Summr,
You have lots of good advise here, but the most important to me was part of what Gordon dropped on you.
"Wait it out."
We used to travel that time of year all the time. The grandparents are gone so there is no longer a reason, so we don't.
You have a self contained coach. Maintain provisions for three days. (If the SHTF real bad, you may want to hold up for two - we did once - The third is just for comfort.) It was kind of fun to sit in out warm comfortable cab and watch people struggle.
I am a pilot of aircraft and ships. It is well known that "pushing weather" is a way get search and rescue involved.
Matt
