Viewing archive of Sunday, 21 April 2013 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot numberNew regionsBackground fluxMaximum fluxC
76 -250B5.1C4.5413

Sunspot regions

Region 11722

Number of
sunspots
Size Class Magn. Class Spot Location
4 30 CRO S20W0*
HMIIF
HMIBC

Region 11723

Number of
sunspots
Size Class Magn. Class Spot Location
3 -6 40 -20 CSO S20W57
HMIIF
HMIBC

Solar flares on this day

C2.7

Region 11726

Number of
sunspots
Size Class Magn. Class Spot Location
36 21 260 80 EKC N12W22
HMIIF
HMIBC

Solar flares on this day

C3.6 B7.0 B8.4 C1.0 C1.4 C2.7 B8.7 C1.3 C2.5 C1.8 C1.0 C1.0 C2.2 C2.9 C4.5 B7.8

Region 11727

Number of
sunspots
Size Class Magn. Class Spot Location
7 -2 60 10 DAO N25E31
HMIIF
HMIBC

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Spotless days
Last 365 days287 days
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This day in history*

Solar flares
12004M7.4
22004M5.6
32004M3.2
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52004M2.4
ApG
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*since 1994

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