The Local Radar base reflectivity product is a display of echo intensity (reflectivity) measured in dBZ (decibels). "Reflectivity" is the amount of transmitted power returned to the radar receiver ...

Part 2 of a 2 part Photoshop CC tutorial showing how to make a great-looking, classic, radar screen display including a grid background, radar sweeps, glowing blips, and radiating concentric circles.