Any wind speed of above 60 MPH is considered dangerous to walk in.
If the wind gets 60 MPH or above you should seek shelter and avoid walking in it because the wind speed could knock you over or blow you into traffic.
Wind speed of between 40 MPH to 50 MPH makes walking difficult and a wind speed of 51 MPH to 61 MPH makes it very difficult and even dangerous to walk in.
Yes it is possible for the wind to lift someone up off the ground if the wind speed is high enough.
For the wind to be able to pick or lift someone up off the ground the wind speed needs to be 100 MPH or higher before it can lift you off the ground.
The wind at below 100 MPH could knock you over but if the wind gets above 100 MPH like in a hurricane the wind can certainly pick your body off of the ground and lift you into the air.
I was in a 180 MPH wind before during a hurricane and held onto a pole and it did lift me up into the air.
It was such short notice and I was walking down the street and saw a hurricane and the wind suddenly picked up so I grabbed onto a pole and I was actually lifted up into the air while holding on.
It was a fun but frightening experience.