Garmin G600 Pilots Guide - Page 156
Nexrad
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Foreword System Sec 1 PFD Sec 2 2) A full page legend can be selected by selecting the Weather Legend option in the XM Weather Map Menu or pressing the LEGEND soft key on the Weather Map Page. The legend displayed will match the selected weather products. Turn the large or small MFD knobs to scroll through the legend, if necessary. 4.4.5 NEXRAD WSR-88D, or NEXRAD (NEXt-generation RADar), is a network of 158 highresolution Doppler radar systems that are operated by the National Weather Service (NWS). NEXRAD data provides centralized meteorological information for the continental United States and selected overseas locations. The maximum range of a single NEXRAD radar site is 250 NM. The NEXRAD network provides important information about severe weather for air traffic safety. NEXRAD data is not real-time. The lapsed time between collection, processing, and dissemination of NEXRAD images can be significant and may not reflect the current radar synopsis. Due to the inherent delays and the relative age of the data, it should be used for long-range planning purposes only. Never use NEXRAD data or any radar data to penetrate hazardous weather. Instead, use it in an early-warning capacity of pre-departure and en route evaluation. MFD Sec 3 Features Avoidance Hazard Sec 4 Additional Sec 5 & Alerts Annun. Sec 6 Symbols Sec 7 Appendix A Glossary Sec 8 Index Appendix B Figure 4-15 XM Weather - NEXRAD Composite data from all the NEXRAD radar sites in the United States is shown. This data is composed of the maximum reflectivity from the individual radar sweeps. The display of the information is color-coded to indicate the weather 4-30 Garmin G600 Pilot's Guide 190-00601-02 Rev. B