I'm don't know that the wind speed was epic but it was strong enough to blow you over. My experience was on one of the early days of Bike Tour Colorado in mid June 2011. We were riding on Trail Ridge Road in Rocky Mountain National Park from Estes to Granby. The Park Rangers were reluctant to let us ride through the park. After a long wait they opened the gates and we quickly saw why. Not far into the upper parts of the park we were hit with severe cross winds and blinding sleet and snow. The sleet felt like pins hitting your skin.
I was afraid the wind was going to blow me off the road and down the cliff, so I was alway moving further away from the edge of the road. Only 100+ of us made us all the way the Granby. All the other 1100 or so were bussed from either Estes or from the Visitors Center at top of RMNP.
Here is a picture right before we hit the wind gusts.
This is what it was like while we were waiting for the gates to open:
