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X5.4 solar flare on 2003-10-23
ClassX5.4NOAA report
Peak08:352003-10-23 UTC
Duration30 min
Peak flux5.4e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 50 / 491 |
| Rank in year | 5 / 1496 |
| Other M/X flares that day | 4 |
| M/X flares that month | 44 |
| Solar cycle | Cycle 23 |
| Position on disk | S21E88 |
| Active region | AR 10486 (43 flares) |
Compared with the strongest flares of 2003
X28.0
X17.2
X10.0
X8.3
X5.4
X3.9
X3.6
X2.7
X1.7
X1.6
X1.5
X1.5
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 02:35 | 02:41 | 9 | M2.4 | N03E15 | 10484 | |
| 07:02 | 07:08 | 8 | M3.2 | N04E13 | 10484 | |
| 10:49 | 10:53 | 6 | M2.7 | – | 10484 | |
| 19:50 | 20:04 | 24 | X1.1 | S17E84 | 10486 |
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.
← M9.9 2003-10-22X1.1 2003-10-23 →
About this page
A X5.4 flare that began 2003-10-23 08:19 UTC; No. 5 of 1,496 C-class-or-larger flares in 2003.