I know this might sound dumb, but if the authorities know a hurricane of this magnitude is headed their way, wouldn't/couldn't they make a decision to shut down the power in the area to help protect against potential electrocutions in flood waters, etc.? Seems logical to me, but what do I know?
The power companies are pretty good about turning off downed power lines pretty quickly. And anyone who is out wandering in the middle of the storm when this is likely to be a problem already has a death wish.