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    Interface InternationalSigmet

    A parsed international (ICAO format) SIGMET.

    International SIGMETs are used outside the CONUS, including Alaska, oceanic FIRs, and international airspace. They follow the ICAO standard format with FIR identification, validity periods, and standardized phenomenon descriptions. Valid for up to 4 hours, or 6 hours for volcanic ash and tropical cyclone SIGMETs.

    interface InternationalSigmet {
        additionalInfo?: string;
        altitudeRange?: AltitudeRange;
        areaDescription?: string;
        cancelledSeriesName?: string;
        cancelledSeriesNumber?: number;
        cancelledValidEnd?: DayTime;
        cancelledValidStart?: DayTime;
        cbTopFl?: number;
        cycloneName?: string;
        cyclonePosition?: Coordinates;
        firCode: string;
        firName: string;
        forecastPosition?: Coordinates;
        forecastTime?: DayTime;
        format: "INTERNATIONAL";
        intensityChange?: SigmetIntensityChange;
        isCancellation: boolean;
        isStationary?: boolean;
        issuingStation: string;
        movement?: SigmetMovement;
        observationStatus?: SigmetObservationStatus;
        observedAt?: DayTime;
        phenomena?: string;
        raw: string;
        seriesName: string;
        seriesNumber: number;
        tops?: SigmetTops;
        validFrom: DayTime;
        validTo: DayTime;
        withinNm?: number;
    }
    Index

    Properties

    additionalInfo? altitudeRange? areaDescription? cancelledSeriesName? cancelledSeriesNumber? cancelledValidEnd? cancelledValidStart? cbTopFl? cycloneName? cyclonePosition? firCode firName forecastPosition? forecastTime? format intensityChange? isCancellation isStationary? issuingStation movement? observationStatus? observedAt? phenomena? raw seriesName seriesNumber tops? validFrom validTo withinNm?

    Properties

    additionalInfo?: string

    Additional information not captured in other fields (e.g. "+/- 35KTS LLWS").

    altitudeRange?: AltitudeRange

    Altitude range of the phenomenon.

    areaDescription?: string

    Raw area description text (WI coordinates, NM-based areas, etc.).

    cancelledSeriesName?: string

    Series identifier of the SIGMET being cancelled (when isCancellation is true).

    cancelledSeriesNumber?: number

    Series number of the SIGMET being cancelled (when isCancellation is true).

    cancelledValidEnd?: DayTime

    End of the cancelled SIGMET's validity period (UTC).

    cancelledValidStart?: DayTime

    Start of the cancelled SIGMET's validity period (UTC).

    cbTopFl?: number

    Cumulonimbus top flight level (e.g. 500 for FL500).

    cycloneName?: string

    Name of the tropical cyclone (e.g. "FRANCINE", "KYLE").

    cyclonePosition?: Coordinates

    Geographic position of the tropical cyclone center.

    firCode: string

    ICAO identifier of the Flight Information Region (e.g. "PAZA", "KZMA").

    firName: string

    Name of the Flight Information Region (e.g. "ANCHORAGE FIR", "MIAMI OCEANIC FIR").

    forecastPosition?: Coordinates

    Forecast geographic position of the phenomenon (tropical cyclone center or volcanic ash cloud).

    forecastTime?: DayTime

    Forecast time (UTC) for the phenomenon position.

    format: "INTERNATIONAL"

    Discriminator indicating this is an international SIGMET.

    intensityChange?: SigmetIntensityChange

    Trend in intensity of the phenomenon.

    isCancellation: boolean

    True when this SIGMET cancels a previously issued SIGMET.

    isStationary?: boolean

    True when the phenomenon is stationary (STNR).

    issuingStation: string

    ICAO identifier of the issuing station (e.g. "PANC", "KNHC").

    movement?: SigmetMovement

    Movement of the phenomenon.

    observationStatus?: SigmetObservationStatus

    Whether the phenomenon is observed or forecast.

    observedAt?: DayTime

    Time (UTC) of observation.

    phenomena?: string

    Raw phenomena description string (e.g. "SEV TURB", "TC FRANCINE", "FRQ TS").

    raw: string

    The original raw SIGMET string as provided to the parser.

    seriesName: string

    Series identifier. US MWOs use NATO phonetic names (e.g. MIKE, INDIA); non-US MWOs may use single letters or other identifiers per ICAO conventions.

    seriesNumber: number

    Sequence number within the series.

    tops?: SigmetTops

    Cloud top altitude information (TOP FL### or TOP ABV FL###).

    validFrom: DayTime

    Start of the validity period (UTC).

    validTo: DayTime

    End of the validity period (UTC).

    withinNm?: number

    Radius in nautical miles from the cyclone center (e.g. 180 from "WI 180NM OF CENTER").

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