Garmin G1000 Manual page 17

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 crew 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 broadcasted for hazardous
weather that is considered of extreme importance
to all aircraft. SIGMETs (acronym for "SIGnifi-
cant METeorological information") warn of the
following 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
greater turbulence, severe icing and low-level
wind shear. A localized SIGMET is a significant
weather condition occurring at a localized geo-
graphical position.
190-00498-00 Draft
190-00498-00_0A.indd 15
Garmin G1000 Hazard Avoidance Pilot's Guide for the Cessna Citation Mustang
NOTE: AIRMETs are broadcast for weather
phenomena that potentially affect all aircraft.
AIRMET (acronym for "AIRman's METeorological
information) gives valuable information about
the following conditions: moderate icing, mod-
erate turbulence, sustained winds 30 knots or
greater at the surface, widespread area with a
ceiling of less than 1,000 feet and/or visibility
less than 3 miles and extensive obscurement of
mountains. These are important to light aircraft,
that have limited flight capabilities due to lack
of equipment and/or instrumentation.
WEATHER
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3/1/2005 10:33:44 AM