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X1.2 solar flare on 2003-10-26

ClassX1.2NOAA report
Peak18:192003-10-26 UTC
Duration120 min
Peak flux1.2e-04W/m²
ComparisonValue
Rank among X flares (1975 – Jun 2017)344 / 491
Rank in year18 / 1496
Other M/X flares that day3
M/X flares that month44
Solar cycleCycle 23
Position on diskN02W38
Active regionAR 10484 (48 flares)

Compared with the strongest flares of 2003

Other M/X flares that day

DateBeginPeakMinClassLocationRegion
05:5706:5496X1.2S15E4410486
14:1514:209M1.0N05W3310484
21:3421:4014M7.6N01W3810484
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.

← X1.2 2003-10-26M7.6 2003-10-26 →

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A X1.2 flare that began 2003-10-26 17:21 UTC; No. 18 of 1,496 C-class-or-larger flares in 2003.