When the wind speed is greater than 74 miles per hour, it is considered a hurricane, category one.when the wind exceed 119 km/h the storms is classified as hurricane.
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Tropical storms become hurricanes when sustained wind speeds reach or exceed 74 mph (119 km/h). Additionally, warm ocean waters, low wind shear, and high humidity are factors that contribute to the development and strengthening of hurricanes.
In order to become a hurricane a tropical storm needs to have sustained wind speeds of 75 mph or more.
Sustained winds speed. When a tropical storm's wind speed reaches 74 mph it is considered a hurricane.
The determining factor is the sustained wind speed. If the tropical system has sustained winds of less than 39 miles per hour, then it is a tropical depression. If sustained winds are in the range of 39 to 73 mph, then it is a tropical storm. If sustained winds are 74 mph or faster, then it is a hurricane.
A hurricane forms when a low-pressure system over warm ocean waters experiences sustained wind speeds of at least 74 mph. Factors such as warm sea surface temperatures, atmospheric instability, and low wind shear can contribute to the development of hurricanes.
A category 3 hurricane is determined by sustained wind speeds of 111-129 mph (178-208 km/h). These wind speeds can cause significant damage, including well-built framed homes that can sustain major roof and siding damage.
The amount and distribution of precipitation is the main factor that distinguishes wet tropical climates from tropical wet and dry climates. Wet tropical climates have high and consistent rainfall throughout the year, while tropical wet and dry climates have distinct wet and dry seasons.
Wind speed is the speed at which air moves from one place to another. Wind speed is a critical factor in determining the intensity of a hurricane, as higher wind speeds are associated with more powerful and destructive storms. Hurricane categories are based on the maximum sustained wind speed of the storm.