Solar Flare WatchHome › Flare history › 1990
M5.3 solar flare on 1990-09-17
ClassM5.3NOAA report
Peak21:561990-09-17 UTC
Duration36 min
Peak flux5.3e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 32 / 2551 |
| Other M/X flares that day | 2 |
| M/X flares that month | 16 |
| Solar cycle | Cycle 22 |
| Position on disk | S15E29 |
| Active region | AR 6272 (11 flares) |
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.
← X3.0 1990-08-27M8.5 1990-10-20 →
About this page
A M5.3 flare that began 1990-09-17 21:40 UTC; No. 32 of 2,551 C-class-or-larger flares in 1990.