What donít you have already? Think of the rules of 3ís and shelter, water, food... Make sure the basics are covered.

Agree with containers for bulk water storage. Water is needed for drinking and itís also good to have around for hygiene.

Iím not a fan of buying gear just because a storm is on its way. Buy stuff thatís useful with or without a storm. Water filtration is something thatís useful and in some coastal communities the tap water on a good day tasted brackish. Iíve been using water filters with ďpotableĒ water since 1985 when I lived near the coast in Virginia. The water was awful without a storm let alone with compromised system.

You should probably add a few gallons of bleach to your shopping list.
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Better is the Enemy of Good Enough.
Okay, whatís your point??