center weather advisory

Also found in: Acronyms.

center weather advisory (CWA)

An unscheduled weather advisory issued by center weather service unit meteorologists for ATC (air traffic control) use to alert pilots of existing or anticipated adverse weather conditions within the next two hours. A CWA may modify or redefine a SIGMET (significant meteorological information).
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
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