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X12.9 solar flare on 1982-12-15
ClassX12.9NOAA report
Peak01:591982-12-15 UTC
Duration96 min
Peak flux1.3e-03W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 10 / 491 |
| Rank in year | 1 / 3850 |
| Other M/X flares that day | 4 |
| M/X flares that month | 88 |
| Solar cycle | Cycle 21 |
| Position on disk | S10E24 |
| 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
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 16:20 | 16:37 | 89 | X5.0 | S10E15 | 4026 | |
| 17:03 | 17:10 | 13 | M1.4 | – | 4026 | |
| 20:45 | 21:52 | 156 | M2.5 | S06W01 | 4025 | |
| 21:53 | 21:59 | 16 | M5.2 | – | 4025 |
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.
← M5.2 1982-12-13X5.0 1982-12-15 →
About this page
A X12.9 flare that began 1982-12-15 01:50 UTC; No. 1 of 3,850 C-class-or-larger flares in 1982.