GIS NEXRAD layers
The NEXRAD layer used in these images are available in a georeferenced RASTER format. You will need this this world file rto correctly georeference them. The projection of these images is geographic NAD83 (unprojected). You will need to rename the world file to match the filename of the RADAR layer before loading into your GIS. You may also be interested in the conversion of color index values to dBZ and more details on these mosaics.