Solar Flare WatchHome › Flare history › 1989
X20.0 solar flare on 1989-08-16
ClassX20.0NOAA report
Peak01:171989-08-16 UTC
Duration80 min
Peak flux2.0e-03W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 2 / 491 |
| Rank in year | 1 / 2608 |
| Other M/X flares that day | 0 |
| M/X flares that month | 57 |
| Solar cycle | Cycle 22 |
| Position on disk | S18W84 |
| Active region | AR 5629 (54 flares) |
Compared with the strongest flares of 1989
X20.0
X15.0
X13.0
X9.8
X6.5
X5.7
X4.5
X4.1
X4.0
X4.0
X3.9
X3.6
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.
← M5.2 1989-08-15X2.9 1989-08-17 →
About this page
A X20.0 flare that began 1989-08-16 01:08 UTC; No. 1 of 2,608 C-class-or-larger flares in 1989.