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Sunspot region AR10021

Number of
sunspots		 Size Class Magn. Class Spot Location
2002/07/04 3 10 CRO S29E06
2002/07/05 8 40 DSO S29W08
2002/07/06 9 70 DAO S29W21
2002/07/07 11 90 DSO S29W34
2002/07/08 10 80 DAO S29W46
2002/07/09 9 80 DAO S29W60
2002/07/10 4 60 DAO S28W72
2002/07/11 1 30 HAX S28W87
C
3

The top 3 solar flares from sunspot region 10021

Start Maximum End
1C5.192002/07/0520:4720:5120:56
2C2.942002/07/0520:2520:3020:41
3C2.762002/07/0521:5022:1022:25
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Last X-flare2026/03/30X1.5
Last M-flare2026/04/04M1.0
Last geomagnetic storm2026/04/03Kp7- (G3)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 2026128.3 +42.3
Last 30 days97.5 +35.7

This day in history*

Solar flares
12001X1.21
22001M7.3
32001M4.52
42013M3.28
52004M2.47
DstG
11993-165G3
21968-112G3
31978-109G1
41984-108G2
51989-101G2
*since 1994

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