Garmin XM WX - Manual (Page 8)

4 XM WX Satellite Weather ® and XM ® Satellite Radio Supplement
XM WX Satellite Weather and XM Satellite Radio
Viewing a Coastal Forecast or an Offshore Forecast
1. From the Home screen, select Weather > Forecast.
2. Pan the map to an offshore location, and select Local Weather.
3. Complete an action for the selected location:
• Select Current Cond. to display the current weather conditions.
• Select Forecast to display the forecast.
• Select Sea Surface to displace the sea surface condition at the selected location.
Weather Fronts and Pressure Centers: Surface Analysis Weather Maps
Weather fronts appear as lines that indicate the leading edge of an air mass.
Front Symbol Description
Cold front
Warm front
Stationary front
Occluded front
Trough
Pressure-center symbols often appear near weather fronts.
Pressure
Center
Symbol
Description
Indicates a low-pressure center. A low-pressure center is an area where the measured pressure is lowest
relative to the surrounding area. Moving away from a low-pressure center in any horizontal direction results in
increased pressure. Winds flow counterclockwise around low-pressure centers in the northern hemisphere.
Indicates a high-pressure center. A high-pressure center is an area where the measured pressure is highest
relative to the surrounding area. Moving away from a high-pressure center in any horizontal direction results in
decreased pressure. Winds flow clockwise around high-pressure centers in the northern hemisphere.
City Forecasts
City forecasts appear as weather symbols
➊
as defined by the Weather Symbol Table ( page 5 ). The forecast is
viewed in 12-hour increments for the next 48 hours.
➊