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M9.3 solar flare on 2026-06-03

ClassM9.3GOES-18 science data

Peak01:362026-06-03 UTC

Duration21 min

Peak flux9.3e-05W/m²

Comparison	Value
Rank in year	14 / 1764
Other M/X flares that day	2
M/X flares that month	15
Solar cycle	Cycle 25

Compared with the strongest flares of 2026

X8.1 02-01X8.1

X4.2 02-04X4.2

X2.8 02-02X2.8

X2.5 04-24X2.5

X2.4 04-24X2.4

X1.9 01-18X1.9

X1.6 02-02X1.6

X1.5 02-03X1.5

X1.4 03-30X1.4

X1.2 07-04X1.2

X1.1 06-30X1.1

X1.0 02-01X1.0

Other M/X flares that day

Date	Begin	Peak	Min	Class	Location	Region
	06:49	07:00	18	M7.7	–	–
	11:19	11:28	16	X1.0	–	–

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.

← M5.7 2026-05-10 M7.7 2026-06-03 →

About this page

A M9.3 flare that began 2026-06-03 01:22 UTC; No. 14 of 1,764 C-class-or-larger flares in 2026.