starman wrote:

Mark Keith wrote:

Nope. The wx has no real effect on HF or MW skywave. Very little on
ground wave for that matter except for maybe local quirks on the upper
HF bands.

That's what I thought too, but there is some growing evidence relating
the formation of sporadic E-layers and local weather, perhaps large
thunder storms.

Here are two websites on the subject:

http://www.amfmdx.net/propagation/Es.html (see 3.3 in the text)
http://www.anarc.org/naswa/issues/0796/tech0796.html

The evidence is so slight that it can safely be ignored except in some very
extreme and very short lasting effects.

That is to say that the weather will have very little if any effect upon SW
propagation.

When it comes to VHF frequencies and above it's an entirely different
ballgame.

Steve
Holland, MI
Drake R7, R8 and R8B