How to prepare for a winter storm
A winter storm rarely kills with cold alone. Holding heat without power, keeping pipes from bursting and heating a house without carbon monoxide.
Winter storms are unusual among disasters in that the weather itself is rarely what harms people. The cold outside is survivable and well understood. What causes the deaths is what happens inside a cold house: an improvised heater, a generator in the wrong place, a driveway cleared too fast by someone whose heart was not up to it.
So the preparation is mostly about being able to stay warm for several days without burning anything indoors, and about the house surviving it too.
The three problems, in order
| Problem | What it does | What prevents it |
|---|---|---|
| Losing heat | House drops below liveable in a day or two | One insulated room, layers, bags rated for cold |
| Carbon monoxide | Kills within hours, without warning | Never burn fuel indoors; battery CO alarm |
| Frozen pipes | Bursts flood the house when it thaws | Heat reaching the pipes, water moving, mains shutoff known |
Before the season
Find your main water shutoff and test that it turns. Ten seconds of knowledge that saves a house.
Insulate the pipes that run through unheated space — crawl spaces, garages, exterior walls — and disconnect outside hoses before the first hard freeze. The full method.
Put a battery CO alarm on each sleeping floor and test it. Hardwired alarms stop when the power does.
Service the heating and clear the vents. Blocked flues are the other half of the carbon monoxide problem.
Stock for a week without shops or roads: water, food that needs no cooking, medication, formula, pet food, and the batteries.
Prepare one room — small, interior if possible, on a lower floor, with a door that closes. That is where the household lives if the heat fails.
When the power goes
- Consolidate into the prepared room. Close doors to everywhere else, cover windows at night, block the gap under the door.
- Dress in layers with a hat, including indoors and in bed. Most heat loss is a solved problem with wool and a closed door.
- Eat and drink warm things. Hydration matters as much in cold as in heat, and it is easy to forget.
- Keep pipes moving — a slow drip on the vulnerable runs — and if it gets very cold with no heat at all, shut the water off and drain the system.
- Check the fridge rules, and use the outdoors as a cooler only in a sealed container. How to hold heat without power.
Ice storms are their own category
Freezing rain is the winter event that removes infrastructure rather than blocking it. A quarter-inch of ice brings down branches; half an inch brings down lines and poles, and restoration in those conditions runs for days or weeks.
- Assume a multi-day outage, not an evening one.
- Stay out from under loaded trees and lines, which fail without sound.
- Do not drive. Freezing rain removes traction completely, and salt stops working at low temperatures. Preparing for an ice storm.
On the road
- Do not travel during a warning unless there is no alternative.
- Keep the tank above half all season: fuel is heat if you get stuck.
- Carry the winter kit — blankets, water, food, light, shovel, sand, phone power.
- If you get stuck, stay with the vehicle, keep the exhaust pipe clear of snow, and run the engine only a few minutes at a time. Trapped in a vehicle.
The ZonaProtec monitor shows official winter storm watches and warnings in effect at a point you search, alongside the rest of the threats near you.
Guides
- How to keep pipes from freezing and bursting A burst pipe floods a house in minutes. Which pipes are at risk, why a dripping faucet helps, and what to do if one already froze.
- How to stay warm at home without power Shrinking the space, sealing the gaps and layering clothing beats any improvised heater. And the methods that kill people every winter.
- Ice storms: why they are the worst winter storm A quarter inch of ice can bring down a region's power grid for days. What makes freezing rain different from snow and how to get ready.
Gear that covers this
Products that match what the guide above recommends.
Affiliate disclosure: As an Amazon Associate we earn from qualifying purchases. This does not change the price you pay or the recommendations we make.
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Battery carbon monoxide alarm
CO is the single largest killer in winter outages, it cannot be smelled, and a hardwired alarm stops working exactly when the risk starts.
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Zero-degree sleeping bags
One warm room with proper bags gets a household through a multi-day outage without burning anything indoors.
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Weather radio with alerts
Ice storm warnings and the outages that follow arrive overnight, and this is the season where the phone runs out first.
Frequently asked questions
What actually causes most winter storm deaths?
Not exposure in the open. The larger causes are carbon monoxide from improvised heating, traffic collisions on ice, heart attacks during snow clearing, and falls. Almost all of them come from decisions made indoors or in a driveway, not from being caught in a blizzard.
Is an ice storm worse than a blizzard?
Usually, for infrastructure. Freezing rain loads power lines and trees until they come down, and the resulting outages last days to weeks in temperatures that make a house uninhabitable fast. Snow closes roads; ice removes the grid.
How do I keep pipes from bursting?
Keep heat reaching them and keep water moving. Open cabinet doors under sinks on exterior walls, let vulnerable taps drip, keep the house above 55°F even when empty, and disconnect outdoor hoses before the first freeze.
Can I heat with the oven or a grill indoors?
No. A gas oven, charcoal grill, camping stove or generator indoors produces carbon monoxide that can kill within hours, and it is odourless. Nothing that burns fuel belongs inside a house without a permanent vent to the outside.