Don't know how to break this to you Tom, but so far only about 6 inches! But, woke up to find the feed line for the water is frozen so I had to go plug in a heater under the mobile to thaw it out.
BC Kevin yes some people use studded snows. I use 4 quality snow tires w/o studs. Usually Nokians but this year both cars are running Michelin X Ice tires...