4-49190-01150-02 Rev. J Garmin G500H Pilot’s GuideForewordSec 1SystemSec 2PFDSec 3MFDSec 4HazardAvoidanceSec 5AdditionalFeaturesSec 6Annun.& AlertsSec 7SymbolsSec 8Glossary Appendix AAppendix BIndexFigure 4-31 Weather Legends2) An abbreviated legend may be displayed on the upper right side of a WX DataLink Map page for the applicable weather products when selected in the PageMenu options for Weather.4.7.5 XM NEXRADWSR-88D, or NEXRAD (NEXt-generation RADar), is a network of 158 high-resolution Doppler radar systems that are operated by the National WeatherService (NWS). NEXRAD data provides centralized meteorological informationfor the continental United States and selected overseas locations. The maximumrange of a single NEXRAD radar site is 250 NM. The NEXRAD network providesimportant 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 reflectthe current radar synopsis. Due to the inherent delays and the relative age ofthe data, it should be used for long-range planning purposes only. Never useNEXRAD data or any radar data to penetrate hazardous weather. Instead, use itin an early-warning capacity of pre-departure and en route evaluation.
