Garmin G1000 Manual

190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850317
HAZARD AVOIDANCE
2) Select Weather Legend and press the ENT Key.
3) Turn the FMS Knob to scroll through the legends if more are available than fit in the window.
4) To remove the Legend Window, select the LEGEND Softkey, the ENT or the CLR Key, or press the FMS Knob.
Additional	information	about	the	following	can	be	displayed	by	panning	over	the	display	on	the	map:
•	 Echo
The	map	 panning	 feature	is	enabled	 by	pressing	 the	RANGE...

Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04  Rev. A318
HAZARD AVOIDANCE
NEXRAD
 NOTE:  NEXRAD data cannot be displayed at the same time as terrain, echo tops, turbulence, or icing data 
is displayed.
WSR-88D,	 or	NEXRAD	 (NEXt-generation	 RADar),	is	a	network	 of	158	 high-resolution	 Doppler	radar	
systems	that	are	operated	 by	the	 National	 Weather	Service	(NWS).	 	 NEXRAD	 data	provides	 centralized	
meteorological	 information	for	the	 continental	 United	States	and	selected...

190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850319
HAZARD AVOIDANCE
Displaying NEXRAD weather information:
1) Select the MAP Softkey (for the PFD Inset Map, select the INSET Softkey).  This step is not necessary on the 
Weather Data Link (XM) Page.
2) Select the NEXRAD Softkey.
Composite	data	from	 all	the	 NEXRAD	 radar	sites	in	the	 United	 States	is	shown.		 This	data	is	composed	 of	
the	maximum	 reflectivity	 from	the	individual	 radar	sweeps.	 	 The	display	 of	the...

Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04  Rev. A320
HAZARD AVOIDANCE
The	different	 NEXRAD	 echo	intensities	 are	measured	 in	decibels	 (dB)	relative	 to	reflectivity	 (Z).		NEXRAD	
measures	 the	radar	 reflectivity	 ratio,	or	the	 energy	 reflected	 back	to	the	 radar	 receiver	 (designated	 by	the	
letter	Z).		The	value	of	Z	increases	as	the	returned	signal	strength	increases.
neXRaD limitatiOns
NEXRAD	radar	images	may	have	certain	limitations:
•	 NEXRAD	 base	reflectivity	 does...

190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850321
HAZARD AVOIDANCE
The	following	may	cause	abnormalities	in	displayed	NEXRAD	radar	images:
•	 Ground	clutter
•	 Strobes	and	spurious	radar	data
•	 Sun	strobes	(when	the	radar	antenna	points	directly	at	the	sun)
•	 Interference	from	buildings	or	mountains,	which	may	cause	shadows
•	 Metallic	dust	from	military	aircraft,	which	can	cause	alterations	in	radar	scans
neXRaD limitatiOns (canaDa)
•	 Radar	coverage	extends	to	55ºN.
•	 Any...

Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04  Rev. A322
HAZARD AVOIDANCE
ECHO TOPS
 NOTE:  Echo tops cannot be displayed at the same time as NEXRAD or Cloud Tops are selected for display.
Echo	 Tops	data	(Figure	 6-14)	shows	 the	location,	 elevation,	 and	direction	 of	the	 highest	 radar	echo.		 The	
highest radar echo does not indicate the top of a storm or clouds; rathe\
r it indicates the highest altitude at 
which	precipitation	is	detected.		Information	is	derived	from	NEXRAD...

190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850323
HAZARD AVOIDANCE
The	display	 of	radar	 coverage	 is	always	 active	when	either	 NEXRAD	 or	Echo	 Tops	is	selected.		 Areas	where	
NEXRAD	 radar	coverage	 and	Echo	 Tops	information	 is	not	 available	 or	is	not	 being	 collected	 are	indicated	 in	
a gray shade of purple. 
CLOUD TOPS
 NOTE:  Cloud Tops and Echo Tops cannot be displayed at the same time.
Cloud	Tops	data	(Figure	6-16)	depicts	cloud	top	altitudes	as	determined	from...

Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04  Rev. A324
HAZARD AVOIDANCE
XM LIGHTNING
 NOTE:  XM Lightning cannot be displayed at the same time as optional L-3 STORMSCOPE® WX-500 
Lightning data.
Lightning	 data	(Figure	 6-18)	shows	 the	approximate	 location	of	cloud-to-ground	 lightning	strikes.		A	strike	
icon	 represents	 a	strike	 that	has	occurred	 within	a	two-kilometer	 region.		The	exact	 location	 of	the	 lightning	
strike	is	not	displayed.
Lightning 
Strikes
Figure 6-18...

190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850325
HAZARD AVOIDANCE
CELL MOVEMENT
Cell	Movement	 data	(Figure	 6-20)	shows	 the	location	 and	movement	 of	storm	 cells	as	identified	 by	the	
ground-based	 system.		Cells	are	represented	 by	yellow	 squares,	 with	direction	 of	movement	 indicated	with	
short, orange arrows.
Figure 6-20  Cell Movement Data Storm 
Cells
On	
most	 applicable	 maps,	Cell	Movement	 data	is	selected	 for	display	 along	with	NEXRAD.		 On	the	Weather	
Data...

Garmin G1000 Pilot’s Guide for the Socata TBM 850190-00709-04  Rev. A326
HAZARD AVOIDANCE
SIGMETS AND AIRMETS
SIGMETs		(SIGnificant	METeorological	 Information)	and AIRMETs	(AIRmen’s	METeorological	 Information)	
are	broadcast	 for	potentially	 hazardous	weather.	 	A	Convective	 SIGMET	is	issued	 for	hazardous	 convective	
weather.	 	A	localized	 SIGMET	is	a	significant	 weather	condition	 occurring	 at	a	localized	 geographical	
position.
Figure 6-22  SIGMET/AIRMET Data
Convective 
SIGMET
AIRMET...