Pilot's Guide

190-00663-02 Rev. B
Garmin G1000 Pilot’s Guide for the Hawker Beechcraft C90A/GT/GTi
337
HAZARD AVOIDANCE
Figure 6-60 The Blind Alley - Horizontal Scan
Inareas ofmultiple heavycells, usetheVerticalScan featurealong withantenna tiltmanagementto
examinetheareas.Remembertoavoidshadowedareasbehindtargets.
Figure 6-61 The Blind Alley
The Blind Alley at Close Range The Large Storm Behind
tornaDoes
Therearenoconclusiveradartargetreturncharacteristicswhichidentifyatornado.However,tornadoes
may be present if the following characteristics are observed:
•Anarrow,nger-likeportionextendsandinashorttimecurlsintoahookandclosesonitself.
•Ahook,whichmaybeinthegeneralshapeofthenumeral6(9inthesouthernhemisphere),especially
ifbrightandprojectingfromthesouthwestquadrant(northeastquadrantinthesouthernhemisphere)of
a major thunderstorm.
•V-shapednotches.
•Doughnutshapes.
Theseshapesdonotalwaysindicatetornadoes,andtornadoreturnsarenotlimitedtothesecharacteristics.
Conrmedradarobservationsoftornadoesmostoftenhavenotshownshapesdifferentfromthoseofa
normal thunderstorm display.