K7RA Solar Update

The following is quoted from ARRL News:


No sunspots appeared over the past week, and in the prior week there were only two days with sunspots, so the average daily sunspot number declined from 3.1 to 0.

Average daily solar flux nudged higher, but just barely, from 67.6 to 67.8.

Geomagnetic indicators were much lower this week, with average daily planetary A index retreating from 14.4 to 6.3, while the mid-latitude average went from 11 to 5.3.

Predicted solar flux for the next 45 days is 68. That’s correct — on every day for the next month and a half, October 10 through November 23, the solar flux is forecast to be 68.

A comprehensive K7RA Solar Update is posted Fridays on the ARRL website. For more information concerning radio propagation, visit the ARRL Technical Information Service, read “What the Numbers Mean…,” and check out K9LA’s Propagation Page.

A propagation bulletin archive is available. Monthly charts offer propagation projections between the US and a dozen DX locations.

Share your reports and observations.


Website: ARRL News

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