Snowfall Warning. Blizzard warning a blizzard warning means that the following conditions are occurring or expected within the next 12 to 18 hours. General information about the zamg warning system published warnings for the parameters wind, rain and snow are based on statistical recurrence intervals of each meteorological.
Environment canada’s weather web site provides official weather warnings, current conditions, forecasts, and weather models, for public and marine areas in canada. 1) snow and/or blowing snow reducing visibility to 1/4. Heavy snowfall is expected in the centre and north of.