The K7RA Solar Update

Discussion in 'ARRL News Feeds' started by American Radio Relay, Oct 5, 2018.

  1. Sunspots finally returned on September 29, after over two weeks with none.

    Average daily sunspot numbers increased from 0 to 9.6, and average daily solar flux increased from 67.9 to 68.4 over the past week, September 27 through October 3.

    Average daily planetary A index declined from 10.9 to 7.7, while average mid-latitude A index changed from 7.9 to 6.1.

    Predicted solar flux is 68 on October 5-18...

    Continue reading...

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