The short answer
Before: store 1 gallon of water per person per day, food that needs no cooking, lights for every person, a radio that runs without wall power, medicines, cash and a full gas tank. During: report it, unplug electronics, keep the fridge shut, use flashlights not candles, and keep every generator, grill and camp stove outside. After: plug things back in a few at a time, sort the fridge with the 40°F / 2-hour rule, and restock what ran out.
This is the one-page version: every box you need to tick, in order. Each section links to the guide that explains it in depth. Print it, stick it inside a kitchen cabinet, and check it twice a year.
Before: stock up while the power's on
Water and food
- Water: 1 gallon per person per day. At least 3 days, and try for 2 weeks (CDC). For four people that's 12 gallons, or 56 for two weeks.
- Food that needs no cooking and no fridge, for at least 3 days: canned meals, peanut butter, crackers, ration bars
- A manual can opener
- Extra food and water for pets
Light, power and information
- A flashlight or headlamp for each person, and spare batteries
- A radio that runs on batteries, a hand crank or the sun, so you still get news when the phone dies
- Power banks, charged
- Your electric provider's outage number written on paper, and its outage texts turned on
Health and warmth
- Prescription medicines and a plan for any that need the fridge (ask your pharmacist)
- Batteries for hearing aids and medical devices, and a backup power plan for any medical equipment
- A first-aid kit
- Blankets, sleeping bags and warm layers for everyone
- A working carbon monoxide alarm and smoke alarm, tested
Money, car and house
- Some cash in small bills (card readers and ATMs need power)
- A gas tank kept at least half full
- Know how to open the garage door by hand
- Copies of IDs, insurance and prescriptions in a waterproof bag
Full list by category: the 72-hour emergency kit checklist. For longer outages: how much water and food 2 weeks or 30 days takes.
When a storm is in the forecast
- Charge phones, power banks, rechargeable lights and the radio
- Fill the car's gas tank
- Fill clean containers with drinking water, and fill a bathtub for flushing toilets in case the water system loses power
- Freeze jugs of water to help keep the fridge and freezer cold
- Refill prescriptions and get cash
- Bring pets inside and have a cooler ready
During: the first hour without power
- Check whether it's just you. Look at your breaker panel and your neighbors' windows.
- Report the outage to your electric provider. Don't assume someone else did.
- Unplug electronics and appliances you don't need, and leave one lamp switched on so you'll know when power is back.
- Keep the fridge and freezer closed. About 4 hours for the fridge; about 48 hours for a full freezer, 24 if half full (FoodSafety.gov).
- Use flashlights and headlamps, not candles.
- Turn on the radio for news and official instructions.
- Check on neighbors who live alone.
During: the safety rules that don't bend
- Treat every downed power line as live. Stay away and report it.
- Follow any boil-water notice. A rolling boil for 1 minute is enough (EPA).
- Stay off icy or flooded roads unless you have to drive.
Cold weather: read how to heat your home safely without power and the ice storm outage guide.
During: if it lasts more than a day
- Eat from the fridge first, then the freezer, then the pantry
- Ration batteries: one light per room, headlamps for tasks, phones on low-power mode
- Pick one room to keep warm (or cool) and gather everyone there
- Dial 211 or check your county emergency manager for warming centers, cooling centers and water distribution
- Decide early whether to stay or go. Leave when you can't keep one room at a safe temperature, when someone depends on medical equipment you can't run, or when officials tell you to.
Going past a week? The week-by-week plan for a long outage covers week 2 and day 30.
After: when the power comes back
- Plug appliances back in a few at a time
- Go through the fridge and freezer: throw out perishables that sat above 40°F for 2 hours or more. Food that still has ice crystals or is at 40°F or below can be refrozen. When in doubt, throw it out; never taste-test.
- Replace any medicine that needed the fridge and got warm (ask your pharmacist)
- Recharge everything, refill the water, and restock what you used while you still remember what you were missing
- Write down what you wished you'd had, and add it to the kit
A kit for the next one
The gaps people notice in the dark are usually the same: a radio that doesn't need wall power, a light for every person, and something warm. If you'd rather buy those than gather them, here's what ours cover.
Blackout & Storm Bundle
$99.95Hand-crank solar weather radio, 2 USB-C headlamps, 4 emergency blankets and a fire starter.
See what's insideHand-Crank Solar Weather Radio
$49.95Solar, crank or battery power. AM/FM plus weather band, USB phone top-up, flashlight and SOS alarm.
See what's inside72-Hour Go-Bag for Two
$199.95Weather radio, 2 food rations, 12 water pouches, 2 filter straws, light, warmth, tools and dry bags in one backpack.
See what's insideSources
- Ready.gov: Power Outages
- Ready.gov: Power Outages (archived December 2020 copy, includes medicine guidance)
- Ready.gov: Build a Kit
- CDC: How to Create an Emergency Water Supply
- FoodSafety.gov: Three Ways to Keep Food Safe When You Lose Power
- CDC: Use a Generator Safely
- CPSC: New Report on Carbon Monoxide Fatalities, Urges Generator Safety (2022)
- EPA: Emergency Disinfection of Drinking Water
Questions people ask
What should I do first when the power goes out?
Check whether it's just your house (breaker panel, neighbors' lights), then report it to your electric provider. Unplug electronics, leave one lamp switched on so you know when power is back, keep the fridge and freezer closed, and get flashlights and a radio out instead of candles.
How long will food stay safe in the fridge during an outage?
About 4 hours if you keep the door closed. A full freezer holds its temperature about 48 hours, a half-full one about 24, according to FoodSafety.gov. Throw out perishables like meat, milk, eggs and leftovers that have been above 40°F for 2 hours or more.
How far from the house does a generator need to be?
Outside, at least 20 feet from doors, windows and vents, with the exhaust pointed away from your home, per the CDC and CPSC. Never in a garage, basement or porch, even with the door open.
How much water should I have for a power outage?
1 gallon per person per day. The CDC says store at least a 3-day supply and try for 2 weeks. A family of four needs 12 gallons for three days and 56 gallons for two weeks.
When should we leave the house?
When you can't keep one room at a safe temperature, when someone depends on powered medical equipment you can't run, or when local officials tell you to. Dial 211 or check your county emergency manager for warming centers and shelters.