A gale warning is an advisory or
warning issued by the local competent
authority in maritime countries about the
existence of winds of
gale force or above or the imminent
occurrence of gales at sea. The purpose of
gale warnings is to allow shipping to take
precautionary actions to ensure their safety
at sea.
In the United States by the National Weather Service to areas experiencing, or about to experience, winds within the range of 39 to 54 miles per hour (or approximately 34 to 47 knots).