The K7RA Solar Update

Big increase in solar activity this week, with average daily sunspot number rising from 129 to 215.9, and solar flux from 176.6 to 226.5.

Fourteen new sunspot groups emerged. Two were on July 11, one on July 12, three on July 13, one on July 14, two more on July 15, three more on July 16 and two more on July 17.

On Thursday (after the reporting week) the daily sunspot number was 276, the highest value for cycle 25, according to Jon Jones, N0JK. A new sunspot group appeared tha ... Читать дальше »