I had to think long and hard about that response. I was in BR for four months. I thought my life had rewound, I went from living on my own, to moving back in with my college roommate!! Though she was a life saver.
My parents own a house in BR for my sisters (cheaper than double rent) to live in while in college. So we now have a great evac spot, and technically we're residents!
No sirens, it's not like a tornado. If it comes, and is a three. Leave, you haven't experienced one and really it's not worth it! A three is real scary, a one and two is scary, but doable. You will know a day or two before if it's projected our way. It might not be 100% so you'll have a lot of people over a wide area evacuating. (ex. Mississippi Gulf Coast to New Orleans, or if it goes west, BR isn't safe either to New Orleans)
Watch the news. Keep informed, they will let you know what to do! Pack important papers, meds, wedding albums, pets anything irreplaceable and head out.