The aging NEXRAD radar network is said to be reaching the end of its lifespan, prompting NOAA to develop a plan for the deployment of the Phased Array Radar (PAR) system.

The earlier versions, including WSR-57 (Weather Surveillance Radar - 1957) radar, have been replaced by the Next Generation Weather Radar program (NEXRAD). NEXRAD is also known as WSR-88D (Weather ...