Snow squalls bring sudden, dangerous winter weather to parts of Ontario, prompting alerts and safety warnings.

Snow squalls are short, intense bursts of heavy snow with strong winds and sometimes lightning, lasting less than an hour, caused by cold air moving over warm Great Lakes or cold fronts. They can severely reduce visibility and create hazardous driving conditions, even in areas beyond traditional snowbelt regions like Toronto, depending on wind direction and speed. Environment Canada issues alerts for affected areas in central and northern Ontario, advising residents to stay indoors during extreme cold, protect against frostbite, and monitor weather updates.