GPSMAP 5000 Series Owner’s Manual 55uSInG Xm WX Weather and audIousInG XmViewing Forecast InformationForecasts show the weather conditions including fronts and precipitation. To view the forecastfor another time period, touch Next Forecast. The forecasted weather for the next 12 hours isshown. Continue to touch Next Forecast to view forecasts for the next 24, 36, and 48 hours. Toview forecast information for another location, touch and drag the screen until the desired locationappears.Understanding FrontsThe Fronts show lines indicating the leading edge of an air mass. This feature also shows pressurecenters. Pressure centers are represented by a large Red “L” for low pressure centers or a large Blue“H” for high pressure centers. Pressure centers represent an area where pressure is measured to beeither the highest or lowest relative to the surrounding area.Cold FrontWarm FrontStationary FrontOccluded FrontTroughIndicates a Low Pressure Center. A Low Pressure Center is an area where the measuredpressure is lowest relative to the surrounding area. Moving away from a Low PressureCenter in any horizontal direction results in increased pressure. Winds flowcounterclockwise around Low Pressure Centers in North America.Indicates a High Pressure Center. A High Pressure Center is an area where the measuredpressure is highest relative to the surrounding area. Moving away from a High PressureCenter in any horizontal direction results in decreased pressure. Winds flow clockwisearound High Pressure Centers in North America.Understanding City ForecastsCity forecasts appear as standard weather symbols. The forecast is viewed in 12-hour increments forthe next 48 hours.