I found this clip on youtube of a plane getting pushed on ice due to strong winds. Have a look. I guess I just want to hear some comments about what is reallly going on here. How we can estimate the force of the wind pushing, what chance the ramp agent has of holding the place himself if say he digs his heels into the ground, what kind of traction the tires have etc. I think the winds were probably not that strong, especially since the snowflakes we can see are not racing across the screen, nor do I see and big clouds of snow from some large wind gusts in the frame. Consider the snow you would see kicked up even behind even a turboprop once it starts to move . Then compare with the winds seen here. I am tempted to say that the plane had to have been empty, and little/no fuel, and a real slick layer of ice was formed right under the tires (not snow), and the winds themselves were not that strong.