Viewing archive of Wednesday, 20 February 2013 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxCM
106 -110 -1B4.57M1.1741

Sunspot regions

Region 11671

Number of
sunspots
Size Class Magn. Class Spot Location
3 2 110 CSO N16W46

Region 11673

Number of
sunspots
Size Class Magn. Class Spot Location
24 16 90 30 DAC S11E17

Region 11675

Number of
sunspots
Size Class Magn. Class Spot Location
3 -11 60 -50 CSO N12W09

Region 11676

Number of
sunspots
Size Class Magn. Class Spot Location
1 -1 50 -30 HSX S19E37

Solar flares on this day

B7.15

Region 11677

Number of
sunspots
Size Class Magn. Class Spot Location
1 10 AXX S27E38

Region 11678

Number of
sunspots
Size Class Magn. Class Spot Location
14 8 130 100 DAI N10W40

Solar flares on this day

B8.5 M1.2 B7.38 C1.01 C4.26 C1.14 C2.44

Region 11679

Number of
sunspots
Size Class Magn. Class Spot Location
1 10 AXX S14E44

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%)
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Monthly mean Sunspot Number
March 202685.9 +7.7
April 2026122.8 +36.9
Last 30 days99.9 +42.1

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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