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M8.5 solar flare on 1981-03-23
ClassM8.5NOAA report
Peak06:581981-03-23 UTC
Duration33 min
Peak flux8.5e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 45 / 4022 |
| Other M/X flares that day | 5 |
| M/X flares that month | 40 |
| Solar cycle | Cycle 21 |
| Position on disk | N10W54 |
| 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 |
|---|---|---|---|---|---|---|
| 10:11 | 10:21 | 20 | M2.1 | – | – | |
| 11:21 | 11:29 | 18 | M1.0 | – | – | |
| 12:01 | 12:09 | 14 | M3.0 | – | – | |
| 17:35 | 17:37 | 4 | M1.2 | N07W57 | 2984 | |
| 21:14 | 21:18 | 25 | M1.0 | N09W61 | 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.
← M8.9 1981-03-22X2.2 1981-03-25 →
About this page
A M8.5 flare that began 1981-03-23 06:53 UTC; No. 45 of 4,022 C-class-or-larger flares in 1981.