Weather Warnings

A Rainfall Warning is issued when significant rainfall is expected to create hazardous conditions, including flooding, water accumulation and difficult travel.

A Freezing Rain Warning is issued when freezing rain is expected to create hazardous ice accumulation on roads, sidewalks, trees, power lines and other surfaces.

An Extreme Cold Warning alerts you when extremely cold temperatures or very low wind chill values are expected to create dangerous conditions.

A Heat Warning is issued when temperatures or Humidex values are forecast to reach regional thresholds associated with increased health risks, typically for at least two days.

A Blizzard Warning is issued when strong winds and snow or blowing snow are expected to cause widespread visibility of 400 metres or less.

An Air Quality Warning is issued when wildfire smoke or other pollutants cause air quality to reach levels that may pose a risk to human health. Learn what triggers an Air Quality Warning in Canada, how the Air Quality Health Index (AQHI) is used, and what steps you can take to reduce your exposure.

A Snow Squall Warning is issued when intense bursts of snow, strong wind gusts, and sudden whiteout conditions are expected or occurring. Snow squalls can rapidly reduce visibility to near zero and create dangerous travel conditions, even though they typically last less than an hour.

A Winter Storm Warning in Canada means severe winter weather is expected to create hazardous conditions and potentially significant impacts. A winter storm may bring a combination of heavy snow, freezing rain, strong winds, blowing snow and other dangerous conditions. Environment and Climate Change Canada issues Winter Storm Warnings when severe weather is happening or … Read more

A Wind Warning in Canada means strong winds are expected to create hazardous conditions and potentially significant impacts. High winds can damage trees, buildings and power lines, cause power outages, create dangerous travel conditions and turn loose objects into flying debris. Environment and Climate Change Canada issues Wind Warnings when severe weather is happening or … Read more

A Tornado Warning in Canada means a tornado is occurring or expected to occur and people in the affected area should take immediate action to protect themselves. Tornadoes can produce extremely strong winds, flying debris and severe damage to buildings, vehicles, trees and infrastructure. Conditions can develop and change rapidly, leaving people with limited time … Read more