Garmin aera 795/796 Pilot’s Guide190-01194-00 Rev. C 87Hazard Avoidance Overview GPS Navigation Flight Planning Hazard Avoidance Additional Features Appendices Index• NEXRAD base reflectivity is sampled at the minimum antenna elevation angle. Anindividual NEXRAD site cannot depict high altitude storms at close ranges, andhas no information about storms directly over the site.• Radar coverage only extends to 55°N.• Any precipitation displayed between 52°N and 55°N is unknown.neXrAD IntenSItyColors are used to identify the different NEXRAD echo intensities (reflectivity)measured in dBZ (decibels of Z). “Reflectivity” (designated by the letter Z) is theamount of transmitted power returned to the radar receiver. The dBZ values increaseas returned signal strength increases. Precipitation intensity is displayed using colorscorresponding to the dBZ values.NEXRAD DataRADAR LegendSATELLITE MOSAICSatellite Mosaic displays infrared composite images of cloud cover taken bygeostationary weather satellites. The Satellite Mosaic provides up to seven levels ofcloud cover.RADAR Legend Satellite Mosaic/Cloud Tops Data
