Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A weather advisory concerning the safety of all aircraft.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Abbreviation of Significant Meteorological Information.

Examples

  • What those are, a SIGMET is a significant, severe meteorological event.

    CNN Transcript Feb 16, 2009

  • They had -- I'm sorry, on the SIGMET, the turbulent SIGMET, they had Victor 6.

    CNN Transcript Feb 16, 2009

  • There was a SIGMET in effect that night, but it was for turbulence, it was not for icing.

    CNN Transcript Feb 16, 2009

  • Or don't US SIGMETs end with a cancelling SIGMET, like this.

    Cockpit Conversation

  • SIGMETs are issued for ICAO-mandated hazardous conditions and AIRMETs for country specific hazards that don't meet SIGMET-nastiness criteria.

    Cockpit Conversation

  • In Canada, the boundaries of a SIGMET or AIRMET are given in lat-long coordinates, with directions and distances to airports in parentheses, so you don't need to know where YQT is to find it on your chart.

    Cockpit Conversation

  • You can see that the format of the SIGMET above is pretty much like the US one, but with lat-long coordinates and spelled out place names in place of airport identifiers.

    Cockpit Conversation

  • An AIRMET (it may have been a SIGMET, they're identical in format) warns of a hazardous condition affecting an area.

    Cockpit Conversation

  • In addition, the en-route SIGMETS and Flight Plan Guidance provide forecasts for turbulence, convection, and icing, as well as up-to-the-minute Auto Plotted SIGMET and AIRMET charts showing boundaries of in-flight advisories.

    Aero-News Network

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