What classification is given to a tropical cyclone with winds of 64 knots or higher?

A tropical cyclone is classified based on its sustained wind speeds, and when these winds reach 64 knots (which is approximately 74 miles per hour), the system is designated as a hurricane. This classification indicates that the storm has developed sufficiently to have the potential for significant damage and impacts, distinguishing it from less intense systems.

A tropical depression is the initial stage of a tropical cyclone, characterized by winds of less than 33 knots. A tropical storm, having winds ranging from 34 to 63 knots, is the stage just before a system becomes a hurricane. Thunderstorms are common weather phenomena but do not involve the organized circulation required to be classified as a cyclone. Thus, the proper classification for a system with winds of 64 knots or higher is a hurricane, indicating its severity and potential for destructive impact.