As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WEATHER RADAR SYSTEM FAILED EN ROUTE. RADAR WOULD NOT PAINT GROUND AND WAS SPOKING DOWN MIDDLE OF SCREEN. FLIGHT DIVERTED TO DTW DUE TO KNOWN THUNDERSTORMS AHEAD. MAINTENANCE REPLACED WAVE GUIDE ASSEMBLY AND MISSING SPRING AND POST. ALSO, REPLACED RADAR TRANSCEIVER AND ANTENNA, OPERATIONAL CHECK NORMAL.