Pilot's Guide

190-00552-05 Rev. A
Garmin G1000 Pilot’s Guide for the Corvalis/Corvalis TT
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE
AFCS
ADDITIONAL
FEATURES
APPENDICES INDEX
293
HAZARD AVOIDANCE
Figure 6-9 Panning on the Weather Data Link (XM) Page
Flash Flood
Warning
Selected with
Map Pointer
Additional
Information on
Selected Item
NEXRAD
NOTE: The NEXRAD weather product cannot be displayed at the same time as terrain, echo tops, turbulence,
or icing data is displayed.
The National Weather Service (NWS) operates the WSR-88D, or NEXRAD (NEXt-generation RADar)
system,anextensivenetworkof156high-resolutionDopplerradarsystems.TheNEXRADnetworkprovides
centralizedmeteorologicalinformationforthecontinentalUnitedStatesandselectedoverseaslocations.The
maximumrangeofasingleNEXRADsiteis250nm.Inadditiontoawidearrayofservices,theNEXRAD
networkprovidesimportantinformationaboutsevereweatherandairtrafcsafety.
IndividualNEXRADsitessupplythenetworkwithradarimages,andtheimagesfromeachradarsitemay
arriveatthenetworkatdifferentratesandtimes.Periodically,theweatherdataprovidercompilestheavailable
individualsiteimagesfromthenetworktoformacompositeimage,andassignsasingletimetoindicatewhen
itcreatedtheimage.ThisimagebecomestheNEXRADweatherproduct.Individualimages--gatheredfrom
eachNEXRADsite--differinage,andarealwaysolderthanthedisplayedNEXRADweatherproductage.The
dataproviderthensendstheNEXRADdatatotheSiriusXMWeatherservice,whosesatellitestransmitthis
informationduringthenextdesignatedrefreshtimefortheNEXRADweatherproduct.
Becauseofthetimerequiredtodetect,assemble,anddistributetheNEXRADweatherproduct,thedisplayed
weather information contained within the product may be significantly older than the current radar synopsis
andmaynotdepictthecurrentweatherconditions.TheNEXRADweatherproductshouldneverbeusedasa
basis for maneuvering in, near, or around areas of hazardous weather regardless of the information it contains.