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1 day ago · It doesn't take a major winter storm to cause serious travel problems in winter. Snow squalls and light snow events are often problematic. Freezing drizzle, freezing fog and flash freezes ...
- Blizzard
- Freezing Rain and Ice Pellets
- Ice Fog
- Rain
- Snow
- Wind Chill and Cold Temperatures
- Smog
- Winter Storm
A blizzard occurs when strong winds and heavy or blowing snow combine to cause low visibility. In whiteout conditions created by blizzards, people have become lost even when going only short distances. In Canada, the region that experiences the most hours of blizzard conditions extends from Resolute, Nunavut to Churchill, Manitoba.
Freezing rain or freezing drizzle is precipitation that falls in liquid form at first, but then falls through a layer of cold air. If this cold air layer is thick enough and the air temperature is below freezing, the precipitation freezes on contact with objects on the ground that are below freezing temperature, forming a coating of ice on its surf...
Unlike regular fog, which reduces visibility due to suspended water droplets, ice fog reduces visibility due to suspended ice crystals. Ice fog occurs at very cold temperatures and is rare at temperatures warmer than -30 °C. Ice fog can form very quickly in the right conditions and has been known to develop immediately after a plane’s take-off. Dri...
Rain in the winter can have serious impacts when it falls on a snowpack or on frozen ground, as the increased runoff can lead to flooding. When heavy rainfall is expected that could contribute to localized or downstream flooding and other hazardous conditions, Environment and Climate Change Canada issues a rainfall warning. For some areas of the co...
Although it can snow anywhere in Canada during the winter, the amount of snowfall varies greatly from region to region. It snows less in the North and the interior plains because the air is very dry. Along the west coast of the country, precipitation falls more often as rain, because of the warming effect of the Pacific Ocean. Moving inland, snowfa...
Wind chill is when the wind makes cold temperatures feel even colder. Environment and Climate Change Canada’s wind chill index will tell you the combined cooling effect of these factors on the human body. It uses temperature-like units to liken the current conditions to how cold your skin would feel on a calm day. Cold temperatures can also be haza...
Smog is not just a summertime concern. It can also occur in the winter, often in communities where wood is used for home heating. Winter smog is made of fine airborne particles, mainly from wood smoke, traffic and road salt. These pollutants can build up in the local area during cold weather, when there is little wind to disperse the particles. Thi...
Winter storms are large-scale weather systems that measure hundreds of kilometres across. They are called extratropical cyclones because they form and develop outside of the tropics. These storms gather their energy from the temperature and moisture differences across the boundary where different air masses come together. The larger the differences...
A recent weather alert about freezing fog sparked a kerfuffle on social media. This phenomenon is one of the more dangerous winter hazards, and AccuWeather meteorologists say there are several key ...
Freezing fog is fog that forms when the temperature at the surface is at or below the freezing mark (32 degrees Fahrenheit). “In addition to the hazard of reduced visibility that comes with fog ...
Sep 17, 2020 · Either way, freezing fog is bad news since it’s a hidden hazard. Freezing Fog vs Ice Fog. While freezing fog is composed of very cold tiny liquid droplets floating in the air, ice fog is made up of tiny ice crystals suspended in the air. Ice fog occurs in colder climates where the temperature is below 14 degrees.
Jan 20, 2022 · The dangers of freezing fog. The danger from freezing fog occurs when it makes contact with surfaces – that’s when it actually freezes. The problem comes from the surfaces it makes contact with: Trees, stairs, walkways, rails, cars, and roads. Freezing fog creates a layer of ice that is so thin it’s practically transparent.
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Feb 15, 2022 · Fog typically forms when there's cool air over a warm, moist surface such as a body of water or damp soil. However, freezing fog occurs when the air temperature is below freezing and the water ...
