The arithmetic people get wrong
One gallon of water per person per day. That is Ready.gov’s figure and it covers drinking plus basic sanitation.
For a family of four, over two weeks, that is fifty-six gallons — plus more for pets. Almost nobody pictures that correctly, and water is simultaneously the most important supply and the one most often short. The sheet does the multiplication so the number is in front of you rather than estimated.
Two things the flat figure hides: in very hot weather the need can double, which matters because the outages that last are the ones after hurricanes and wildfires; and children, nursing mothers and anyone ill need more than the baseline.
Food is easier: roughly three shelf-stable meals per person per day, and a manual can opener, which is the single most forgotten item in every emergency kit ever assembled.
Three days or two weeks
Three days was the traditional standard and it assumed help arrives quickly. Guidance has moved toward two weeks for anywhere that can be isolated — which, after a hurricane, a wildfire or a serious winter storm, describes most places.
If two weeks of water is genuinely not storable where you live, store what you can and know where the nearest resupply is. Partial preparation is not a failure; the failure is having neither supplies nor a plan.
Only the hazards you actually have
A preparedness list that covers hurricanes, earthquakes, wildfires, floods, tornadoes and blizzards at once is too long to act on. It gets read, admired and not done.
Tick what actually happens where you live and the sheet prints those sections only. Hurricane shutters are irrelevant in Colorado; furniture strapping is irrelevant in Florida. A short list you complete beats a comprehensive one you do not.
What actually kills people afterwards
This is worth stating plainly, because it is consistent and it is preventable.
Carbon monoxide, overwhelmingly. Generators run in a garage or too close to a window. Grills brought indoors for warmth or cooking. Unvented heaters in a sealed room. It happens after every major storm, to people who survived the storm itself. A generator goes outdoors, well away from any window or door, always.
Fires from candles. Use torches. One per person, with spare batteries.
Driving through moving water. A foot of moving water floats a car. This is the most common flood fatality and it happens to people who thought it looked shallow.
How long the food actually holds
USDA figures, and they are shorter than people assume: a refrigerator keeps food safe for about four hours with the door shut, a full freezer for about 48 hours, a half-full freezer for about 24. After that, refrigerated meat, poultry, fish, eggs and leftovers get thrown out — and food is only safe to refreeze if it still has ice crystals or is at 40°F or below.
The door is the whole variable. Every time it opens, the clock restarts shorter.
The plan is the part people skip
Everyone buys supplies. Far fewer write down where the household meets, how they find each other and who they call.
Meeting point near home for a house fire
Meeting point outside the area for an evacuation
Out-of-area contact local lines fail; long distance often works
Two evacuation routes the single road out is the one that closes
Where the pets go many shelters will not take them
Utility shutoffs where they are, and the tool beside them
School release plan who is authorised, and where they go
The out-of-area contact matters more than it sounds. In a regional emergency, local networks are saturated while a call or text to another state often gets through, and it gives everyone one number to report in to.
Documents and photographs, before anything happens
Two things that cost an afternoon and are worth a great deal afterwards:
Photograph the house, inside and out, before a storm season. It is your insurance baseline and it takes twenty minutes. Keep it in cloud storage, not on a shelf.
Know whether you have flood cover. Standard home and renters policies exclude flood. It is a separate NFIP policy with a 30-day waiting period before it takes effect — which means it is a decision for an ordinary Tuesday, not for the day a storm is named. The waiting period is waived in a few cases, mainly when the policy is bought as part of a mortgage or after a flood map change, but none of those help someone watching a forecast.
Check it once a year
Water, batteries, food and medication all expire, and a kit assembled four years ago is a box of expired supplies and a false sense of security.
Attach it to something you already do. The maintenance list puts the emergency kit check in November, alongside the alarm batteries, for exactly that reason.
Store some of it somewhere other than the basement. The place you keep the kit is sometimes the place you cannot reach.