I suppose it could be. If it's windy enough to snap a cable of the bay bridge, I suppose its windy enough to push over a train.
Ah, you guys don't know what wind is, until you've lived in Wyoming! You haven't lived until you've endured 60 MPH sustained wind, and 80+ MPH gusts for 4 straight days!
I lived in Nebraska for 19 years. Been there done that. Cant beat the 120mph windstorm we had in the bay area Jan 08.