Sunspot region AR12670

Number of
sunspots
Size Class Magn. Class Spot Location
2017/08/03 2 160 CSO S05E58
2017/08/04 3 150 HSX S05E45
2017/08/05 3 150 HSX S04E32
2017/08/06 3 150 HSX S06E20
2017/08/07 3 140 HSX S05E04
2017/08/08 1 140 HSX S06W09
2017/08/09 1 140 HSX S05W21
2017/08/10 1 130 HSX S06W33
2017/08/11 1 110 HSX S07W47
2017/08/12 1 110 HSX S07W59
2017/08/13 1 100 HSX S07W72
2017/08/14 1 110 HSX S07W85
2017/08/15 1 110 HSX S07W0*
BC
81

The top 9 solar flares from sunspot region 12670

Start Maximum End
1C1.322017/08/0223:5323:5900:04
2B2.942017/08/0318:1718:2618:33
3B22017/08/0318:5519:0419:23
4B1.842017/08/0602:2202:2602:31
5B1.792017/08/0221:3721:4421:48
6B1.732017/08/0517:4317:5017:53
7B1.612017/08/0609:5209:5609:59
8B1.522017/08/0523:0023:0523:09
9B1.192017/08/0219:2619:3219:37

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Space weather facts

Last X-flare2025/12/08X1.1
Last M-flare2025/12/12M1.1
Last geomagnetic storm2025/12/12Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 202591.8 -22.8
December 2025128 +36.2
Last 30 days108.4 +15.8

This day in history*

Solar flares
11998X1.15
22014M9.92
32002M3.54
41999M2.19
51999M1.36
DstG
11971-120G1
21958-111G3
31978-78G2
41988-77G1
51962-76G2
*since 1994

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