The friendly Californian resort of La Jolla Shores is often referred to as the jewel of San Diego, and with its sandy beaches, clear Pacific waters and exceptional surfing and water sports, itâs easy to see why.
The minimum sustained wind speed for a storm to be considered a  hurricane is 74 mph. Hurricanes have been recorded with sustained  winds of up to 190 mph.
When one hears the phrase, wind shear is 20 knots over the hurricane, this typically refers to the difference in wind speed between 200 mb (the top of the troposphere, 40,000 feet altitude) and a layer where a pressure of 850 mb is found--about 5,000 feet above the surface.