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The K7RA Solar Update

ARRL

Well-Known Member
Nov 15, 2008
10,994
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Australia’s Space Weather Services issued a geomagnetic warning at 0132 UTC on December 9. It said that due to solar wind from a coronal hole, expect increased geomagnetic activity on December 10.

Both average daily solar flux and average daily sunspot numbers were higher over the December 3-9 period than on the previous week.

Average daily sunspot numbers increased from 41.6 to 48 and average da...

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