It may be too late to get to the store now but if you're trying to find a quick gluten-free item for a hurricane evacuation, here's a good option I found recently.
They're called ThinkThin bars, and they are available in several varieties at Publix for $1.50 each. They are high protein bars that are certified gluten free and have the additional bonus of being sugar free.
I discovered them a couple of months ago when I was stuck in airport desperately looking for something I could eat to get me through the trip, and I've been buying them ever since just to keep around the house. And they were the only specific hurricane-prep food I went out and bought.
If you can get to Publix today, you might want to check them out.