Garmin aera 500 Series Pilot’s Guide
190-01117-02 Rev. C
91
Hazard Avoidance
Overview GPS Navigation Flight Planning Hazard Avoidance Additional Features Appendices Index
SURFACE PRESSURE
This feature displays pressure isobars and pressure centers. The isobars connect
points of equal pressure. Pressure readings can help determine weather and wind
conditions. High pressure areas are generally associated with fair weather. Low
pressure areas are generally associated with clouds and the chance of precipitation.
Isobars that are packed closely together show a strong pressure gradient. Strong
gradients are associated with areas of stronger winds. Pressure units can be displayed
in Millibars (mb) and Inches of Mercury (in).
Surface Pressure Data
USING XM SATELLITE WEATHER PRODUCTS
XM Weather Products can be displayed on the Navigation Map and individually on
the Weather Maps.
The setup menu for the Navigation Map controls the map range settings above which
weather products are decluttered from the display. If a map range larger than the
weather product map range setting is selected, the weather product data is removed
from the map. For weather products such as Lightning, and Storm Cells, the weather
product is displayed when a map range “smaller” than the weather product map range
setting is selected (Satellite Mosaic works inversely). The menu also provides a means
for enabling/disabling display of ‘Airmets’, ‘Sigmets’, ‘Weather Data’, ‘NEXRAD’, and/
or ‘Fronts’ on the Navigation Map.
Additional information about the following can be displayed by panning over the
display on map:
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