Home › Flare history › 1991

M6.0 solar flare on 1991-10-13

ClassM6.0NOAA report

Peak18:161991-10-13 UTC

Duration91 min

Peak flux6.0e-05W/m²

Comparison	Value
Rank in year	95 / 3297
Other M/X flares that day	2
M/X flares that month	58
Solar cycle	Cycle 22
Position on disk	N22E82
Active region	AR 6879 (17 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
	20:10	20:13	62	M1.1	N23E79	6879
	21:12	21:13	15	M1.6	N22E80	6879

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.

← M5.2 1991-10-04 M6.6 1991-10-14 →

About this page

A M6.0 flare that began 1991-10-13 18:10 UTC; No. 95 of 3,297 C-class-or-larger flares in 1991.