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X5.3 solar flare on 1991-03-25

ClassX5.3NOAA report

Peak08:181991-03-25 UTC

Duration46 min

Peak flux5.3e-04W/m²

Comparison	Value
Rank among X flares (1975 – Jun 2017)	53 / 491
Rank in year	12 / 3297
Other M/X flares that day	2
M/X flares that month	123
Solar cycle	Cycle 22
Position on disk	S24W13
Active region	AR 6555 (79 flares)

Compared with the strongest flares of 1991

X12.0 06-01X12.0

X12.0 06-04X12.0

X12.0 06-06X12.0

X12.0 06-11X12.0

X12.0 06-15X12.0

X10.0 01-25X10.0

X10.0 06-09X10.0

X9.4 03-22X9.4

X7.1 03-04X7.1

X6.1 10-27X6.1

X5.5 03-07X5.5

X5.3 03-25X5.3

Other M/X flares that day

Date	Begin	Peak	Min	Class	Location	Region
	00:08	00:22	52	X1.1	S24W08	6555
	05:27	05:35	43	M1.5	S27W10	6555

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.

← X1.1 1991-03-25 X4.7 1991-03-26 →

About this page

A X5.3 flare that began 1991-03-25 07:58 UTC; No. 12 of 3,297 C-class-or-larger flares in 1991.