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X1.9 solar flare on 1990-12-26
ClassX1.9NOAA report
Peak14:011990-12-26 UTC
Duration93 min
Peak flux1.9e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 206 / 491 |
| Rank in year | 8 / 2551 |
| Other M/X flares that day | 2 |
| M/X flares that month | 53 |
| Solar cycle | Cycle 22 |
| Position on disk | S26E21 |
| Active region | AR 6420 (26 flares) |
Compared with the strongest flares of 1990
X9.3
X5.5
X3.6
X3.4
X3.0
X2.4
X2.2
X1.9
X1.8
X1.7
X1.5
X1.4
Other M/X flares that day
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.
← X1.8 1990-12-24M6.9 1991-01-17 →
About this page
A X1.9 flare that began 1990-12-26 13:55 UTC; No. 8 of 2,551 C-class-or-larger flares in 1990.