What is a Tropical Revolving Storm ?

A tropical revolving storm or a TRS is a storm system with a low-pressure center, around which winds of gale force (34 knots or force 8) or more blow spirally inwards, anticlockwise in the Northern Hemisphere (NH) and clockwise in the Southern Hemisphere (SH).

TRS is common in various places in the world, but they can be called as below:

1. “Cyclones” is used in the Bay of Bengal and the Arabian Sea.
2. “Hurricane” is used on the western side of the North Atlantic and South Pacific.
3. “Cordonazo” is used on the eastern side of the North Pacific.
4. “Typhoon” is used on the western side of the North Pacific.
5. “Willy–willy” is used on the eastern side of the South Indian Ocean.