As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6416 - IAD-CHS - DURING CLIMB-OUT, RETURNED TO IAD DUE TO WEATHER RADAR INOP AND FORECASTED THUNDERSTORMS. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MX REPLACED WEATHER RADAR R/T. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)