Blizzard Warning- Issued for winter storms with sustained or frequent winds of 35 mph or higher with considerable falling and/or blowing snow that frequently reduces visibility to 1/4 of a mile or less. These conditions are expected to prevail for a minimum of 3 hours.
Blizzard warning Issued when falling or blowing snow is accompanied by winds of over 55 km (35 mi) per hour and reduced visibility.
Blocking system A cutoff cyclone or anticyclone that blocks the usual west-to-east progression of weather systems.
Blizzard Warning This product is issued by the National Weather Service when blizzard conditions are life threatening. The criteria for this warning varies from state to state.
12. blizzard warning
Issued for winter storms with sustained winds or frequent gusts of 35 miles per hour or greater and considerable falling and/or blowing snow reducing visibility to less than 1/4 mile. These conditions are expected to last at least 3 hours.
Ground Blizzard Warning: When blizzard conditions are solely caused by blowing and drifting snow.
A warning issued by Environment Canada's Meteorological Service (MSC) for hazardous weather conditions characterized by high winds, and a widespread reduction in visibility due to falling and/or blowing snow.
storm conditions of sustained winds or frequent gusts of 35 mph or more that cause major blowing and drifting of snow, reducing visibility to less than one-quarter mile for 3 or more hours. Extremely cold temperatures often are associated with dangerous blizzard conditions.
A ~ is issued if a combination of strong winds, reduced visibilities in snow or blowing snow and cold temperatures is expected to persist for four hours or more.
- A product issued by NWS local offices indicating that a particular weather hazard is either imminent or has been reported. A warning indicates the need to take action to protect life and property. The type of hazard is reflected in the type of warning (e.g., tornado warning, ~).
Blizzards are a rare occurrence on the west coast and in Atlantic Canada. The Environment Canada has listed the following general criteria for issuing ~s in Canada: visibility less than 1 kilometer, wind speeds greater than 40 kilometers per hour, high windchill values ...
See also: What is the meaning of Wind, Surface, Air, Storm, Thunder?