Solar Flare WatchHome › Flare history › 1982
M7.4 solar flare on 1982-03-31
ClassM7.4NOAA report
Peak22:271982-03-31 UTC
Duration22 min
Peak flux7.4e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 61 / 3850 |
| Other M/X flares that day | 4 |
| M/X flares that month | 29 |
| Solar cycle | Cycle 21 |
| Position on disk | N11W43 |
| Active region | AR 3659 (62 flares) |
Compared with the strongest flares of 1982
X12.9
X12.0
X10.1
X9.8
X8.0
X7.1
X5.9
X5.0
X4.5
X3.6
X3.2
X3.0
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 04:10 | 04:14 | 26 | M1.0 | N08W35 | 3659 | |
| 05:33 | 06:20 | 79 | M1.4 | N11W33 | 3659 | |
| 06:11 | 06:20 | 16 | M2.7 | – | 3659 | |
| 08:31 | 08:37 | 27 | M4.2 | N08W39 | 3659 |
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.
← X2.8 1982-03-30M6.7 1982-04-02 →
About this page
A M7.4 flare that began 1982-03-31 22:23 UTC; No. 61 of 3,850 C-class-or-larger flares in 1982.