Solar Flare WatchHome › Flare history › 1989
X1.5 solar flare on 1989-10-23
ClassX1.5NOAA report
Peak12:431989-10-23 UTC
Duration72 min
Peak flux1.5e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 262 / 491 |
| Rank in year | 34 / 2608 |
| Other M/X flares that day | 2 |
| M/X flares that month | 39 |
| Solar cycle | Cycle 22 |
| Position on disk | S27W42 |
| Active region | AR 5747 (53 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
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.
← X2.9 1989-10-22X5.7 1989-10-24 →
About this page
A X1.5 flare that began 1989-10-23 12:35 UTC; No. 34 of 2,608 C-class-or-larger flares in 1989.