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M5.6 solar flare on 1990-01-20
ClassM5.6NOAA report
Peak13:301990-01-20 UTC
Duration42 min
Peak flux5.6e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 31 / 2551 |
| Other M/X flares that day | 2 |
| M/X flares that month | 25 |
| Solar cycle | Cycle 22 |
Compared with the strongest flares of 1990
X9.3
X5.5
X3.6
X3.4
X3.0
X2.4
X2.2
X1.9
X1.8
X1.7
X1.5
X1.4
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.
← X2.8 1989-12-31M6.9 1990-01-21 →
About this page
A M5.6 flare that began 1990-01-20 13:23 UTC; No. 31 of 2,551 C-class-or-larger flares in 1990.