Sequence of Events
The pilot was inbound and checked the Automatic Terminal Information Service (ATIS), which reported wind from 350 degrees at 10 knots. The pilot continued inbound and, upon contacting the tower, the wind was reported as 350 degrees at 6 knots. The pilot was cleared to land on the runway of his choice and stated that he elected to land on Runway 15 instead of Runway 33 because Runway 15 sloped uphill.
At approximately 75 feet above ground level (AGL), the aircraft encountered turbulence and a downdraft or wind shear. The pilot applied power, but the aircraft touched down in a three-point attitude, then became airborne again to about 30 feet AGL. The pilot elected to continue the landing since sufficient runway remained.
However, the aircraft encountered turbulence again, and after it touched down, a gust of wind was also encountered. Subsequently, the aircraft went off the side of the runway onto snow-covered terrain and nosed over.
Weather Information
The ATIS initially reported wind from 350 degrees at 10 knots. When the pilot checked with the tower, the wind was from 350 degrees at 6 knots. No other weather conditions were explicitly stated in the source.