Garmin GPSMAP 740/740s XM Supplement - Page 5

XM WX Satellite Weather and XM Satellite Radio XM WX Satellite Weather and XM Satellite Radio XM WX Satellite Weather A Garmin XM satellite weather receiver and antenna receives XM WX Satellite Weather data and shows it on various Garmin devices, including the Navigation chart on a chartplotter. The weather data for each feature comes from reputable weather data centers such as the National Weather Service and the Hydrometeorological Prediction Center. For more information, see the XM WX Satellite Weather Web site at www.xmwxweather.com. Note: To view XM WX Satellite Weather information, you must have a subscription to XM WX Satellite Weather, and you must have a Garmin XM satellite weather receiver connected to a chartplotter. XM WX Satellite Weather Data Broadcasts XM WX Satellite Weather data is broadcast at set rates. For example, NEXt Generation Weather RADar (NEXRAD) data is broadcast at five-minute intervals. When the Garmin receiver is turned on, or when a new feature is selected, the receiver has to receive new data before it can be shown. You might experience a delay before weather data or a new feature appears on the map. Note: Any weather feature can change in appearance or interpretation if the source that provides the information changes. Viewing NEXRAD Precipitation Information The precipitation screen shows NEXRAD radar, storm cells, lighting strikes, and hurricane warnings. NEXRAD shows precipitation ranging from very light rain and snow, up to strong thunderstorms, in varying shades and colors. The time stamp in the upper-left corner of the screen indicates the elapsed time since the National Weather Service last updated the information. NEXRAD is shown either independently or with a variety of other weather information. From the Home screen, select Weather > Precipitation. Showing an Animated NEXRAD Loop You can view NEXRAD information as an image of the latest update or as an animated loop of the latest updates. From the Home screen, select Weather > Precipitation > Menu > NEXRAD Loop > On. Showing Cloud Cover From the Home screen, select Weather > Precipitation > Menu > Cloud Cover > Show. Changing from One Weather Chart to a Different Weather Chart 1. From the Home screen, select Weather. 2. Select a weather chart. 3. Select Menu > Change Weather. 4. Select a different weather chart. 700 Series XM WX Satellite Weather® and XM® Satellite Radio Supplement