Sunspot region AR8657

Number of
sunspots
Size Class Magn. Class Spot Location
1999/08/03 1 40 HSX S32E71
1999/08/04 1 60 HAX S31E56
1999/08/05 6 140 CSO S30E43
1999/08/06 11 90 CSO S30E28
1999/08/07 11 100 DSO S30E16
1999/08/08 11 130 DSO S30E04
1999/08/09 7 90 DSO S31W09
1999/08/10 5 100 DAO S30W22
1999/08/11 2 60 CSO S31W35
1999/08/12 2 60 CSO S31W48
1999/08/13 1 60 HSX S28W56
1999/08/14 1 70 HSX S30W68
1999/08/15 1 20 HSX S31W85
C
2

The top 2 solar flares from sunspot region 8657

Start Maximum End
1C1.761999/08/0814:2314:2614:31
2C1.711999/08/1014:2814:3214:49

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Space weather facts

Last X-flare2026/04/24X2.5
Last M-flare2026/04/26M6.0
Last geomagnetic storm2026/04/20Kp5 (G1)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 202682.9 -3
Last 30 days89.3 +6.7

This day in history*

Solar flares
11998X1.54
22006X1.13
32024M3.1
42003M2.46
52024M2.1
DstG
11960-100G3
21989-98G2
31981-95G2
41984-91G1
51979-84G1
*since 1994

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