Winter storms kill through four primary mechanisms: vehicle stranding (hypothermia), heating failure (hypothermia), carbon monoxide poisoning from improper indoor heating, and physical injury from ice. This guide covers the specific preparation for each risk, including the heating alternatives that are safe for indoor use and those that are not.
Storm Type and Risk Profile
| Storm type | Primary hazard | Power outage risk | Duration |
|---|---|---|---|
| Blizzard (heavy snow + 35+ mph wind) | Vehicle stranding, structural snow load | High (wind + snow weight on lines) | 1–3 days |
| Ice storm (freezing rain) | Tree and power line damage, falls | Very high — ice adds 500 lbs/tree | 3–10 days |
| Polar vortex (extreme cold, little snow) | Pipe freezing, heating system overload | Medium (demand overload) | 3–7 days |
| Nor’easter (East Coast coastal storm) | Combination of all above | High | 2–5 days |
Ice storms are the most damaging to infrastructure. A quarter-inch of ice on power lines adds 500 lbs per 100 feet of line. During the 1998 Quebec Ice Storm, power was out for 4–6 weeks in some areas — far exceeding most emergency plans.
Alternative Heating: Indoor-Safe vs Carbon Monoxide Risk
More people die of carbon monoxide poisoning during winter storms than from the cold directly. CO is produced by incomplete combustion — any fuel-burning heater produces CO in enclosed spaces.
- DO NOT use indoors: Propane or kerosene salamander-style heaters without a direct vent, charcoal grills (killed during every major ice storm), gas stoves for heating, gasoline generators (the #1 CO killer after storms)
- SAFE for indoor use: Electric space heaters (if power is available), electric blankets, wood stoves with proper chimney (not wood in a fireplace that is not designed for continuous burning), direct-vent propane heaters (Mr. Heater Big Buddy with CO detector, proper ventilation)
Mr. Heater Big Buddy (MH18B): The standard indoor-rated propane heater for emergency heating. Requires ventilation — crack a window 1 inch when running. Has a built-in oxygen depletion sensor that shuts off the unit before CO builds to dangerous levels in the immediate area. Operating cost: approximately $1–2 per hour on 1 lb cylinders; more efficient with a 20 lb tank adapter.
Battery-powered CO detector placement: If using any fuel-burning heater indoors, install a battery-powered CO detector in the room where it’s used and in each sleeping area. The Kidde 2070-VDSR is battery-powered and reliable. CO symptoms (headache, nausea, dizziness) are easily confused with flu — if symptoms appear when heater is running, evacuate and call 911.
Heating Efficiency Without Power: The Warm Room Strategy
Rather than trying to heat an entire house without power, concentrate body heat in a single small room (the warm room). Close doors between rooms. Hang blankets over doorways. One or two people sharing a small bedroom with a single propane heater can maintain survivable temperatures in 0°F outdoor conditions using only one 1 lb propane cylinder per 4–6 hours.
Room insulation improvement: Place towels or draft stoppers at door bases. Heavy curtains on windows reduce thermal loss. Sleeping bags or multiple blankets plus appropriate sleeping bag liner in the warm room allow survivable overnight conditions without active heating if CO is a concern.
Pipe Freezing: Prevention and Thawing
Pipes freeze when ambient temperature around the pipe drops below 28°F (−2°C) for sustained periods. At-risk pipes are those in unheated spaces: exterior walls, attics, crawl spaces, and garages.
Prevention:
- Open cabinet doors under sinks on exterior walls — exposes pipes to interior warm air
- Maintain indoor temperature at minimum 55°F even if traveling — the break-even cost of heat versus a burst pipe repair ($500–5,000) makes the gas bill irrelevant
- Let faucets drip (cold water only) during extreme cold — moving water freezes at lower temperatures than still water
- Pipe heat tape on known problem pipes: self-regulating electric heat tape (~$1.50/linear foot) prevents freezing in exposed sections
Thawing a frozen pipe: Apply heat starting from the faucet end, working back toward the frozen section. Use a hair dryer, heat lamp, or warm towels. Never use an open flame — the pipe and surrounding materials can burn. Know where your main water shutoff is and turn it off immediately if a pipe bursts.
Vehicle Preparedness for Winter Stranding
Vehicle stranding during a blizzard is a common winter emergency. Maintain a winter vehicle kit:
- Wool blanket or sleeping bag rated for 0°F
- Hand and foot warmers (HeatMax brand: 7–10 hours per pair)
- Snow shovel (folding), sand or kitty litter for traction
- Jumper cables or battery jump pack
- Bright emergency flag or LED flares for visibility
- Water and 2,000 kcal of food
If stranded: Stay with your vehicle unless you can see shelter within 100 yards. Run the engine 10 minutes per hour for heat — clear the exhaust pipe of snow first (blocked exhaust causes CO buildup in the passenger compartment). Tie a brightly colored cloth to the antenna for rescue visibility.
Winter Storm Supply List
- Alternative heat source (Mr. Heater Big Buddy) + 20 lb propane tank with adapter hose
- Battery-powered CO detector (required when using any combustion heater indoors)
- 7-day water supply (pipes may freeze, municipal pressure may drop)
- 7-day food supply (no-cook options if stove gas is off)
- Sleeping bags rated to 0°F for each person
- Generator + 5-gallon fuel for refrigerator and device charging (run outdoors only)
- Ice melt (calcium chloride works to −25°F; rock salt works only to 20°F)
- Shovels: 1 per adult household member
Where to Go Next
Emergency power options for extended winter outages — generator sizing and solar backup — are in emergency power: generators, solar panels, and battery banks. No-cook food planning for when cooking appliances are unavailable is in no-cook emergency food: 72-hour meal plan at 2,000 kcal/day.
