General Navigation USCG Q#1086 (Set 34)

What is the direction of rotation of tropical cyclones, tropical storms and hurricanes in the Northern Hemisphere?

Official USCG Answer & Rule Citation

Correct Answer: Option A — Counterclockwise and inward

In accordance with Buys Ballot's law and meteorological principles, tropical cyclones in the Northern Hemisphere rotate counterclockwise and spiral inward toward the low-pressure center due to the combined effects of the pressure gradient force and Coriolis acceleration.

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