May 19, 2025

This Week in Amateur Radio

North America's Premiere Amateur Radio News Magazine

sun

via the ARRL: The K7RA Solar Update

Read more at ARRL.org

Eight new sunspot groups emerged over the past week.

Two appeared on August 30, three more on August 31, another two on
September 2 and one more on September 4.

Average daily sunspot number declined from 177.1 to 155.3, while
average daily solar flux barely changed from 229 to 230.3.

Spaceweather.com reported the average daily sunspot number for
August was 200, the highest monthly average in the past…

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