Region 8471

Number of
sunspots
Size Class Magn. Class Spot Location
1999/02/24 4 80 DAO N28E55
1999/02/25 8 50 CSO N29E41
1999/02/26 11 20 BXO N30E26
1999/02/27 15 60 CRO N28E15
1999/02/28 14 80 DSO N29E01
1999/03/01 26 120 EAO N29W12
1999/03/02 31 100 EAO N28W27
1999/03/03 19 160 EAO N28W39
1999/03/04 11 170 CAO N29W53
1999/03/05 6 180 CAO N28W64
1999/03/06 1 60 HAX N28W83
BCM
3111

The top 10 solar flares from sunspot region 8471

Start Maximum End
1M6.61999/02/2816:3116:3916:43
2C6.21999/03/0214:4715:1915:30
3C4.51999/03/0303:3103:4503:56
4C3.11999/03/0113:2913:3713:48
5C2.21999/02/2821:3421:4821:57
6C2.01999/03/0301:2201:2801:37
7C2.01999/03/0105:2805:4206:05
8C1.71999/03/0103:3703:4503:55
9C1.51999/02/2620:1520:2120:27
10C1.11999/02/2618:5619:0919:15

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/08/05Kp5 (G1)
Number of spotless days in 2019:159
Current stretch spotless days:15

This day in history*

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*since 1994

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