Definitions for "Weather warning"
alerts the public to storm conditions that may endanger lives and property.
MSC - Atlantic issues special weather warnings whenever expected weather conditions are such that the public welfare is endangered. They come under various headings, such as: storm or hurricane warnings, freezing rain warnings, and heavy snowfall warnings. See Warning Criteria and Terminology for a list of the warning criteria.
Announcements separate from and supplementary to routine forecasts issued to warn of weather conditions that may endanger lives, property and the welfare of the general public. Warnings are broadcast by the media, on the Weatheradio Canada System and by the Coast Guard. They are issued for snowstorms, blizzards, heavy blowing snow, heavy rains, frost, cold waves, freezing rain, severe thunderstorms and strong winds - according to thresholds established for local and regional public needs. In Vancouver a warning might be issued for an expected snowfall of 5 centimeters or more while in Halifax a warning would only be issued for 15 centimeters or more of snow.
Statement that dangerous weather is likely or is occurring. Take action.