Cessna 210 Centurion / Turbo Centurion 210C; 210D
Flight Crew Private; Flight Crew Instrument
Flight Crew Last 90 Days 60; Flight Crew Total 1500; Flight Crew Type 250
Situational Awareness
Conflict NMAC
General None Reported / Taken
Human Factors
We entered the pattern at WST after cancelling our IFR flight plan in good VMC. At that time; a pilot in a Cessna Cardinal departed Runway 14 and announced that he had flown into a fog bank and would be flying eastbound. I made all usual callouts on the CTAF while approaching and entering the pattern at WST. These included 10 miles out; 5 miles out; intention to enter left crosswind; left crosswind entry; left downwind; left base and final. During our transit of the traffic pattern; the other pilot made similar callouts. He had decided to stay in the airport traffic pattern. We were ahead of him in the pattern. On short final (less than 0.5 miles from the runway threshold) and about 300 feet AGL; he flew underneath our aircraft. The separation was 200 feet or less.
Cessna P210 pilot reported an NMAC (Near Midair Collision) in the pattern at WST.