Definitions

1. noun

A weather phenomenon characterized by a low-pressure system under a high-pressure system, often resulting in strong winds and unstable weather.

“The forecast predicted an underboom that would bring heavy rain to the area.”

2. noun

A type of low-pressure system that forms under a high-pressure system, often leading to severe weather conditions.

“The meteorologist warned of an underboom that could cause flash flooding in the nearby cities.”