SIGMET
Significant Meteorological Information
glossary.index.last_updated_prefix April 20, 2026 · glossary.index.editorial_byline
glossary.index.h2_what_is
glossary.sigmet.definition
- TS
- Thunderstorms
- TURB
- Severe turbulence
- ICE
- Severe icing
- MTW
- Mountain wave
- VA
- Volcanic ash
glossary.index.h2_how_used
glossary.sigmet.how_its_used