As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WXR FAIL MSG ON MFD DURING CLIMBOUT. GROUNDED - YES. PILOTS REPORT WXR FAILED CLIMBING PAST FL180 FROM SEA. WXR BEGAN WORKING AGAIN ONCE ON THE GROUND IN JNU. FOUND NO INBOUND OR RELATED EXISTING FDE. NO PRESENT OR EXISTING FAULTS EITHER. PERFORMED WXR OPS TEST REF B737-9 AMM 34-41-00-710-801. OPS TESTS GOOD & HAS NO HISTORY.