As mentioned you have a couple of options:
- If you can take some time and go FAR away go for it. Problem with hurricanes is that while slow, they change direction randomly (in a sense). You have to go pretty far away to make sure you're out of the path, and then be prepared to stay a while in case you can't go back. Don't leave at the last minute as you could get stuck in it while trying to escape.
- If you can't go, then make sure your insurance is up to date. You can try to tie it down and whatever, but if you get a good gust it isn't going to matter much. Parking it behind a concrete block wall of a house is only good if it's away from the wind, which usually changes direction as the storm passes over (unless it's just brushing you).
I've lived through almost a dozen TSs & canes while living in central Florida. If your property is well maintained then it's a matter of personal preference to stick around. If it's not, get out and go somewhere else that is. It's not always the strength of the storm, but the duration too. Francis destroyed Cat5 rated structures even though it was only a Cat1, but it stalled for 24 hours at that level.
Oh yeah, make sure you have a generator... Doesn't need to be fancy, but a 2-3kW should run a fridge or two. Also keep in mind that there isn't usually much loss of life during the storm, it's when folks start venturing/cleaning afterwards that the injuries pile up.
Just my toughts. Best of luck to ya