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M5.2 solar flare on 1981-12-09
ClassM5.2NOAA report
Peak19:121981-12-09 UTC
Duration202 min
Peak flux5.2e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 68 / 4022 |
| Other M/X flares that day | 2 |
| M/X flares that month | 20 |
| Solar cycle | Cycle 21 |
| Position on disk | N12W16 |
| Active region | AR 3496 (11 flares) |
Compared with the strongest flares of 1981
X5.9
X5.5
X4.0
X3.6
X3.5
X3.1
X3.0
X2.7
X2.6
X2.5
X2.4
X2.3
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 03:27 | 03:45 | 99 | M4.5 | N20W06 | 3492 | |
| 06:38 | 06:46 | 33 | M3.0 | S17E44 | 3504 |
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.
← M5.0 1981-11-14M8.1 1982-01-02 →
About this page
A M5.2 flare that began 1981-12-09 18:17 UTC; No. 68 of 4,022 C-class-or-larger flares in 1981.