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M8.2 solar flare on 1991-05-30

ClassM8.2NOAA report

Peak09:441991-05-30 UTC

Duration24 min

Peak flux8.2e-05W/m²

Comparison	Value
Rank in year	65 / 3297
Other M/X flares that day	2
M/X flares that month	41
Solar cycle	Cycle 22
Position on disk	N07E30
Active region	AR 6654 (32 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
	03:40	03:43	59	M1.4	N06E41	6654
	11:17	11:27	42	M1.9	S09E22	6652

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 1991-05-29 X12.0 1991-06-01 →

About this page

A M8.2 flare that began 1991-05-30 09:43 UTC; No. 65 of 3,297 C-class-or-larger flares in 1991.