Garmin 696, 695 owner manual Nexrad Abnormalities, 105

Hazard Avoidance

SiriusXM WEATHER PRODUCTS

NEXRAD

NEXRAD (NEXt-generation RADar), is a network of multiple high-resolution Doppler radar sites 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. In addition to a wide array of services, the NEXRAD network provides important information about severe weather and 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 maneuver in or near areas of hazardous weather. Rather, use it in an early- warning capacity of pre-departure and enroute evaluation.

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 severity level.

The display of radar coverage is always active when NEXRAD is selected. Areas where NEXRAD radar coverage is not currently available or is not being collected are indicated in grayish-purple (Weather (WX) Page Only). Radar capability may exists in these areas, but it is not active or is off-line.

NEXRAD Abnormalities

There are possible abnormalities regarding displayed NEXRAD images. Some, but not all, of those include:

•Ground clutter

•Strobes and spurious radar data

•Sun strobes, when the radar antenna points directly at the sun

•Military aircraft deploy metallic dust (chaff) which can cause alterations in radar scans

•Interference from buildings or mountains, which may cause shadows

Overview GPS Navigation Flight Planning Hazard Avoidance Additional Features Appendices

Index

190-00919-00 Rev. F Garmin GPSMAP 695/696 Owner’s Manual 105