Solar Flare WatchHome › Flare history › 1988
M7.3 solar flare on 1988-12-20
ClassM7.3NOAA report
Peak12:441988-12-20 UTC
Duration194 min
Peak flux7.3e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 20 / 1845 |
| Other M/X flares that day | 2 |
| M/X flares that month | 49 |
| Solar cycle | Cycle 22 |
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
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.
← X1.1 1988-12-18M5.3 1988-12-22 →
About this page
A M7.3 flare that began 1988-12-20 12:18 UTC; No. 20 of 1,845 C-class-or-larger flares in 1988.