4-60Garmin G500H Pilot’s Guide 190-01150-02 Rev. JForewordSec 1SystemSec 2PFDSec 3MFDSec 4HazardAvoidanceSec 5AdditionalFeaturesSec 6Annun.& AlertsSec 7SymbolsSec 8GlossaryAppendix AAppendix BIndex4.7.13 XM SIGMETs and AIRMETsSIGMETs (SIGnificant METeorological Information) and AIRMETs(AIRmen’s METeorological Information) are broadcast for potentially hazardousweather considered of importance to aircraft. A Convective SIGMET is issuedfor hazardous convective weather. A localized SIGMET is a significant weathercondition occurring at a localized geographical position.When enabled, SIGMET/AIRMETs advise the pilot of potentially hazardousweather to all aircraft. SIGMET/AIRMET data covers icing, turbulence, dust,and volcanic ash as issued by the National Weather Service. The update rate isevery 12 minutes.Figure 4-40 XM Weather - AIRMETsWhen enabled, the following AIRMETs are available for display:• Icing• Turbulence• IFR conditions• Mountain obscuration• Surface winds
