Twenty minutes prior to the accident, the local ASOS reported wind 350° at 4 knots, 5 miles visibility, heavy rain and thunderstorms and mist. Scattered clouds floated at 800 ft., with a broken deck at 1,800 ft. and an overcast layer at 3,000 ft. The temperature was 24°C, and the dew point 22°C. Remarks noted thunderstorms began at 2104 with frequent lightning overhead and that the storms were moving east. Approximately 0.10 inch of precipitation had fallen in the previous half hour. In a report recorded three minutes after the accident, the wind was 290° at 8 knots, gusting 16 with 3 miles visibility, heavy rain and thunderstorms. The clouds were essentially the same as the earlier report, but 0.63 inches of precipitation had fallen in the previous hour.