Walmart has propane camping stoves for like $15. You can use those to boil water to sanitize it. Alternatively, you can use regular household bleach to sanitize water for drinking. 2 drops per quart. Let sit for 30 minutes, and it's good to go. Or, just fill buckets/bathtub before the storm hits.
In a worst, worst case scenario, sealed moist towelettes and garbage bags make use for toileting needs, a whistle to aid rescue efforts, and tools, just in case you need to shut off any utilities.