Solar Flare WatchHome › Flare history › 1991
X12.0 solar flare on 1991-06-06
ClassX12.0NOAA report
Peak01:121991-06-06 UTC
Duration81 min
Peak flux1.2e-03W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 14 / 491 |
| Rank in year | 3 / 3297 |
| Other M/X flares that day | 4 |
| M/X flares that month | 72 |
| Solar cycle | Cycle 22 |
| Position on disk | N33E44 |
| 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 |
|---|---|---|---|---|---|---|
| 04:28 | 05:06 | 84 | M1.1 | S16E55 | 6666 | |
| 07:05 | 07:06 | 21 | M1.2 | S11W68 | 6652 | |
| 07:50 | 08:05 | 77 | M1.4 | N12E21 | 6667 | |
| 17:31 | 17:45 | 66 | M3.9 | S16E50 | 6666 |
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.
← X12.0 1991-06-04X10.0 1991-06-09 →
About this page
A X12.0 flare that began 1991-06-06 00:54 UTC; No. 3 of 3,297 C-class-or-larger flares in 1991.