Cockpit Reference Guide

Garmin G1000 Pilot’s Guide for the Piper PA-46 Meridian
190-00763-02 Rev. A336
HAZARD AVOIDANCE
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS
EICAS
AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE
AFCS
ADDITIONAL
FEATURES
APPENDICESINDEX
SYSTEM
OVERVIEW
FLIGHT
INSTRUMENTS
EICAS
AUDIO PANEL
& CNS
FLIGHT
MANAGEMENT
HAZARD
AVOIDANCE
AFCS
ADDITIONAL
FEATURES
APPENDICESINDEX
WEATHER MAPPING AND INTERPRETATION
WEATHER DISPLAY INTERPRETATION
When evaluating various target returns on the weather radar display, the colors denote precipitation intensity
andratesshowninthetable.
Weather Mode Color Intensity
Approximate
Precipitation Rate
(in/hr.)
Black < 23 dBZ < .01.
Green 23 dBZ to < 32 dBZ .01 - 0.1.
Yellow 32 dBZ to < 41 dBZ 0.1 - 0.5
Red 41 dBZ to < 50 dBZ 0.5 - 2
Magenta 50 dBZ and greater > 2
Table 6-3 Precipitation Intensity Levels
Thunderstorms
Updraftsanddowndraftsinthunderstormscarrywaterthroughthecloud.Themoreseverethedrafts,the
greaterthenumberandsizeoftheprecipitationdroplets.Withthisinmind,thefollowinginterpretations
canbemadefromwhatisdisplayedontheweatherradar.Avoidtheseareasbyanextrawidemargin.
•Inareaswherethedisplayedtargetintensityisredormagenta(indicatinglargeamountsofprecipitation),
theturbulenceisconsideredsevere.
•Areasthatshowsteepcolorgradients(intensecolorchanges)overthinbandsorshortdistancessuggest
irregularrainfallrateandstrongturbulence.
•Areasthatshowredormagentaareassociatedwithhailorturbulence,aswellasheavyprecipitation.Vertical
scanningandantennatiltmanagementmaybenecessarytoidentifyareasofmaximumintensity.