The K7RA Solar Update

Discussion in 'ARRL News Feeds' started by American Radio Relay, May 15, 2020.

  1. No sunspots appeared last week. The previous seven days had only one big sunspot group on one day, with a sunspot number of 35. Over the seven-day period this averaged out to a sunspot number of 5, so average daily sunspot numbers declined from 5 to 0 this week.

    Average daily solar flux also declined, by one point from 69.5 to 68.5.

    Geomagnetic indicators were quiet, with average daily planetary ...

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