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X28.0 solar flare on 2003-11-04

ClassX28.0NOAA report

Peak19:502003-11-04 UTC

Duration37 min

Peak flux2.8e-03W/m²

Comparison	Value
Rank among X flares (1975 – Jun 2017)	1 / 491
Rank in year	1 / 1496
Other M/X flares that day	3
M/X flares that month	28
Solar cycle	Cycle 23
Position on disk	S19W83
Active region	AR 10486 (43 flares)

Compared with the strongest flares of 2003

X28.0 11-04X28.0

X17.2 10-28X17.2

X10.0 10-29X10.0

X8.3 11-02X8.3

X5.4 10-23X5.4

X3.9 11-03X3.9

X3.6 05-28X3.6

X2.7 11-03X2.7

X1.7 06-09X1.7

X1.6 06-11X1.6

X1.5 03-17X1.5

X1.5 03-18X1.5

Other M/X flares that day

Begin	Peak	Min	Class	Location	Region
05:43	05:56	24	M2.6	–	–
10:11	10:22	22	M3.0	–	10488
13:43	13:49	18	M1.1	–	10486

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.

← X3.9 2003-11-03 M5.3 2003-11-05 →

About this page

A X28.0 flare that began 2003-11-04 19:29 UTC; No. 1 of 1,496 C-class-or-larger flares in 2003.