Topband: Three day forecast of the Planetary Kp Index now available online

Mike Waters mikewate at
Thu Jul 30 18:43:51 EDT 2020

To add to this ...

*THE SOLAR MINIMUM SUPERSTORM OF 1903:* Don't let Solar Minimum fool you.
Superstorms are possible even during the "quiet" phase of the solar cycle.
A new study just published in the Astrophysical Journal Letters looks back
to October 1903. Solar activity was at a low point eerily similar to now
when one of the biggest storms in modern history erupted. Get the full
story at

73, Mike

On Fri, Jul 24, 2020, 1:30 PM <donovanf at> wrote:

> Daily variability of HF propagation ... especially during the four years
> closest to solar minimum ...

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