Hand warmers are a great way to keep your snakes warm when the power goes outI always keep some around just in case. I had to use them once when the power went out at my apartment for 12 hours (also because of an ice storm) and they worked wonderfully. Just make sure you put them inside of a sock or something because they can get a little hot...I did that just to be safe
I guess if you have the money then a generator would be the best...but for us poor folks hand warmers and socks are an excellent alternative in my humble opinion.
Sorry for your loss thoughI would be so upset if that happened to me