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At what sustained wind speed does a hurricane warning get issued?

  1. 34 to 47 knots

  2. 48 to 63 knots

  3. 64 knots

  4. 65 knots or more

The correct answer is: 64 knots

A hurricane warning is issued when sustained wind speeds reach or exceed 64 knots, which is equivalent to 74 miles per hour. Wind speeds below this threshold may still be considered strong enough to warrant a tropical storm or storm warning, but not a hurricane warning. Options A and B refer to wind speeds below 64 knots, while option D specifies wind speeds above 65 knots.