4 700 Series XM WX Satellite Weather
®
and XM
®
Satellite Radio Supplement
XM WX Satellite Weather and XM Satellite Radio
Viewing a Marine Forecast or an Offshore Forecast
1. From the Home screen, select Weather > Forecast.
2. Pan the map to an offshore location.
3. Touch a location on the chart.
The Marine Forecast or Offshore Forecast options appear when forecast information is
available.
4. Select
Marine Forecast or Offshore Forecast.
Weather Fronts and Pressure Centers
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 ow counterclockwise around low-pressure centers
in North America.
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 ow clockwise around high-pressure
centers in North America.
City Forecasts
City forecasts appear as standard weather symbols. The forecast is viewed in 12-hour increments for
the next 48 hours.
City forecasts
Weather
fronts
