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manual abstract
Viewing Present Forecast Information From the Home screen, select Weather > Forecast. Viewing Forecast Information for Another Time Period 1. From the Home screen, select Weather > Forecast. 2. Complete an action: • Select Next Forecast to view the forecast weather for the next 12 hours, and select Next Forecast again to view forecasts for the next 24, 36, and 48 hours, in 12-hour increments. • Select Previous Forecast to view the forecast weather for the previous 12 hours, and select Previous Forecast again to view forecasts for the previous 24, 36, and 48 hours, in 12-hour increments. 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 . as defined by the Weather Symbol Table (page 5). The forecast is viewed in 12-hour increments for the next 48 hours. . XM WX Satellite Weather® and XM® Satellite Radio Supplement XM WX Satellite Weather and XM Satellite Radio Weather Symbols Symbol Weather Symbol Weather Fair (sunny, hot, clear) Rain (drizzle, sleet, showers) Partly Cloudy Cloudy Thunderstorms Snow (snow showers, flurries, blizzard, blowing snow, sleet, freezing rain, freezing drizzle) Foggy Smoke (dusty, hazy) Windy Viewing Sea Conditions The sea conditions screen shows information about surface conditions, including winds, wave height, wave period, and wave direction. From the Home screen, select Weather > Sea Conditions. Surface Winds Surface wind vectors appear on the Sea Conditions screen using wind barbs that indicate the direction from which the wind is blowing. A wind barb is a circle with a tail. The line or flag attached to the tail of the wind barb indicates the wind speed. A short line represents 5 knots, a long line represents 10 knots, and triangle represents 50 knots. Wind Barb Wind Speed Wind Direction Wind Barb Wind Speed Wind Direction Calm 20 knots 5 knots 50 knots 10 knots 65 knots 15 knots XM WX Satellite Weather® and XM® Satellite Radio Supplement XM WX Satellite Weather and XM Satellite Radio Wave Height, Wave Period, and Wave Direction direction in which a wave is moving. Wave heights for an area appear as variations in color. Different colors indicate different wave heights ., as shown in the legend . on the left of the screen. The wave period indicates the time (in seconds) between successive waves. Wave period lines indicate areas. that have the same wave period. Wave directions appear on the chart using red arrows .. The direction of each arrow pointer indicates the . . . . Viewing Forecast Sea Conditions Information for Another Time Period 1. From the Home screen, select Weather > Sea Conditions. 2. Complete an action: • Select Next Forecast to view the forecast visibility for the next 12 hours, and select Next Forecast again to view forecasts for the next 24 and 36 hours, in 12-hour increments. • Select Previous Forecast to view the forecast visibility for the previous 12 hours, and select Previous Forecast again to view forecasts for the previous 24 and 36 hours, in 12-hour increments. XM WX Satellite Weather® and XM® Satellite Radio Supplement XM WX Satellite Weather and XM Satellite Radio Viewing Fishing Information The fishing screen shows present water temperature, present surface pressure conditions, and fishing forecasts. From the Home screen, select Weather > Fishing. Surface Pressure and Water Temperature Data Surface-pressure information appears using pressure isobars and pressure centers. Isobars . connect points of equal pressure. Pressure readings can help to determine weather and wind conditions. High-pres...