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X1.0 solar flare on 2004-07-17
ClassX1.0NOAA report
Peak07:572004-07-17 UTC
Duration8 min
Peak flux1.0e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 428 / 491 |
| Rank in year | 11 / 1046 |
| Other M/X flares that day | 3 |
| M/X flares that month | 39 |
| Solar cycle | Cycle 23 |
| Position on disk | S11E24 |
| Active region | AR 10649 (62 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 |
|---|---|---|---|---|---|---|
| 16:45 | 16:51 | 12 | M2.5 | S10E18 | 10649 | |
| 21:24 | 21:31 | 14 | M2.0 | S09E15 | 10649 | |
| 22:54 | 23:08 | 22 | M1.1 | S10E14 | 10649 |
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.
← X3.6 2004-07-16M8.6 2004-07-20 →
About this page
A X1.0 flare that began 2004-07-17 07:51 UTC; No. 11 of 1,046 C-class-or-larger flares in 2004.