Pilot's Guide

Garmin G1000 Pilot’s Guide for the Tiger AG-5B190-00617-00 Rev. A
9-13
GDL 69/69A
RADAR COVERAGE – The display of Radar Cover-
age is always active when NEXRAD and ECHO
TOPS are selected and indicates the currently
available NEXRAD Radar coverage and ECHO
TOPS areas by showing the area in a grayish-
purple color where information is not being
collected. Areas where radar capability exists, but
is not active or is off-line, will not be shown as
available. Areas where radar coverage is not avail-
able will be shown in grayish-purple. The update
rate is every five minutes.
CLD TOP – press the CLD TOP softkey to show
the cloud top altitude determined from satellite
imagery. Refer to the legend for a description of
the CLOUD TOPS color coding. The update rate
is every 15 minutes.
LTNG – pressing the LTNG softkey shows the loca-
tion of cloud-to-ground lightning strikes. The
update rate is every five minutes.
NOTE: Strike location falls within a 2 km region.
Therefore, the exact location of the strike is not
displayed.
CELL MOV – pressing the CELL MOV softkey
shows the storm cells identified by the ground-
based system. The movement is depicted by an
arrow. The update rate is every 12 minutes.
SIG/AIR – pressing the SIG/AIR softkey shows
SIGMET and AIRMET information to advise
the pilot of potentially hazardous weather.
The
advisory covers an area of at least 3,000 square
miles at any one time. The update rate is every 12
minutes.
NOTE: SIGMETs are broadcast for hazardous
weather that is considered of extreme importance
to all aircraft. SIGMETs (acronym for “SIGnificant
METeorological information”) warn of the fol-
lowing weather hazards: severe icing, severe and
extreme turbulence, dust storms, sandstorms, or
volcanic ash lowering visibility to less than 3
miles. A Convective SIGMET (WST) is issued for
hazardous convective weather (such as torna-
does, thunderstorms, hail) and covers severe or
great turbulence, severe icing, and low-level wind
shear. A localized SIGMET is a significant weather
condition occurring at a localized geographical
position.
Opt Equipment_00617-00_0A.indd 13 7/12/2005 8:21:47 AM