I haven't noticed anything unusual on our radio lately, however similiar phenomenon to what you're describing does occur with lightning strikes and
other disturbed weather. Looks like several areas in Europe that have some convection/storms:
www.wunderground.com...
I'm not saying that weather is the cause of the radio interference you're talking about, just offering up something for you to examine and verify or
rule out as a source.
I'll pay more attention to our local radio and will post if I hear anything unusual.
Cheers
Edit to add: click on the "animate" in upper right corner of weather map to put it in motion.
[edit on 12-10-2008 by argentus]