Plain English Meaning
A national system of weather radars that shows pilots where rain and storms are, how strong they are, and which way they are moving.
Full Definition
A nationwide network of high-resolution Doppler weather radars operated by the National Weather Service that detects precipitation intensity, movement, and structure within the atmosphere. NEXRAD data is processed into composite and base reflectivity images showing the location and severity of rain, snow, hail, and thunderstorms, and is widely distributed to pilots through Flight Service, electronic flight bag apps, and in- weather receivers.