ENVIRONMENT CANADA: Flash Freeze & Winter Storm Warning active for High-Speed Corridors across Southern Ontario and Quebec.
Canada Severe Weather Alert Operations
Real-time atmospheric hazards, winter storm warnings, flash freeze criteria, and emergency preparedness advisories for all 10 provinces & 3 territories.
BLIZZARD & FLASH FREEZE WARNING
A fast-moving Arctic cold front colliding with moist Great Lakes air is generating rapid snow squalls, zero visibility, and immediate flash freeze conditions on roadways.
EXTREME ARCTIC WIND CHILL WARNING (-42°C to -48°C)
Siberian polar vortex core has displaced south across the Prairies. Extreme wind chills between -40°C and -48°C create dangerous frostbite conditions in minutes.
ATMOSPHERIC RIVER & HEAVY RAINFALL WATCH
A subtropical moisture plume is forecast to deliver 80 to 120 mm of rain to Coastal British Columbia with elevated freezing levels causing rapid snowpack melting in lower mountain basins.
FREEZING RAIN & ICE PELLET ADVISORY
A warm layer aloft is producing a 4 to 6-hour period of freezing rain with ice accumulation of 2 to 5 mm before changing over to light snow.
OFFSHORE NOR’EASTER GALE & SURGE WATCH
Intense maritime low tracking south of Sable Island will generate northeast storm-force winds up to 90 km/h with pounding surf and minor coastal flooding along south-facing coastlines.
Government of Canada 72-Hour Emergency Preparedness Guide
During severe blizzards and ice storms across Canada, utility power and highway access may be interrupted for up to 72 hours. Public Safety Canada recommends every household maintain an accessible emergency survival kit.
Four litres of water per person per day, plus canned food and energy bars.
Crank or battery-powered flashlight, spare batteries, and portable phone power bank.
Emergency thermal blankets, prescription medications, whistle, and dry wool socks.