SIGMET

{
  "id": "MLC-T-AVN-000891",
  "term": "SIGMET",
  "field": "Aviation and air traffic control",
  "definition": "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.",
  "abbreviation": "WS",
  "expansions": [
    "Significant meteorological information"
  ],
  "see_also": [
    "Airmen's meteorological information (AIRMET)",
    "Convective SIGMET",
    "CWA",
    "Graphical airmen's meteorological information",
    "SIGMET information [ICAO]",
    "SAW"
  ],
  "references": [
    "AIM",
    "FAA Pilot/Controller Glossary"
  ],
  "url": "https://mlchart.com/terminology/aviation/sigmet/"
}