Here in Hawaii, I stock up twice a year and rotate the canned goods in preparation for Hurricane Season. Always a store of assorted batteries for flashlights, tabletop stove gas cannisters, propane tanks for the outdoor grill, charcoal (in case the length of power outage would be weeks long). We've had a few Hurricanes in the past that caused rolling blackouts for the State, tsunami alerts, earthquakes that rocked the island for a half day worth of power outages, etc. So it's always a very good idea to keep things stocked for these unexpected turn of events.