The K7RA Solar Update

Discussion in 'ARRL News Feeds' started by American Radio Relay, Sep 14, 2018.

  1. We observed a return of sunspot activity during the past reporting week (September 6-12), with spots on four days, but not consecutive. Sunspots were visible on September 8-9 and 11-12. Average daily sunspot numbers increased to 7.6, compared to zero over the previous seven days.

    Average daily solar flux increased from 67.8 to 68.6, and planetary A index doubled from 6.3 to 12.6, while mid-latit...

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