[Daryles]

IF you cant move...
Bring your slides in, fill your freshwater tank, fill all your tanks if you know you are NOT in an area susceptible to flooding. This adds 1600lbs ballast to your rig.
We did this on our maiden voyage to SD. We survived 74mph straight line winds. We were sideways to the wind also. Very few trees in the Campground.
Now IF you are in an area which could have rising waters, do NOT fill your grey or black tanks.
AND disconnect your sewer hose.
I read of sewer water coming back up the pipe in Manatee Cove Famcamp at Patrick Space Force Base as the water flooded the Campground.