coyote calling in a snow storm ???

[Rocky Raab]

That's dead on. A nasty storm will have them holed up until it breaks, and then they'll be out en masse, cold and hungry. Either a food call or a territorial yote call will work after a storm.

Wind is the key to their activity during a storm. If it's windy, it's better to just forget the hunt - but be out there the minute it slacks off.

I'm a fair weather hunter, myself. But I have hunted and found them in foggy weather, quiet snowfall and bluebird weather, especially a warm snap after a storm.