Definitions

1. noun

A type of snowstorm characterized by a sudden strong drop in temperature, often causing the snow to fall heavily and violently.

“The forecast warned of a sissonne moving in overnight, so we decided to stock up on food and supplies.”

2. noun

A short, intense snowstorm, often with strong winds and heavy snowfall.

“The sissonne passed quickly, but left behind a thick layer of snow and a mess of branches and debris.”