Solar Flare WatchHome › Flare history › 2001
X1.2 solar flare on 2001-10-22
ClassX1.2NOAA report
Peak17:592001-10-22 UTC
Duration30 min
Peak flux1.2e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 340 / 491 |
| Rank in year | 18 / 2429 |
| Other M/X flares that day | 2 |
| M/X flares that month | 36 |
| Solar cycle | Cycle 23 |
| Position on disk | S18E16 |
| Active region | AR 9672 (21 flares) |
Compared with the strongest flares of 2001
X20.0
X14.4
X6.2
X5.6
X5.3
X3.4
X2.8
X2.6
X2.3
X2.0
X1.7
X1.6
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.
← M6.7 2001-10-22M6.5 2001-10-23 →
About this page
A X1.2 flare that began 2001-10-22 17:44 UTC; No. 18 of 2,429 C-class-or-larger flares in 2001.