Whenever there is severe weather approaching, fill water containers. We're only one lightening strike from not having water. If there is time, do the laundry, do the dishes, take a shower, clean the kitchen and bathroom. Chores aren't fun but they're even less fun when there's no water or electricty to get them done later. It is also a good idea to always keep water jugs in the freezer as those will help keep the freezer cool a bit longer and provide water once it's thawed. If you know you're going to be without power, bake up foods like cakes and cookies which don't have to be refridgerated. Cook up a couple of meals with what is in the fridge to keep that from going bad. When the electricty is off for days, eat the ice cream first!
If there is a local wildfire, keep your lawn well watered long before it gets close. Gather debris. Again, you never know when the fire will knock out your power and a wet soil may save your property.
Have some of these on hand. They filter any water and make it drinkable, even removing viruses. Katadyn makes water purification systems for the worlds miltaries. We have several on hand.