Garmin aera 795/796 Pilot’s Guide190-01194-00 Rev. C 103Hazard Avoidance Overview GPS Navigation Flight Planning Hazard Avoidance Additional Features Appendices Indexsignals that may or may not contain new weather data. It does not represent the rateat which weather data is updated or new content is received by the GDL 39.FIS-B ProductsExpirationTime Update Interval(Minutes)BroadcastInterval(Minutes)NEXRAD CompositeReflectivity (CONUS) 60 minutes~5 minutes precipitationmode10 minutes for clear air15NEXRAD CompositeReflectivity (Regional) 60 minutes As Available 2.5METAR 8 hours 1 minute (where available),As Available otherwise 5TAF 12 hours 8 hours 10AIRMET 12 hours As Available 5SIGMET 12 hours As Available, then at 15minute intervals for 1 hour 5PIREP 8 hours As Available 10Winds andTemperatures Aloft 12 hours 12 hours 10NOTAM (D)/FDC(Including TFRs) 12 hours As Available 10Weather Product TimingNEXRADNEXRAD (NEXt-generation RADar), is a network of multiple high-resolution Dopplerradar sites that are operated by the National Weather Service (NWS). NEXRAD dataprovides centralized meteorological information for the continental United States andselected overseas locations. The maximum range of a single NEXRAD radar site is 250nm. In addition to a wide array of services, the NEXRAD network provides importantinformation about severe weather and air traffic safety.
