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A blizzard is a type of severe storm. To be officially labeled a blizzard, a storm must be characterized by winds of 35 miles per hour or greater, visibility of 1/4 mile or less for at least 3 hours and low temperatures.[1] To be a severe blizzard, a storm must feature temperatures of 10° F or lower, winds of 45 miles per hour or more, and very low visibility.[2]


  1. Glossary, retrieved Feb. 1, 2011.
  2. Glossary, retrieved Feb. 1, 2011.