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What does HIWAS stand for?

HIWAS stands for Hazardous Inflight Weather Advisory Service

This definition appears somewhat frequently and is found in the following Acronym Finder categories:

  • Science, medicine, engineering, etc.

Samples in periodicals archive:

While my instructor listened to the Hazardous Inflight Weather Advisory Service (HIWAS) for weather updates, I was dodging thunder cells.