Incident Overview
According to the pilot's statement, the helicopter was flying over a saddle pass in a mountain area when the flight encountered clouds that rapidly closed down on and around the aircraft. The pilot reported that she had no choice but to slow down and attempt to turn around without entering the low clouds that were moving in.
Pilot Actions
As the helicopter slowed, it suddenly began to rotate to the right. The pilot was unable to correct the yaw with left pedal input. After three revolutions, the low rotor RPM horn sounded. The pilot stated that she felt the helicopter control diminish and elected to put the helicopter down on the ground. At an altitude of about 6 feet, the pilot lowered the collective and the helicopter landed hard in a level attitude.
Outcome
The helicopter landed hard in a level attitude. The pilot's statement does not specify any injuries or damage resulting from the landing.