Snow Country Survival: Heavy Snow and Winter Power Outages in Japan
Japan's "snow country" gets some of the heaviest snowfall in the world. When a blizzard knocks out the power, the biggest danger is the cold itself. Here is how to stay warm and safe until help arrives.
Hokkaido, Tohoku, Hokuriku, and many mountain areas make up Japan's gosetsu (heavy-snow) regions. Winters here can bring several metres of snow, and a strong storm can cut power and block roads for days. If you live in or visit these areas, a few simple preparations can make the difference between an uncomfortable night and a real emergency.
No power means no heat â stay warm safely
In snow country, a winter blackout is dangerous mainly because most heating stops working. Without heat, hypothermia becomes a real risk, especially for children and older people. Prepare a "warm-without-electricity" kit: plenty of warm layers, blankets and emergency (foil) blankets, and hand warmers (kairo). If you keep a non-electric heat source, learn to use it safely before you ever need it â do not test it for the first time in the dark.
Ventilation and carbon-monoxide safety
Kerosene and gas heaters produce carbon monoxide, an invisible, odourless gas that can kill. Always ventilate the room while using them, even though it feels wasteful of heat. Never burn charcoal indoors, and never bring a camping stove inside to keep warm â these are common causes of poisoning every winter.
Heavy snow can bury the outdoor exhaust vents and gas flues of your heating equipment. When they are blocked, carbon monoxide can flow back into your home. Check regularly and clear snow away from all exhaust and intake vents.
Roof snow removal is dangerous
Clearing snow from roofs (yuki-oroshi) causes serious falls â and deaths â every winter in Japan. If you must do it, never work alone. Use a safety harness or lifeline, have someone watching, and be extremely careful near the edges. Whenever possible, hire experienced people rather than attempting a heavy or high roof yourself.
Cars in heavy snow
If your car gets stuck in snow, do not idle the engine to keep warm: if snow blocks the exhaust pipe, carbon monoxide can seep into the car. Clear the tailpipe first, and run the engine only briefly with a window cracked. Keep a winter car kit ready â a shovel, snow chains, warm gear, food, and water â in case you are stranded on a blocked road.
Stock extra supplies and watch the warnings
Because heavy snow can cut roads and stop deliveries for days, keep more food, water, and heating fuel on hand in winter than you would in other seasons. Follow heavy-snow warnings from the authorities and avoid unnecessary travel when a big storm is forecast â the safest place is usually a warm home you have already prepared.
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Disclaimer
This article is general information, not official advice. During an emergency, follow the latest instructions from Japanese national and local authorities.