As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INFLIGHT, DOOR LATCH CAUTION CAME ON FOLLOWED BY PASSENGER DOOR WARNING. RETURNED TO MSP. CLEANED SNOW AND ICE FROM AROUND BOTTOM SEAL OF MAIN CABIN DOOR (PAX) AND PRESSUREIZED AIRCRAFT IN ACCORDANCE WITH CRJ AMM 52-11-1. OPS CHECK GOOD ON GROUND.