How much water do you have stored?
A year + ago when Hurricane Ike hit Houston, the electricity grid was shredded. The biggest problems were access to drinking water, and ice to keep food fresh.
The gubmint FEMA brought in water about 5 days after the storm but volunteers in Hoston had to unload it, Homeland Security and FEMA were useless.
Generators use a lot of gasoline, so they are not very practical although we did have one for about 7 days. All together we were out of power nearly 2 weeks.
Water was the key shortage.