Sunspot region AR8158

Number of
sunspots
Size Class Magn. Class Spot Location
1998/02/12 2 10 BXO S19E77
1998/02/13 3 10 BXO S19E62
1998/02/14 4 10 BXO S19E50
1998/02/15 4 20 CSO S20E36
1998/02/16 4 10 BXO S21E23
1998/02/17 5 20 CRO S21E10
1998/02/18 3 10 BXO S21W03
1998/02/19 3 10 BXO S22W14
1998/02/20 4 20 BXO S21W29
1998/02/23 2 10 BXO S20W69
1998/02/24 5 70 CSO S19W82
B
1

The top 1 solar flares from sunspot region 8158

Start Maximum End
1B4.91998/02/1806:3106:3606:38

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Last X-flare2024/11/06X2.39
Last M-flare2024/11/20M1.1
Last geomagnetic storm2024/11/10Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
October 2024166.4 +25
November 2024142.7 -23.8
Last 30 days156.1 +4.7

This day in history*

Solar flares
11998X5.37
21998X3.59
32001X1.41
42001M5.51
51998M2.7
DstG
11991-139G2
21982-114G2
31975-97G2
42003-87G2
51960-76G2
*since 1994

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