Viewing archive of Sunday, 20 February 2011 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [MDI, AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
103 240B4.71C2.454

Sunspot regions

Region 11158

Number of
sunspots
Size Class Magn. Class Spot Location
10 -15 280 -30 DKC S19W78

Region 11161

Number of
sunspots
Size Class Magn. Class Spot Location
19 -9 250 50 EKC N11W15

Solar flares on this day

C1.69 C2.45 B8.76 B9.6 B4.38 B7.21

Region 11162

Number of
sunspots
Size Class Magn. Class Spot Location
20 2 150 -110 DAI N18W19

Solar flares on this day

C2.01

All times in UTC

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Last X-flare2026/03/30X1.5
Last M-flare2026/04/09M1.0
Last geomagnetic storm2026/04/18Kp6- (G2)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 202683.6 -2.3
Last 30 days92.3 +30.4

This day in history*

Solar flares
12022M3.7
22001M2.91
32024M2.1
42022M1.67
52021M1.1
DstG
12002-126G3
22024-117G3
31957-111G3
41977-91G2
51981-81G2
*since 1994

Aurora on this day in history

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