Solar Flare WatchHome › Flare history › 2004
X1.2 solar flare on 2004-10-30
ClassX1.2NOAA report
Peak11:462004-10-30 UTC
Duration12 min
Peak flux1.2e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 345 / 491 |
| Rank in year | 8 / 1046 |
| Other M/X flares that day | 4 |
| M/X flares that month | 10 |
| Solar cycle | Cycle 23 |
| Position on disk | N13W25 |
| Active region | AR 10691 (34 flares) |
Compared with the strongest flares of 2004
X3.6
X2.5
X2.0
X1.8
X1.8
X1.6
X1.3
X1.2
X1.1
X1.1
X1.0
X1.0
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 03:23 | 03:33 | 14 | M3.3 | N13W20 | 10691 | |
| 06:08 | 06:18 | 14 | M4.2 | N13W22 | 10691 | |
| 09:09 | 09:28 | 21 | M3.7 | N14W24 | 10691 | |
| 16:18 | 16:33 | 19 | M5.9 | N13W28 | 10691 |
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.
← X1.8 2004-08-18M5.9 2004-10-30 →
About this page
A X1.2 flare that began 2004-10-30 11:38 UTC; No. 8 of 1,046 C-class-or-larger flares in 2004.