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The K7RA Solar Update

ARRL

Well-Known Member
Nov 15, 2008
10,887
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Eleven days with no sunspots, but something emerged late Thursday, and it may be the return of old sunspot group 1069. Sunspot group 1069 was visible from May 4-8 before disappearing over the horizon. The return of that sunspot gives a daily sunspot number of 12 for May 20. Sunspot numbers for May 13-19 were 0, 0, 0, 0, 0, 0 and 0, with a mean of 0. The 10.7 cm flux was 69.4, 69.7, 70.3, 68.5, ...





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