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X1.2 solar flare on 2002-10-31
ClassX1.2NOAA report
Peak16:522002-10-31 UTC
Duration8 min
Peak flux1.2e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 341 / 491 |
| Rank in year | 10 / 2553 |
| Other M/X flares that day | 1 |
| M/X flares that month | 23 |
| Solar cycle | Cycle 23 |
Compared with the strongest flares of 2002
X4.8
X3.3
X3.1
X3.0
X2.1
X1.8
X1.5
X1.5
X1.5
X1.2
X1.0
X1.0
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 09:18 | 09:26 | 21 | M1.1 | – | 10175 |
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.
← M5.9 2002-10-05M7.4 2002-11-18 →
About this page
A X1.2 flare that began 2002-10-31 16:47 UTC; No. 10 of 2,553 C-class-or-larger flares in 2002.