Plain English Meaning

A WA, or AIRMET, is a weather warning aimed mainly at pilots of smaller aircraft. It tells you about widespread weather that's bad enough to matter — like moderate icing, moderate turbulence, strong surface winds, or large areas of low clouds and poor visibility — but not severe enough to trigger the more serious SIGMET warning.

Full Definition

An AIRMET (AIRmen's METeorological Information), identified by the product code WA, is an in-flight weather advisory issued by the National Weather Service to alert pilots of that may be hazardous to aircraft, particularly those of , , or otherwise weather-sensitive types, but at intensities below the requiring a SIGMET. cover moderate icing, moderate turbulence, of 30 or more, widespread areas of less than 1,000 feet and/or visibility less than 3 miles, and extensive .