Viewing archive of Wednesday, 20 October 2004 - Sunspot regions

It appears that the image of the visible solar disk for this day in history is missing.
Sunspot number New regionsBackground fluxMaximum fluxCM
129 431B3M3.7621

Sunspot regions

Region 10682

Number of
sunspots
Size Class Magn. Class Spot Location
9 -6 120 -10 EAO S13W19

Region 10683

Number of
sunspots
Size Class Magn. Class Spot Location
5 -5 60 10 BXO S11W05

Region 10684

Number of
sunspots
Size Class Magn. Class Spot Location
2 1 40 20 CSO S04E41

Region 10685

Number of
sunspots
Size Class Magn. Class Spot Location
7 -2 30 10 CSO S06E12

Region 10686

Number of
sunspots
Size Class Magn. Class Spot Location
1 10 AXX S20E31

Region 10687

Number of
sunspots
Size Class Magn. Class Spot Location
2 120 DAO N10E79

All times in UTC

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Last X-flare2026/03/30X1.5
Last M-flare2026/04/04M1.0
Last geomagnetic storm2026/04/03Kp7- (G3)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 2026122.8 +36.9
Last 30 days100.8 +44.4

This day in history*

Solar flares
12006M1.39
22002M1.38
31997C9.01
42002C8.7
52002C6.29
DstG
12000-292G4
21995-149G4
31977-95G3
41989-85G1
51960-76G1
*since 1994

Aurora on this day in history

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