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X1.1 solar flare on 1980-05-28

ClassX1.1NOAA report

Peak19:511980-05-28 UTC

Duration89 min

Peak flux1.1e-04W/m²

Comparison	Value
Rank among X flares (1975 – Jun 2017)	350 / 491
Rank in year	15 / 2460
Other M/X flares that day	4
M/X flares that month	35
Solar cycle	Cycle 21
Position on disk	S18W33
Active region	AR 2470 (18 flares)

Compared with the strongest flares of 1980

X9.0 11-06X9.0

X4.4 11-05X4.4

X3.9 10-25X3.9

X3.3 10-14X3.3

X3.3 11-08X3.3

X3.0 05-01X3.0

X2.7 11-07X2.7

X2.6 06-21X2.6

X2.5 07-01X2.5

X2.5 11-12X2.5

X2.2 06-04X2.2

X1.9 11-15X1.9

Other M/X flares that day

Begin	Peak	Min	Class	Location	Region
02:14	02:16	21	M2.2	S22W19	2470
17:05	17:18	48	M3.6	S18W35	2470
21:53	22:05	43	M2.8	S24W33	2470
23:32	23:44	73	M6.9	S17W39	2470

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.

← X1.4 1980-05-21 M6.9 1980-05-28 →

About this page

A X1.1 flare that began 1980-05-28 19:24 UTC; No. 15 of 2,460 C-class-or-larger flares in 1980.