Solar Flare WatchHome › Flare history › 1981
M5.7 solar flare on 1981-06-29
ClassM5.7NOAA report
Peak00:411981-06-29 UTC
Duration84 min
Peak flux5.7e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 62 / 4022 |
| Other M/X flares that day | 1 |
| M/X flares that month | 23 |
| Solar cycle | Cycle 21 |
| Position on disk | S15E31 |
| Active region | AR 3180 (29 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 |
|---|---|---|---|---|---|---|
| 04:11 | 04:21 | 95 | M1.9 | N12W48 | 3170 |
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.
← X1.1 1981-05-16M5.1 1981-07-15 →
About this page
A M5.7 flare that began 1981-06-29 00:34 UTC; No. 62 of 4,022 C-class-or-larger flares in 1981.