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M6.4 solar flare on 1980-09-04
ClassM6.4NOAA report
Peak02:101980-09-04 UTC
Duration97 min
Peak flux6.4e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 40 / 2460 |
| Other M/X flares that day | 1 |
| M/X flares that month | 13 |
| Solar cycle | Cycle 21 |
| Position on disk | S07W18 |
| Active region | AR 2645 (25 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 |
|---|---|---|---|---|---|---|
| 22:14 | 22:20 | 7 | M2.2 | S09W28 | 2645 |
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.
← M5.6 1980-08-31M8.3 1980-09-08 →
About this page
A M6.4 flare that began 1980-09-04 01:52 UTC; No. 40 of 2,460 C-class-or-larger flares in 1980.