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Severe weather bulletins are issued as a watch or a warning, depending on the risk or severity of the event. Watches are issued when conditions are favourable for the development of severe weather, but the occurrence, location, and/or timing is still too uncertain to issue a warning. The target lead time for severe thunderstorm watches is ...
In 1971, the weather service was moved to Environment Canada, a new Federal Department. The Weather Centrals became "Weather Centres". The newly renamed Prairie Weather Centre (PrWC) still operated out of Winnipeg and its area of responsibility was the provinces of Saskatchewan and Manitoba and Northwestern Ontario.
The Meteorological Service of Canada (MSC; French: Service météorologique du Canada – SMC) is a branch of Environment and Climate Change Canada, which primarily provides public meteorological information and weather forecasts and warnings of severe weather and other environmental hazards.
An extreme cold warning is a weather warning issued by Environment and Climate Change Canada (ECCC) and by the United States' National Weather Service (NWS) to inform the public about active or imminent severe cold temperatures in their local region. In April 2014, ECCC replaced the "wind chill warning" with an "extreme cold warning."
The first significant lake-effect snow event is well underway across the Great Lakes and interior Northeast, and AccuWeather meteorologists continue to warn of additional heavy snow remaining in ...
In Canada, governmental weather warnings and watches are issued by the Environment Canada.Environment Canada defines an advisory as "an alert to cover a wide array of deteriorating weather conditions," a watch as "when conditions favour that severe weather forming" and a warning as "severe weather is actually occurring or is imminent."
Environment and Climate Change Canada issues severe thunderstorm warnings through regional offices of the Meteorological Service of Canada based in Vancouver, Edmonton, Winnipeg, Toronto, Montreal and Dartmouth for specified municipalities and census subdivisions, sometimes including areas adjacent to a particular warned thunderstorm that are ...
Both severe and significant severe events warrant a severe thunderstorm warning from the United States National Weather Service (excludes flash floods), the Environment Canada, the Australian Bureau of Meteorology, the Meteorological Service of New Zealand and the Meteorological Office UK, if the event occurs in those countries.