Winter Storms

Winter storms typically involve a sustained combination of heavy snowfall or freezing rain, cold temperatures and high winds often resulting in blizzards, unsafe driving conditions, property damage and/or utility disruptions.

Stay Informed
Environment and Climate Change Canada issues Winter Storm Watches and Warnings for Ontario based on the following criteria:
  • Winter Storm Watch: When conditions are favourable for the development of severe and potentially dangerous winter weather, including:
    • A blizzard;
    • A major snowfall (25 cm or more within a 24 hour period); and
    • A significant snowfall (snowfall warning criteria amounts) combined with other winter weather hazard types such as: freezing rain, rainfall (over coastal BC only), strong winds, blowing snow and/or extreme wind chill.
  • Winter Storm Warning: When severe and potentially dangerous winter weather conditions are expected, including:
    • A major snowfall (25 cm or more within a 24 hour period); and
    • A significant snowfall (snowfall warning criteria amounts) combined with other cold weather precipitation types such as: freezing rain, strong winds, blowing snow and/or extreme cold.
      Note: Blizzard conditions may be part of an intense winter storm, in which case a blizzard warning is issued instead of a winter storm warning.

You can receive local weather alert information by downloading the WeatherCAN app or you can check local weather and forecasts online at www.weather.gc.ca

Heavy snowfall and ice can make the roads treacherous. Check travel conditions at www.511on.ca before setting out on the road.

Before
  • Consider purchasing a weather radio or using a weather alerting service available to the public (e.g. WeatherCAN app).
  • Ensure you have and wear appropriate clothing for extreme winter weather including layers of lightweight clothing, mittens, waterproof insulated boots, and a toque or hat that covers your ears.
  • Winterize your home to retain heat such as:
    • Inspect attics, basements, windows, doors and any other areas where you suspect a draft or insulation deficiencies.
    • Install storm windows or cover windows with plastic as an additional insulation barrier.
    • Caulk or weather-strip door and windows.
    • Insulate your outdoor pipes or shut off water to them.
  • Have your HVAC and chimney inspected annually to ensure they are operating properly.
  • Make sure your home has a working carbon monoxide detector with a battery-powered back-up.
  • Trim branches hanging over your home or vehicle so they don’t get weighed down with snow and ice.
  • Make sure your vehicle(s) are in good condition ready for the winter season including snow tires, washer fluid, a well charged battery and a vehicle emergency kit.
  • To prepare for potential outages, consider installing:
    • alternative heating sources (e.g. wood-burning or natural gas fireplace),
    • a generator or other alternative power source (e.g. solar power).
  • Have shovels, salt, and snow removal supplies in an easily accessible place.
  • Create an emergency plan and identify an interior room least prone to drafts where you can shelter and close off from unoccupied rooms to retain more heat in the event of a power outage.
  • Plan for power outages as they are often associated with severe weather including winter storms. Charge devices (e.g. cell phones, laptops, tablets) prior to forecasted storms and consider installing an alternate power source (e.g. generator).
  • Build an emergency kit for your home and vehicle. Winter storms and dangerous driving conditions can leave you stranded on roadways for an extended period of time.
  • Review your homeowners or renters insurance to ensure you have adequate insurance for your property and personal belongings. Know what is covered, the level of coverage, and the deductible.
  • When conditions looks threatening, turn on your radio and monitor weather reports, or go to the WeatherCAN app or online at www.weather.gc.ca for more information.
During
  • Close doors and vents of rooms you are not using. Close blinds and curtains at night to help keep heat from escaping.
  • Run a trickle of water if you are concerned your pipes may freeze.
  • Avoid unnecessary travel. If you have to go out, make sure you are prepared for delays (e.g. fuel, vehicle emergency kit) and tell others of your route and anticipated arrival time.
  • When driving, increase your following distance as it takes longer to slow down and stop icy and snow-covered roads.
  • If you become stranded in your vehicle, run the engine for about 10 minutes per hour to run the heater and charge your cellphone. Open a window slightly to let fresh air in. Be sure the tail pipe is kept clear of snow and ice.
  • Pay attention to local media and alerting systems for current emergency information and instructions.
After
  • Check with authorities and weather forecasts for information on whether it’s safe to go outside and/or travel.
  • Watch out for flooding if there is a rapid snow melt.
  • Watch for slippery conditions, fallen power lines, trees and other debris.
  • Check your home or business for frozen pipes and leaks as water expands when it freezes.
  • Check on vulnerable family members, friends and neighbours who may require assistance.
  • If your home or business appears to have significant structural damage, do not enter unless you are sure it is safe to do so. Rely on professionals to clear your home or business for re-entry if you are unsure. Take photos of the building and its contents for insurance claims.
  • Check with authorities on how to dispose of damaged items from your home.
  • Evaluate your emergency plan and restock your emergency kit.
Additional Resources