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M7.8 solar flare on 1980-08-21
ClassM7.8NOAA report
Peak19:021980-08-21 UTC
Duration53 min
Peak flux7.8e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 31 / 2460 |
| Other M/X flares that day | 1 |
| M/X flares that month | 18 |
| Solar cycle | Cycle 21 |
| Position on disk | N20W14 |
| Active region | AR 2629 (39 flares) |
Compared with the strongest flares of 1980
X9.0
X4.4
X3.9
X3.3
X3.3
X3.0
X2.7
X2.6
X2.5
X2.5
X2.2
X1.9
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 13:35 | 13:50 | 48 | M1.9 | N19W08 | 2629 |
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 1980-07-23M5.6 1980-08-31 →
About this page
A M7.8 flare that began 1980-08-21 18:54 UTC; No. 31 of 2,460 C-class-or-larger flares in 1980.