Sunspot region AR8437

Number of
sunspots
Size Class Magn. Class Spot Location
1999/01/11 1 90 HSX N11E68
1999/01/12 1 90 HSX N11E55
1999/01/13 1 80 HSX N11E42
1999/01/14 1 90 HSX N11E29
1999/01/15 1 100 HSX N10E16
1999/01/16 1 100 HSX N10E03
1999/01/17 1 80 HSX N10W11
1999/01/18 1 70 HSX N10W24
1999/01/19 1 90 HSX N11W37
1999/01/20 1 70 HSX N11W50
1999/01/21 1 70 HSX N11W64
1999/01/22 1 60 HSX N11W77
1999/01/23 1 50 HSX N11W89

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Space weather facts

Last X-flare2025/12/08X1.1
Last M-flare2025/12/29M1.0
Last geomagnetic storm2025/12/22Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 202591.8 -22.8
December 2025117.2 +25.4
Last 30 days117.2 +30.3

This day in history*

Solar flares
12024X1.59
22024X1.1
32004M6.08
42024M5.02
52022M3.7
DstG
11989-103G1
21981-82G2
31997-77G1
41985-63G2
51992-62
*since 1994

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