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X1.2 solar flare on 1982-02-09
ClassX1.2NOAA report
Peak04:121982-02-09 UTC
Duration26 min
Peak flux1.2e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 321 / 491 |
| Rank in year | 30 / 3850 |
| Other M/X flares that day | 6 |
| M/X flares that month | 77 |
| Solar cycle | Cycle 21 |
| Position on disk | S13W90 |
| Active region | AR 3576 (52 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 |
|---|---|---|---|---|---|---|
| 03:36 | 03:41 | 21 | M2.5 | S14E06 | 3594 | |
| 04:39 | 04:44 | 9 | M4.2 | – | 3576 | |
| 07:14 | 07:15 | 26 | M1.0 | S12E20 | 3594 | |
| 09:18 | 09:26 | 19 | M2.4 | – | 3595 | |
| 11:02 | 11:10 | 16 | M1.9 | – | – | |
| 13:52 | 14:12 | 26 | M9.5 | – | – |
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.
← X1.4 1982-02-08M9.5 1982-02-09 →
About this page
A X1.2 flare that began 1982-02-09 03:57 UTC; No. 30 of 3,850 C-class-or-larger flares in 1982.