top of page

Science fact of the day: Tropical cyclones become tropical storms once they hit 39 mph

Tropical cyclones present with an organized system of clouds and thunderstorms with a defined circulation and maximum sustained winds of 38 mph or less.

At this point, they are classified as “tropical depressions.” When they reach wind speeds of at least 39 mph, they are then called tropical storms and are assigned a formal name.

38 views0 comments


bottom of page