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X1.4 solar flare on 1981-04-24

ClassX1.4NOAA report

Peak01:521981-04-24 UTC

Duration71 min

Peak flux1.4e-04W/m²

Comparison	Value
Rank among X flares (1975 – Jun 2017)	279 / 491
Rank in year	24 / 4022
Other M/X flares that day	2
M/X flares that month	87
Solar cycle	Cycle 21
Position on disk	N16W42
Active region	AR 3049 (30 flares)

Compared with the strongest flares of 1981

X5.9 04-24X5.9

X5.5 04-27X5.5

X4.0 02-26X4.0

X3.6 10-07X3.6

X3.5 07-26X3.5

X3.1 10-12X3.1

X3.0 10-14X3.0

X2.7 07-19X2.7

X2.6 08-12X2.6

X2.5 04-10X2.5

X2.4 02-20X2.4

X2.3 02-24X2.3

Other M/X flares that day

Date	Begin	Peak	Min	Class	Location	Region
	08:40	09:33	66	M3.1	–	3049
	13:46	14:11	229	X5.9	N18W50	3049

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.

← X1.0 1981-04-20 X5.9 1981-04-24 →

About this page

A X1.4 flare that began 1981-04-24 01:18 UTC; No. 24 of 4,022 C-class-or-larger flares in 1981.