Weirdest thing happened today

SO I am out at a lake called lost creek fairly large lake in Southern Oregon. Have about 10 people on my boat. Th water is very very choppy so we decide to drive over to the other side of the lake and see what it was like over there. Half way across in the middle of the lake the sun dissapears, it gets dark the lake got so choppy I felt like we were in the middle of the ocean..waves were crashing over my boat everyone was freaking out. Lasted about 3-4 minutes and then the clouds went away the sun came out again and the lake kinda settled down. I have never seen anything like that before.