Coast Guard Exams
Question 1073Navigation General70% to pass

What level of development of a tropical cyclone has a hundred mile radius of circulation, gale force winds, less than 990 millibars of pressure and vertically formed cumulonimbus clouds?

AI Explanation
The correct answer is A) A tropical storm. A tropical storm is a tropical cyclone with a well-defined circulation and maximum sustained winds between 39-73 mph (34-63 knots). The characteristics described in the question, such as a hundred mile radius of circulation, gale force winds, low pressure, and vertically formed cumulonimbus clouds, are all consistent with a tropical storm. In contrast, a tropical depression has maximum sustained winds below 39 mph, a tropical disturbance has an even less organized circulation, and a typhoon is the term used for a tropical cyclone in the northwest Pacific Ocean.

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