Just off the top of my head, I wouldn't go to any forest. Even if you don't get full huricane-force winds, I would think that any winds over 40 mph, especially with heavy rain to soak the ground, would cause trees to fall.
Even if none fall right on top of you, they could still fall over the roads you used to get in, keeping you from getting out in any timely manner. Plus, heavy rain would most likely cause the forest roads to become impassable until they dry out. And I would guess that the government would be too busy trying to clear real roads to be able to worry about clearing roads in a forest or park.
Even if no trees come down, I would expect dead branches and stuff IN the trees to go flying, probably causing significant damage to your rig if they hit it.
If I was having to ride out a bad storm in an RV, I would try to find a parking lot where I could park close to a sturdy building that could block the wind.