Anyone who says you can't revive a dead horse with a good, firm beating
has not met this group

I suspect that there are several points of agreement with the majority
of the group, however not everyone will agree, heck I may choose to
disagree with something right after I write it......

That dry wind will cause high voltage charging -and arcing- of
insulated antennas and static noise, especially on long wires - that
this is mostly friction charging, a similar mechanism to rubbing silk
on glass, though charged body impact of dust may be relevant...
That dry, falling/blowing snow causes extreme levels of static noise on
insulated antennas - by mixed phenomenon of friction static and
charged body impact...
That static noise builds up as a rain front approaches, with or without
associated wind... That this static noise is separate from lighting
discharge impulses....
That lightning discharges cause noise - inductive noise...
That rain causes static noise on insulated antennas - charged body
impact primarily, I don't know about friction charge...
That heavy rain 'may' lessen associated static noise....
I haven't personally experienced this - is it the magnitude of the
rainfall or the fact that the highly charged front has passed on by and
the falling drops are now less charged?
That a grounded tower with an antenna stack can have the top antenna
experience heavy static noise while lower antennas will have
significantly less static roar...
my opinion is that coronal discharge from the top antenna elements is
inducing noise into the top antenna circuit, and that the coronal flow
that would have occurred off the lower antenna elements is suppressed
and drained to the top antenna by the differential voltage on the
higher antenna

So, in the end it may be that the charging of the antenna circuit by
either friction or charged body impact causes less noise than the
subsequent coronal flow back off the highly charged antenna body... We
know that the antenna is a "convertor", that is it converts a moving
electron departing the antenna into a photon - and vice versa - causing
an RF signal in the process...
Certainly, this topic of the role that coronal discharge v/s the
charging mechanism plays in antenna noise would make a good
dissertation subject for a PhD thesis... Doctoral candidates out there,
hint, hint!...

denny