Our thoughts are with you. I'm in California so I didn't realize how bad everything was over there. I know there have already been some college evacuations allowed. We'll all be praying for everyone and their friends and families to stay safe.
Xelda offered great advice. When they need to be, leos are rather durable critters. If you can, grab some heat/cool packs from the drug store in preparation...but I'm not sure you'll have time or be able to and they'll be ok for the time being.
I actually had a similar situation -- fortunately I have those plastic critter keepers and had some boxes. I put a bunch of paper towels in each for the leos to hide in, tossed the leos in the containers, and threw towels over the see-through containers so they would be less frightened. I am going to be honest and say that I did stick a bunch of my babies that were sort of the same age in the same box -- I took a serious risk that and chose immediate safety over potentially sickening my leos. I was lucky because they got along fine and no one spread anything bad.
You should have seen my friends' living room for the week - I was sleeping on the couch and the living room had little containers of leos strewn about. I got jar lids for water and bought some heat bulbs from the pet store. I put the heat bulbs in desk lamps and whatever else I could find, and stuck them over the containers.
I sincerely hope you won't have to evacuate. Good luck, and our thoughts are with you.
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Too many Leos
1.0 feline "Spot"
0.1 canine "Tika"