{
  "operation": "GET /api/data/airsigmet",
  "summary": "Active domestic SIGMETs for icing hazard",
  "request": {
    "method": "GET",
    "url": "https://aviationweather.gov/api/data/airsigmet?hazard=ice&format=json"
  },
  "response": {
    "status": 200,
    "contentType": "application/json",
    "body": [
      {
        "airSigmetId": 12345,
        "icaoId": "KKCI",
        "receiptTime": "2024-01-04 13:55:00.000Z",
        "validTimeFrom": 1704373200,
        "validTimeTo": 1704387600,
        "alphaChar": "C",
        "hazard": "ICE",
        "severity": "MOD",
        "rawAirSigmet": "WAUS41 KKCI 041355\nSIERRA UPDATE 2 FOR ICING AND FRZLVL VALID UNTIL 042000\n...",
        "altitudeHi1": 18000,
        "altitudeLow1": 0,
        "movementDir": 270,
        "movementSpd": 25,
        "geometry": "POLYGON((...))"
      }
    ]
  }
}