A Frost Advisory in Canada is issued when temperatures are expected to fall near or below freezing during the growing season, creating conditions that may damage or kill frost-sensitive plants and crops. Frost can develop when surfaces cool enough for water vapour to form ice crystals. Plants, gardens and agricultural crops may be damaged when … Read more
A Freezing Drizzle Advisory in Canada is issued when freezing drizzle is expected to create icy surfaces and hazardous travel conditions. Freezing drizzle consists of small liquid water droplets that freeze when they come into contact with cold surfaces. This can create a thin, difficult-to-see layer of ice on roads, sidewalks, parking lots and other … Read more
A Fog Advisory in Canada is issued when fog is expected to significantly reduce visibility and create hazardous travel conditions. Fog consists of tiny water droplets suspended near the ground. When fog becomes sufficiently dense, it can make roads, vehicles, buildings and other objects difficult to see. Driving can become particularly hazardous because visibility may … Read more
A Blowing Snow Advisory in Canada means strong winds are expected to lift loose snow from the ground, reducing visibility and creating hazardous travel conditions. Blowing snow can occur during active snowfall or after the snow has stopped. When strong winds move loose snow across roads and through the air, visibility can quickly decrease and … Read more
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
A Snow Squall Warning in Canada means intense, localized snowfall is expected to create hazardous conditions, including sudden reductions in visibility and rapidly accumulating snow. Snow squalls can cause weather and road conditions to change within minutes. Drivers may travel from clear conditions into heavy snow and near-zero visibility over a relatively short distance, making … Read more
A Snowfall Warning in Canada means significant snowfall is expected to create hazardous conditions and potentially serious impacts. Heavy snow can cover roads, reduce visibility, disrupt transportation and make outdoor travel difficult or dangerous. Environment and Climate Change Canada issues Snowfall Warnings when severe weather is happening or expected to happen. Under Canada’s colour-coded weather … Read more
A Severe Thunderstorm Warning in Canada means a severe thunderstorm is occurring or expected to occur and may produce hazardous conditions such as damaging winds, large hail or heavy rainfall. Environment and Climate Change Canada issues Severe Thunderstorm Warnings when severe weather is happening or expected to happen. Under Canada’s colour-coded weather alert system, Severe … Read more