Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock () or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.




Search our library’s catalog with this term

A blizzard is defined by the U.S. National Weather Service as winds over 16 m s-1 [35 mph] and falling or blowing snow causing visibility less than 400 m lasting for at least 3 h.

Used for:

  • Snow Storms


Search again