Aviation Dictionary

Trough

In weather, an elongated area of low pressure with no rotative motion.

Dictionary Term

Trough

Definitions

In weather, an elongated area of low pressure with no rotative motion.
The low area between two wave crests.

References

Balloon Flying Handbook, Federal Aviation Administration, 2024
Seaplane, Skiplane, and Float Ski Equipped Helicopter Operations Handbook, Federal Aviation Administration, 2024