Solar Flare WatchHome › Flare history › 1991
X1.4 solar flare on 1991-12-24
ClassX1.4NOAA report
Peak10:301991-12-24 UTC
Duration80 min
Peak flux1.4e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 291 / 491 |
| Rank in year | 38 / 3297 |
| Other M/X flares that day | 3 |
| M/X flares that month | 94 |
| Solar cycle | Cycle 22 |
| Position on disk | S17E14 |
| Active region | AR 6982 (26 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 |
|---|---|---|---|---|---|---|
| 02:12 | 02:25 | 16 | M1.1 | S18E17 | 6982 | |
| 03:05 | 03:11 | 19 | M3.4 | – | – | |
| 16:14 | 16:19 | 11 | M1.1 | S15E73 | 6988 |
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.
← M8.5 1991-12-22M7.8 1991-12-28 →
About this page
A X1.4 flare that began 1991-12-24 10:13 UTC; No. 38 of 3,297 C-class-or-larger flares in 1991.