Solar Flare WatchHome › Flare history › 1981
M5.2 solar flare on 1981-02-24
ClassM5.2NOAA report
Peak00:151981-02-24 UTC
Duration19 min
Peak flux5.2e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 67 / 4022 |
| Other M/X flares that day | 4 |
| M/X flares that month | 44 |
| Solar cycle | Cycle 21 |
| Position on disk | S16E81 |
| Active region | AR 2958 (20 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 |
|---|---|---|---|---|---|---|
| 10:47 | 11:05 | 48 | M1.0 | – | – | |
| 12:02 | 12:26 | 62 | X2.3 | – | 2954 | |
| 18:01 | 18:22 | 72 | M1.1 | S19E75 | 2958 | |
| 19:31 | 19:37 | 98 | X1.4 | S14E72 | 2958 |
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.
← X2.4 1981-02-20X2.3 1981-02-24 →
About this page
A M5.2 flare that began 1981-02-24 00:13 UTC; No. 67 of 4,022 C-class-or-larger flares in 1981.