Viewing archive of Sunday, 23 April 2017 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot numberNew regionsBackground fluxMaximum flux
43 140A9.9B3.79

Sunspot regions

Region 12651

Number of
sunspots
Size Class Magn. Class Spot Location
7 140 10 CAO N11E17
HMIIF
HMIBC

Solar flares on this day

B2.2 B3.7

Region 12653

Number of
sunspots
Size Class Magn. Class Spot Location
2 1 100 60 HAX S09E57
HMIIF
HMIBC

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Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2020/02/19Kp5 (G1)
Number of spotless days in 2020:37
Current stretch spotless days:22

This day in history*

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12014M1.1
22002C7.0
32000C6.8
42000C6.3
52000C5.8
ApG
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3201815
4199615
5199412
*since 1994

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