Sunspot region AR8516

Number of
sunspots
Size Class Magn. Class Spot Location
1999/04/15 5 60 CAO S21E68
1999/04/16 8 50 CAO S19E55
1999/04/17 8 70 CAO S20E44
1999/04/18 5 80 CAO S20E30
1999/04/19 5 60 CSO S18E16
1999/04/20 5 70 CAO S18E03
1999/04/21 3 40 CSO S19W11
1999/04/22 3 50 CSO S19W25
1999/04/23 6 40 CSO S20W36
1999/04/24 8 30 CRO S19W50
1999/04/25 10 20 CRO S19W62

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Space weather facts

Last X-flare2025/12/08X1.1
Last M-flare2025/12/12M1.1
Last geomagnetic storm2025/12/12Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 202591.8 -22.8
December 2025150 +58.2
Last 30 days108.8 +10.3

This day in history*

Solar flares
12001X8.9
22006X4.88
32001M2.64
42014M2.14
52001M2.11
DstG
11958-108G2
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31985-82G1
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*since 1994

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