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X1.1 solar flare on 1982-12-18
ClassX1.1NOAA report
Peak15:081982-12-18 UTC
Duration41 min
Peak flux1.1e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 359 / 491 |
| Rank in year | 40 / 3850 |
| Other M/X flares that day | 2 |
| M/X flares that month | 88 |
| Solar cycle | Cycle 21 |
| Position on disk | S11W22 |
| Active region | AR 4026 (38 flares) |
Compared with the strongest flares of 1982
X12.9
X12.0
X10.1
X9.8
X8.0
X7.1
X5.9
X5.0
X4.5
X3.6
X3.2
X3.0
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.
← X1.2 1982-12-18M9.0 1982-12-19 →
About this page
A X1.1 flare that began 1982-12-18 15:04 UTC; No. 40 of 3,850 C-class-or-larger flares in 1982.