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M8.9 solar flare on 1981-03-22
ClassM8.9NOAA report
Peak23:531981-03-22 UTC
Duration52 min
Peak flux8.9e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 44 / 4022 |
| Other M/X flares that day | 1 |
| M/X flares that month | 40 |
| Solar cycle | Cycle 21 |
| Position on disk | N08W47 |
| Active region | AR 2984 (30 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 |
|---|---|---|---|---|---|---|
| 19:42 | 19:50 | 30 | M1.5 | N10W45 | 2984 |
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.
← X4.0 1981-02-26M8.5 1981-03-23 →
About this page
A M8.9 flare that began 1981-03-22 23:41 UTC; No. 44 of 4,022 C-class-or-larger flares in 1981.