change batteries in smoke detectors & carbon monoxide detectors
swap out stored water, if needed
inventory & check the age of emergency food stores
inventory emergency equipment, is it ready to go?
review & update personal emergency plans, to stay or go, & a backup plan.
check communications gear
what kind of Intel do you have for the local, county, state, & national areas around your location? what threats do you face?
is your air handling equipment ready to be used?
are your sewage disposal plans up-to-date & working?

What else needs to be looked over, procured, renewed, revised?