Sunspot region AR8470

Number of
sunspots
Size Class Magn. Class Spot Location
1999/02/23 4 10 BXO S23E72
1999/02/24 3 90 DAO S24E59
1999/02/25 5 60 DSO S24E45
1999/02/26 9 40 CAO S23E32
1999/02/27 4 40 CSO S24E19
1999/02/28 1 30 HSX S23E04
1999/03/01 1 10 HSX S23W10
B
1

The top 1 solar flares from sunspot region 8470

Start Maximum End
1B5.211999/02/2607:4607:5007:56

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Last X-flare2024/09/14X4.54
Last M-flare2024/09/14M3.0
Last geomagnetic storm2024/09/17Kp8- (G4)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
August 2024215.5 +19
September 2024147.6 -68
Last 30 days154.6 -57.2

This day in history*

Solar flares
12023M8.72
22011M2.68
31999M1.36
42015M1.27
52001M1.1
DstG
11957-165G3
21967-110G3
31959-102G3
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51989-60
*since 1994

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