A snow squall is a sudden heavy snowfall that consists of strong and gusty surface winds.
It is similar to a blizzard but is localized.
“Snow squalls cause weather conditions to vary considerably; changes from clear skies to heavy snow within just a few kilometres are common,” says Environment Canada. “Travel may be hazardous due to sudden changes in the weather.”
The website says that a vigorous cold front could produce snow squalls over several areas today.
The watch alert was posted on Wednesday morning and is in effect for the following areas:
- Châteauguay – La Prairie area
- Longueuil – Varennes area
- Montreal Island area
Wind gusts could reach speeds of 57 km/h, according to The Weather Network.
Environment Canada urges citizens to monitor weather alerts and updates and to be safe when travelling outside.