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M7.9 solar flare on 1988-09-27
ClassM7.9NOAA report
Peak16:161988-09-27 UTC
Duration70 min
Peak flux7.9e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 19 / 1845 |
| Other M/X flares that day | 1 |
| M/X flares that month | 10 |
| Solar cycle | Cycle 22 |
| Position on disk | S27E65 |
| Active region | AR 5171 (38 flares) |
Compared with the strongest flares of 1988
X5.6
X4.7
X3.2
X2.5
X2.4
X1.6
X1.4
X1.4
X1.3
X1.2
X1.1
X1.1
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 09:50 | 09:56 | 53 | M1.6 | S23E63 | 5171 |
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.
← M9.2 1988-06-30M5.7 1988-09-28 →
About this page
A M7.9 flare that began 1988-09-27 16:07 UTC; No. 19 of 1,845 C-class-or-larger flares in 1988.