Viewing archive of Thursday, 17 August 2017 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot numberNew regionsBackground fluxMaximum flux
300A8.3B6.88

Sunspot regions

Region 12671

Number of
sunspots
Size Class Magn. Class Spot Location
20 9 380 210 EHC N11E49
HMIIF
HMIBC

Solar flares on this day

B1.9 B2.0 B2.5 B6.8 B1.6 B2.9

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Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2020/05/29M1.1
Last geomagnetic storm:2020/04/20Kp5 (G1)
Number of spotless days in 2020:122
Current stretch spotless days:30

This day in history*

Solar flares
12002M1.6
22002M1.3
31999C8.7
42003C8.6
52011C7.0
ApG
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2200359G3
3199451G2
4199539G2
5200022
*since 1994

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