As others mentioned be sure you have a full tank of propane.
If you will be leaving soon after the storm it will help to have to slide toppers dry.
We've had up to 4' of snow on our side toppers and they are not damaged.
I'd not worry about leaving the rig...just pull in some of the slides to have less space to heat. It will be such a short snow event it will be gone quickly. I'd rather stay in the rig to monitor the situation.
Jacks...if you will be leave before the weather warms be prepared to pour hot water over the base to release them from the ground. If you'll be staying put for a while...no worries, they will thaw and dry out.