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M8.7 solar flare on 1980-10-09
ClassM8.7NOAA report
Peak11:271980-10-09 UTC
Duration5 min
Peak flux8.7e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 23 / 2460 |
| Other M/X flares that day | 1 |
| M/X flares that month | 33 |
| Solar cycle | Cycle 21 |
| Position on disk | S10E54 |
| Active region | AR 2726 (16 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 |
|---|---|---|---|---|---|---|
| 19:51 | 19:58 | 42 | M1.0 | S10E49 | 2726 |
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.
← M5.9 1980-10-07X3.3 1980-10-14 →
About this page
A M8.7 flare that began 1980-10-09 11:24 UTC; No. 23 of 2,460 C-class-or-larger flares in 1980.