---|---|---|---|---|---|
| 00:24 | 02:28 | 131 | M4.5 | N31W10 | 6659 | |
| 04:41 | 04:45 | 19 | M1.1 | – | – | |
| 10:57 | 11:03 | 50 | M1.2 | N28W20 | 6659 | |
| 16:53 | 16:54 | 68 | M3.2 | N35W11 | 6659 |
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.
← X10.0 1991-06-09X12.0 1991-06-11 →
About this page
A M6.4 flare that began 1991-06-10 13:53 UTC; No. 86 of 3,297 C-class-or-larger flares in 1991.