Definition
SIGMET
A weather advisory issued concerning weather significant to the safety of all aircraft. SIGMET advisories cover severe and extreme turbulence, severe icing, and widespread dust or sandstorms that reduce visibility to less than 3 miles.
- See: AIRMET
- See: GRAPHICAL AIRMEN'S METEOROLOGICAL INFORMATION
- See: ICAO term SIGMET INFORMATION
- See: SAW
Source: FAA Pilot/Controller Glossary (verbatim from the Federal Aviation Regulations).