As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - HIT LIGHT TO MODERATE TURBULENCE AT 10,000 FEET. GOT MESSAGE WARNING AND FUSELAGE DOOR WARNING. HEARD LOUD HISS AT REAR OF AIRCRAFT, AIRCRAFT DEPRESSURIZED. FOUND OUTSIDE DOOR HANDLE POPPED OPEN. LOCKING MECHANISM NOT PROPERLY LATCHED. NO DISCREPANCIES FOUND. LATCH OPERATING PROPERLY.