Preparing for a winter power outage means solving three problems before they happen: staying warm without your furnace, keeping food safe without electricity, and protecting your home from freeze damage. Most winter outages last a few hours, but ice storms and heavy snow can knock power out for days. The time to prepare is now, not when the lights go dark.
Stock Water, Food, and Light Sources
Store at least one gallon of water per person per day, enough to cover several days of drinking and basic sanitation. If your home relies on a well pump, you’ll lose water pressure when the power goes out, so this supply becomes critical fast. Fill extra containers or your bathtub when a storm is forecast.
Keep a several-day supply of non-perishable food that doesn’t require cooking or refrigeration: canned goods (with a manual can opener), peanut butter, crackers, dried fruit, granola bars, and nuts. If you have a gas stove, you can still cook during an outage, but never use it as a heat source.
For lighting, battery-powered lanterns and flashlights are your safest options. Stock extra batteries in common sizes. A hand-crank or battery-powered radio lets you track storm updates and restoration timelines when your phone battery is running low. A portable power bank, fully charged before the storm, can keep your phone alive for a day or two.
Staying Warm Without Your Furnace
Heat loss is the central danger of a winter outage. Pick one room in your house as your warm room, ideally a smaller interior room with few windows. Close the doors to every other room to concentrate body heat and reduce the space you’re trying to keep comfortable. Hang blankets over windows and doorways for extra insulation.
Layer your clothing: a moisture-wicking base layer, an insulating middle layer like fleece or wool, and a windproof outer layer if you go outside. Wear a hat indoors. You lose heat quickly through your head, and a knit cap makes a noticeable difference. Sleeping bags rated for cold weather outperform regular blankets, especially if you zip two people into adjacent bags for shared warmth.
If you use a portable space heater powered by a generator or propane, keep all sides at least three feet away from beds, curtains, clothing, paper, and furniture. This is the minimum safe clearance recommended by the U.S. Consumer Product Safety Commission. Never leave a portable heater running while you sleep.
Avoiding Carbon Monoxide Poisoning
Carbon monoxide kills more people during winter storms than the cold itself, and the reason is almost always the same: someone runs a fuel-burning device indoors without ventilation. Generators, charcoal grills, camp stoves, and propane heaters that aren’t designed for indoor use all produce carbon monoxide. Run generators outside, at least 20 feet from any window, door, or vent, and point the exhaust away from the house.
Install battery-powered carbon monoxide detectors on every level of your home, especially near sleeping areas. If your detector sounds, get everyone outside immediately. Carbon monoxide is odorless and colorless. Early symptoms, like headache and dizziness, are easy to mistake for fatigue from the cold.
Protecting Your Pipes
When your home drops below freezing inside, water in your pipes can freeze, expand, and burst. The resulting flood causes thousands of dollars in damage and can happen within hours of losing heat.
Before the outage, open cabinet doors under kitchen and bathroom sinks to let warmer room air reach the pipes. Turn on the faucet farthest from your water heater and set it to a slow, steady stream with both hot and cold water flowing. For a single-handle faucet, set the handle to the center position so both lines stay moving. Running water resists freezing far better than standing water.
If you expect to be away from home during the outage, or if the outage will last more than a day in severe cold, shut off your main water supply and drain the system by opening all faucets. This eliminates the water that could freeze and burst your pipes. Know where your main shutoff valve is before you need it.
Keeping Your Food Safe
Your refrigerator and freezer hold temperature longer than most people think, but only if you resist the urge to open them. A closed refrigerator keeps food safe for about 4 hours. A full freezer holds its temperature for up to 48 hours; a half-full freezer, about 24 hours.
Group frozen items tightly together before the storm. A packed freezer stays cold longer because the frozen mass acts as its own ice block. If you have extra space, fill it with bags of ice or even water bottles that can freeze solid before the power drops. Once the outage stretches past four hours, move perishable refrigerator items like milk, meat, and leftovers into a cooler packed with ice or set them in a sealed container outside if the air temperature is below 40°F.
After power returns, check everything with a food thermometer. Any perishable food that’s been above 40°F for more than two hours should be thrown out. When in doubt, throw it out. Foodborne illness is not worth the cost of replacing groceries.
Recognizing Hypothermia Early
Hypothermia sets in when your core body temperature drops below 95°F. That’s only a few degrees below normal, and it can happen indoors during a prolonged outage, especially in older adults, young children, and people with chronic health conditions. The early signs are shivering, clumsiness, and slurred speech. As it progresses, you may notice confusion, memory loss, drowsiness, shallow breathing, and a weak pulse. In infants, watch for bright red skin that feels cold to the touch.
The tricky part is that hypothermia affects your thinking. A person becoming hypothermic may not realize what’s happening or may resist help. If someone in your household shows these signs, warm them gradually with dry blankets and warm (not hot) drinks. Remove any wet clothing first, since wet fabric pulls heat from the body far faster than dry fabric.
Keeping Pets Safe
Dogs and cats are vulnerable to cold in many of the same ways people are, but they can’t tell you they’re freezing. Keep pets in your designated warm room with the rest of the family. Provide thick, dry bedding elevated off the floor, since cold floors drain body heat quickly. Change the bedding if it gets damp.
Avoid using space heaters or heat lamps near pets. The American Veterinary Medical Association warns these pose burn and fire risks to animals. Heated pet mats can also cause burns and should be used with caution, if at all. A better approach is giving your pet a few bedding options in the warm room so they can adjust their own position based on comfort. Small dogs, short-haired breeds, and elderly animals are most at risk and may need a pet sweater or extra blanket layers.
Preparation Checklist Before the Storm
- Charge everything. Phones, power banks, laptops, rechargeable lanterns, and battery-powered radios.
- Fill your car’s gas tank. Gas stations can’t pump without electricity, and your car can serve as a temporary warming station.
- Get cash. Card readers and ATMs go down in outages.
- Fill your bathtub. You’ll need water for flushing toilets if you’re on a well or if municipal pressure drops.
- Know your shutoffs. Locate your main water valve and your electrical panel before the storm.
- Stock medications. Refill prescriptions early so you aren’t caught short during a multi-day outage.
- Move firewood inside. If you have a fireplace or wood stove, bring in enough for several days. Wet wood buried under snow is useless when you need it most.
The difference between a manageable inconvenience and a dangerous situation usually comes down to a few hours of preparation. Most of these steps cost little or nothing, and they’re far easier to do with the lights on.