What is the minimum wind velocity for a storm to be classified as a typhoon?

A storm is classified as a typhoon when it reaches a minimum wind velocity of 64 knots (which is equivalent to 74 miles per hour or 119 kilometers per hour). This classification falls under the broader category of tropical cyclones, which include hurricanes and tropical storms, depending on the region and specific wind speed thresholds.

The threshold of 64 knots is significant because it represents the point at which the storm exhibits characteristics severe enough to warrant this classification, indicating that it possesses a well-developed structure and strong sustained winds. This classification helps meteorologists and researchers communicate the potential impact and danger posed by the storm, facilitating better preparedness and response efforts.

The options that suggest wind velocities lower than 64 knots do not meet the established criteria for typhoon status, as such storms are considered tropical storms or weaker systems. Understanding the classification thresholds is essential for interpreting weather forecasts and warnings related to severe weather phenomena like typhoons.