tropical disturbance

noun

, Meteorology.

1. a very weak, or incipient, tropical cyclone.

Example Sentences

It starts as a tropical disturbance, but throw in cyclonic circulation — that is, counterclockwise motion in the northern hemisphere, clockwise in the southern hemisphere — and faster wind speeds, and you have a tropical depression.

From Los Angeles Times

A tropical disturbance with a 60% chance of cyclone formation is trailing Bret.

From Seattle Times

A tropical disturbance that is trailing Bret has a 50% chance of formation, according to the National Hurricane Center.

From Seattle Times

U.S. weather forecasters were warning about a new tropical disturbance, expected to move north across the Gulf of Mexico next week that could bring more rains to Louisiana.

From Reuters

U.S. weather forecasters were warning about a new tropical disturbance, expected to move north across the Gulf of Mexico next week that could bring more rains to Louisiana.

From Reuters