At what wind speed is a storm classified as a tropical storm?

A storm is classified as a tropical storm when it reaches sustained wind speeds of 39 to 73 MPH. This classification indicates a significant increase in wind speed compared to tropical depressions, which have wind speeds of less than 39 MPH.

Tropical storms are an essential category in the system used to classify tropical weather systems, indicating a stage where the storm has organized enough to present a more serious risk to life and property than lower categories. As wind speeds continue to rise beyond 73 MPH, the storm would be classified as a hurricane, demonstrating the increasing severity and potential impacts of the storm. Understanding these classifications helps in making decisions regarding preparedness and response strategies in the event of a storm.