Flight Details
The pilot, who was not instrument rated, reported obtaining a weather briefing from flight service before departure. The forecast indicated marginal VFR conditions.
Weather Encounter
About one hour into the flight, the pilot experienced deteriorating weather, including lowering visibility and rain. He executed a 180-degree turn and diverted to an airport.
Accident Sequence
Upon arrival, the pilot landed long on Runway 27. He did not perform a go-around due to the deteriorating weather conditions. The airplane continued off the end of the runway and entered a ditch.
Weather Briefing
Review of the pilot's weather briefing showed he was advised of cloud layers up to 25,000 feet along his planned route, and AIRMETs for IFR conditions. At the time of the accident, weather at an airport about 25 miles away was reported as: wind from 100 degrees at 11 knots; visibility 1 3/4 statute miles; light rain and mist; ceiling 500 feet broken, 3,300 feet overcast; temperature 39 degrees Fahrenheit, dewpoint 37 degrees Fahrenheit; altimeter 29.92 inches of mercury.