I was just Skyping Forgottenman and he commented on the massive thunder there.
I remarked that at least that meant no snow and said I wondered why it never thundered before a snowstorm.
He answered that it did. Thundersnow.
At which point I had to look it up and sure enough, this is what I discovered thanks to Google:
snowfall accompanied by thunder and lightning.
“thundersnow happens in Iowa about once every winter”
Gobsmacked. How can I have never heard of this? Had any of you heard of it?