thundersnow
n.— «The storm did come with a novelty act as residents were treated to a rare meteorological phenomenon called thundersnow, which is caused from the upward motion of a cold front when temperatures are near freezing. And that thunder folks heard on Friday morning was nearby, for the snowfall acts as an acoustic suppressor of the thunder. » —“Snow surprise” by Bob Fenske Forest City Summit (Iowa) Nov. 14, 2006. (source: Double-Tongued Dictionary)
Further reading
After our conversation about nighttime wakefulness, a Sacramento, California, woman shares the funny story behind the term she and her husband use for that phenomenon: squeegee. This is part of a complete episode.
Related
Ribbon fall. Gallery forest. You won’t find terms like these in most dictionaries, but they and hundreds like them are discussed by famous writers in the book Home Ground: A Guide to the American Landscape. The book is an intriguing collection...