Bob W,,
Ponder this,,, if you are at sea level and you get a foot of rain, or at 200 feet above and get that same foot or even where you are and get a foot of rain.. how is it better being on higher ground if the rain is coming down ?
Now from storm surge etc,, you are 100% correct,,, but from rain coming DOWN.. the steets, drains, creeks may not be able to shed the rain water fast enough so the water can rise even on higher ground.
Hope all goes well for everyone in the storms path,,, heck we just had a earthquake this week now here comes a Hurricane,,,
Be safe, Be well and oh yeah... cold beer helps,,,
Charles