Whats the difference between a snow squall and a blizzard?
There are a number of differences between a snow squall and a blizzard. A blizzard generally meets these conditions: — Winds must be sustained at 40 km/h — Visibility is less than 1 km due to falling or blowing snow — The wind chill value is greater than 1600 watts per metre squared, or the temperature is at least -25C or colder — The above conditions must be met for a minimum of four hours — There does not need to be snow falling during this event For a snow squall, the main difference is the duration of the event and that falling snow is required with the rest of the above conditions. A squall is generally defined as the sudden onset of strong winds of at least 22 knots or around 39 km/h for approximately one minute.
