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X1.2 solar flare on 2013-05-15

ClassX1.2NOAA report
Peak01:482013-05-15 UTC
Duration33 min
Peak flux1.2e-04W/m²
ComparisonValue
Rank among X flares (1975 – Jun 2017)348 / 491
Rank in year8 / 1467
Other M/X flares that day0
M/X flares that month18
Solar cycleCycle 24
Position on diskN12E64
Active regionAR 11748 (15 flares)

Compared with the strongest flares of 2013

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.

← X3.2 2013-05-14M5.0 2013-05-22 →

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A X1.2 flare that began 2013-05-15 01:25 UTC; No. 8 of 1,467 C-class-or-larger flares in 2013.