I read about those wind storms this morning. Sounded pretty scary.
I have a back up generator for my snake room. In addition, I keep a case of heat packs around for double emergency backups. I know it doesn't help you now, but you might want to invest in a case of 40 hour heat packs. With 13 snakes, that would help keep some heat in the enclosures over a couple of days. A case has 240 heat packs.
Once you get power back, then keep a close eye on them for RI's.