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What is a Blizzard? InnisfilWeather.Com Blizzard A blizzard is produced by a combination of strong winds and falling or loose snow on the ground which severely reduces visibilities in blowing snow. Blizzards create very dangerous conditions which make travel dangerous due to whiteout conditions and drifting snow. Hazardous wind chills become an additional hazard for anyone stranded. A Blizzard Warning is issued when winds of 40 km/h or more, are expected to cause widespread reductions in visibilities to less than one kilometre, due to blowing snow, for at least four to six hours. Warnings are generally issued 12 to 24 hours in advance. In some regions a blizzard warning may be preceded by a Winter Storm Watch. Blizzard conditions generally do not last more than six to 12 hours, but have been known to last four to six days. Often blizzard conditions will develop suddenly after the passage of a storm system. Safety Tip: Be prepared to encounter sudden lower visibilities when travelling through open areas away from wind breaks such as trees and buildings. |
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