Bill,
No Joking here.
We used to travel in winter all the time in an antique coach know to be poorly suited for bad roads. I have some things to share.
Most MH have the potable system inside the heated spaces, so they are not an issue. This often includes the potable tank, find out where it is.
Next, do your best to maintain 3 days of provisions. This is all Fuel, Food and Water. If things get bad, you may have to hold up a day or even two. The reason for three is that I have always been sort of paranoid. That may just be the biggest reason I managed to get old....
Have a CO monitor. Do not worry about the "RV" version, get one that is stand-lone and if it get beat up, frizby the thing and replace it. If you are running the gas heat, that uses both a lot of gas and a lot of DC power.
Be ready to wait while all the people that just have to be someplace else go and have the accident they need so they can go home and leave you alone. (That is why you need two days.)
Get a weather radio that works on its own batteries and carry at least one spare set. When things get bad, you will want this on all the time.
Most of all, be ready to watch the world go by.
Matt - tries to avoid this now.