An organized system of strong thunderstorms with top sustained winds of 39mph to 73mph.
Tropical storms can quickly develop into hurricanes.
Storms are named when they reach tropical storm strength. Tropical storm conditions are possible in the specified area of the watch, usually within 36 hours. Tropical storm conditions are expected in the specified area of the warning within 24 hours. An intense tropical weather system with a sustained wind speed of 74mph or higher. A dome of sea water up to about 20 feet high that arrives with a hurricane, and can affect more than 100 miles of coastline.