A hurricane warning or tropical storm warning is issued by the National Hurricane Center in the United States a. to areas expected to experience hurricane-force or tropical storm-force winds within the next 48 hours. b. to areas expected to experience hurricane-force or tropical storm-force winds within the next 12 hours. c. to areas expected to experience hurricane-force or tropical storm-force winds within the next 24 hours. d. to areas expected to experience hurricane-force or tropical storm-force winds within the next 36 hours