Garmin aera 795/796 Pilot’s Guide
190-01194-00 Rev. C
103
Hazard Avoidance
Overview GPS Navigation Flight Planning Hazard Avoidance Additional Features Appendices Index
signals that may or may not contain new weather data. It does not represent the rate
at which weather data is updated or new content is received by the GDL 39.
FIS-B Products
Expiration
Time
Update Interval
(Minutes)
Broadcast
Interval
(Minutes)
NEXRAD Composite
Reflectivity (CONUS)
60 minutes
~5 minutes precipitation
mode
10 minutes for clear air
15
NEXRAD Composite
Reflectivity (Regional)
60 minutes As Available 2.5
METAR 8 hours
1 minute (where available),
As Available otherwise
5
TAF 12 hours 8 hours 10
AIRMET 12 hours As Available 5
SIGMET 12 hours
As Available, then at 15
minute intervals for 1 hour
5
PIREP 8 hours As Available 10
Winds and
Temperatures Aloft
12 hours 12 hours 10
NOTAM (D)/FDC
(Including TFRs)
12 hours As Available 10
Weather Product Timing
NEXRAD
NEXRAD (NEXt-generation RADar), is a network of multiple high-resolution Doppler
radar sites that are operated by the National Weather Service (NWS). NEXRAD data
provides centralized meteorological information for the continental United States and
selected overseas locations. The maximum range of a single NEXRAD radar site is 250
nm. In addition to a wide array of services, the NEXRAD network provides important
information about severe weather and air traffic safety.
