Yes. Friction tends to slow the wind near the surface.
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Yes, wind speed in hurricanes typically increases with altitude. This increase in wind speed with altitude is known as the wind profile within the hurricane, with the strongest winds typically found at higher altitudes in the storm's structure.
The minimum wind speed for a storm to be considered a hurricane is 74 mph.
The fastest wind speed ever recorded in a hurricane was about 190 mph (305 km/h) in Hurricane Patricia in 2015.
No
Hurricanes are categorized based on their wind speeds, with a minimal wind speed of 74 mph (119 km/h) needed to be classified as a Category 1 hurricane on the Saffir-Simpson Hurricane Wind Scale. As the wind speeds increase, hurricanes are classified into higher categories (2-5) based on their sustained wind speeds.
The wind speed of Hurricane Sandy was measured to be about 110 mph at peak intensity.