Japan Earthquake Preparedness Kit: Guide for Japan Residents
Japan sits at the intersection of four tectonic plates: the Pacific, Philippine Sea, Eurasian, and North American: making it one of the most seismically active countries on Earth. The 2011 Tōhoku earthquake (magnitude 9.0) triggered a tsunami that killed nearly 20,000 people and caused the Fukushima nuclear disaster. Japan experiences an average of 1,500 noticeable earthquakes per year. Despite: and because of: this, Japan has developed the world’s most sophisticated earthquake preparedness culture: mandatory earthquake drills in schools, advanced early warning systems, earthquake-resistant building codes, and a society-wide understanding of preparedness basics. This guide distils the best of Japanese earthquake preparedness wisdom into a practical earthquake kit Japan guide for residents and expatriates.
Japan’s Seismic Risk Profile
- Tokyo / Kanto region: The Tokyo Metropolitan Area sits over the Sagami and Philippine Sea plates; MLIT estimates a 70% probability of a magnitude 7.3 or greater earthquake directly beneath the Tokyo area within 30 years; the last major Tokyo earthquake (Great Kanto Earthquake, 1923) killed 140,000 people
- Osaka / Kansai region: The Uemachi Fault runs directly beneath Osaka; MLIT estimates 2–6% probability of a major Uemachi Fault rupture within 30 years
- Pacific Coast (Tokai / Nankai Trough): The Nankai Trough mega-subduction zone is projected to produce a M8.0–9.1 earthquake: potentially the largest earthquake in Japanese recorded history: with a 70–80% probability within 30 years; associated tsunami would affect much of the Pacific Coast from Shizuoka to Kochi
- Hokkaido: Cascadia-like subduction zone on the Pacific Coast; 2018 Hokkaido Eastern Iburi earthquake (M6.7) caused widespread liquefaction and landslides
Japan’s Earthquake Early Warning (EEW) System
Japan operates the world’s most advanced earthquake early warning system, managed by the Japan Meteorological Agency (JMA):
- The EEW detects P-waves (initial, less damaging seismic wave) and issues warnings to mobile phones, TV, and radio within seconds: before the destructive S-waves arrive
- Mobile phones registered with Japanese carriers receive EEW alerts automatically (a distinctive loud buzzing tone followed by a warning message)
- Warning time ranges from a few seconds to over 60 seconds depending on proximity to the epicentre
- The correct response: Drop, Cover, Hold On immediately upon receiving the alert; do not wait to feel shaking
- Expatriates should ensure their Japanese mobile phone’s emergency alert system is enabled; some older or foreign-carrier SIM configurations may not receive EEW: confirm this with your carrier
The Japanese Preparedness Approach
Japanese earthquake preparedness culture has several distinctive elements worth adopting regardless of your nationality:
- Helmet beside the bed: A significant proportion of Japanese earthquake injuries are head injuries from falling objects during the shaking; many Japanese households keep a protective helmet in the bedroom for immediate donning during a nighttime earthquake
- Shoes beside the bed: Glass breaks during earthquakes; walking barefoot over broken glass is one of the most common post-earthquake injuries; Japanese preparedness culture keeps indoor shoes or slippers accessible for immediate use after a quake
- Two bags: Japanese preparedness guidance recommends two bags: a primary go-bag (hijōjibukuro) for evacuation, and a stay-home kit (zaibukuro) for sheltering in place; not everything needs to be portable
- Neighbourhood preparedness (jishukai): Self-governing neighbourhood associations in Japan organise regular earthquake drills; knowing your neighbours and participating in local preparedness is a core element of Japanese resilience
- Annual preparedness shopping: Many Japanese families review and restock their emergency supplies around September 1 (Disaster Prevention Day, commemorating the Great Kanto Earthquake): a good practice to adopt regardless of country
Designated Evacuation Sites (Hinanbasho)
Japan has a comprehensive network of designated evacuation sites (避難場所, hinanbasho) and evacuation shelters (避難所, hinanjo) operated by municipalities:
- Hinanbasho are outdoor open spaces (parks, school grounds) where residents gather immediately after a large earthquake: they are typically not sleeping facilities
- Hinanjo are buildings (schools, community centres) where residents can shelter for days to weeks if their homes are damaged
- Find your nearest designated evacuation sites through your ward office (kuyakusho) website or the official hazard map portal (hazardmap.city.tokyo.lg.jp for Tokyo; similar sites for other municipalities)
- Know the route from your home to your nearest hinanbasho before an earthquake; practice the walk
- Register with your ward office if you are a foreign resident: some municipalities maintain contact lists for foreign residents for welfare checks and information distribution after major disasters
Japanese Emergency Bag (Hijōjibukuro)
The standard Japanese emergency bag recommendation covers 3 days at the evacuation shelter, with the expectation that government relief systems will be operational by day 3–5:
- Water: 500ml bottles × 6 per person (3 days at minimum); store additional water at home for shelter-in-place
- Emergency rations (non-perishable): onigiri (rice balls in retort pouch), crackers, chocolate, nuts
- Portable water filter (LifeStraw or Sawyer)
- First aid kit (compact)
- All prescription medications × 7 days
- Rain poncho × 1 per person
- Emergency mylar blanket × 2 per person
- Work gloves (leather or heavy cotton) × 1 pair per person
- Helmet or hard hat × 1 per person (protective headwear is specifically recommended in Japan)
- Slippers or indoor shoes × 1 pair per person (for broken glass in post-quake environment)
- Flashlight + headlamp
- Portable radio (hand-crank preferred)
- Power bank (charged)
- Copies of residence card (Zairyu card) for foreign residents; My Number card; health insurance card; bank card
- Cash (¥10,000+ in small bills): ATMs will be inaccessible
- Whistle × 1 per person
- Toilet paper + wet wipes × large supply (evacuation shelter sanitation)
- Change of clothing × 1 set per person
- Toothbrush + soap + hand sanitiser
- N95 masks × 10 per person
- Portable battery-powered radio
Apartment Prep in Japanese Cities
Most Tokyo, Osaka, and Nagoya residents live in apartments (mansions or apāto) with specific constraints:
- Modern Japanese building standards: Structures built after the 1981 New Earthquake Resistance Standards (Shinsai Taisaku) have excellent seismic performance; post-2000 structures with additional long-period ground motion standards are the safest; if you rent, ask about your building’s construction year and earthquake resistance certification
- Furniture securing: Even in earthquake-resistant buildings, furniture falls and objects become projectiles; use L-shaped furniture brackets (家具転倒防止) to anchor bookshelves, dressers, and refrigerators: available at home centres (Cainz, Kohnan, Nitori) and on Amazon Japan
- Non-slip furniture feet: Earthquake-rated non-slip pads under furniture (particularly TV stands and furniture on hard floors) prevent lateral movement during shaking
- Elevator failure: After a major earthquake, building elevators automatically stop and require inspection before resuming service: this may take hours to days; high-floor residents must be able to descend by stairwell with their emergency bag
Recommended Products for Japan Earthquake Preparedness
Tanizawa ST#141-ESV Protective Helmet (Japanese Standard)
Japanese earthquake preparedness culture specifically recommends a protective helmet as part of every household’s earthquake preparedness kit: the helmet worn during or immediately after a quake protects against head injuries from falling objects, a leading cause of earthquake injury. The Tanizawa ST#141-ESV meets Japanese industrial safety standards (JIS T8131) and is widely used in Japanese preparedness kits. Keep one on a hook beside your bed; the reflexive action during an earthquake alert is to put on the helmet before Drop, Cover, and Hold On. This habit is taught in Japanese schools and is worth adopting for any earthquake-zone resident, regardless of nationality.
- JIS T8131 certified Japanese safety helmet standard
- Japanese preparedness culture specifically recommends bedside helmet storage
- Protects against falling object head injuries: a leading earthquake injury type
Midland ER310 Emergency Crank Weather Radio
A hand-crank emergency radio is a standard component of the Japanese hijōjibukuro (emergency bag): it receives emergency broadcasts when cellular networks are overloaded (as they were within seconds of the 2011 Tōhoku earthquake, when cell circuits were saturated for hours) and operates without batteries or power. NHK Radio 1 (594 kHz AM in Tokyo) is Japan’s primary disaster broadcast channel. The Midland ER310 receives AM and FM bands, operates via solar, crank, or battery, and includes USB phone charging: covering the primary communication needs during a Japanese earthquake emergency. For AM reception of NHK Radio 1, ensure the radio is set to AM mode; in Japan this is the highest-reliability information channel post-disaster.
- AM/FM; solar + crank + battery: works when cellular overloads post-quake
- Receives NHK Radio 1 AM: Japan’s primary disaster broadcast channel
- USB phone charging; standard Japanese emergency bag component
Japan Earthquake Preparedness FAQ
What should I do if I’m in Tokyo when a major earthquake hits?
Immediately upon feeling strong shaking or receiving an EEW alert: Drop under a sturdy table or desk, Cover your head and neck with your hands if no table is available, and Hold On until shaking stops. Do not run outside during shaking: most outdoor earthquake injuries come from falling glass, signage, and roof tiles. After shaking stops: check for injuries; check for gas leaks (smell; if gas is detected, open windows and do not operate electrical switches: exit and call 119); grab your hijōjibukuro; follow your building’s evacuation procedure if building damage is suspected. Cell networks will likely be saturated: use the disaster message board (NTT 171 service) to let family know you’re safe rather than voice calls. Walk to your designated hinanbasho if you need to evacuate rather than driving: Tokyo’s roads will be gridlocked within minutes of a major earthquake.
As a foreign resident in Japan, are there special preparedness steps I should take?
Yes: several preparedness steps are particularly important for foreign residents: (1) Register with your ward office as a foreign resident and ask about their foreign resident emergency notification service; many Tokyo wards maintain multilingual emergency communication channels; (2) Download the Safety Tips app (NHK’s multilingual disaster information app in English, Chinese, Korean, and other languages): it receives J-Alert and earthquake early warnings in your language; (3) Register your home country’s emergency contact (embassy or consulate) and inform your family abroad of your address and emergency contact plan; (4) Know your nearest hinanbasho and walk there once before any emergency; (5) Carry your Zairyu card (residence card) copies in your emergency bag: identification is required for access to some evacuation facilities; (6) Ensure your Japanese phone SIM is registered to receive EEW alerts from your carrier.