Viewing archive of Friday, 21 April 2017 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot numberNew regionsBackground fluxMaximum flux
39 131B1.1B6.2

Sunspot regions

Region 12651

Number of
sunspots
Size Class Magn. Class Spot Location
5 1 130 20 DAO N12E44
HMIIF
HMIBC

Solar flares on this day

B6.2 B2.0 B4.1 B4.1

Region 12652

Number of
sunspots
Size Class Magn. Class Spot Location
1 10 HRX N13E60
HMIIF
HMIBC

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Last X-flare2017/09/10X8.2
Last M-flare2020/05/29M1.1
Last geomagnetic storm2020/04/20Kp5 (G1)
Spotless days
Last 365 days310 days
2020143 days (77%)
Current stretch19 days

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*since 1994

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