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-flare2026/02/04X4.21
Last M-flare2026/03/26M4.0
Last geomagnetic storm2026/03/25Kp5+ (G1)
Spotless days
Last 365 days3 days
20263 days (4%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
February 202678.2 -34.3
March 202681.4 +3.2
Last 30 days81.4 +3.6

This day in history*

Solar flares
12001M3.28
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32025M2.0
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DstG
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*since 1994

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