Fill a couple of large trash cans with water for flushing, washing dishes, a different one for rinsing hair.
battery operated fan and tv and radio.
get bleach if you think you may get water in.
Lift furniture up on large cans.
Put those important papers into a ziplock bag.
have a place to meet in case of people missing.
Have one relative out of the way to be a contact person.
get powdered and canned milk.
bug spray!
If they say GO, you GO, your life is in danger.