Expo 2027 safety plans: three first-aid posts, 36 outdoor AEDs, shelter indoors in lightning

• On 19 October the association turned its three basic plans from October 2025 into implementation plans that set out how things will run: fire and disaster prevention, medical and first aid, and venue hygiene. The English names of plans and facilities are trip-jp’s own renderings.
• Three first-aid posts: the Central Clinic in the middle of the site and the Main Gate Clinic beside the main gate open 9:30–21:30. A first-aid station in SATOYAMA Village, run from two medical containers, opens 9:30–17:00 and is staffed by nurses without a doctor. Doctors at the clinics can give IV drips. First aid on site is paid for by the association.
• Expected use: about 9,600 patients over the season, around 50 a day, 97% of them minor.
• AEDs: 36 outdoors, each covering a circle 150 m across so one can be used within three minutes of a cardiac arrest.
• Lightning: the association will watch JMA advisories, a lightning detection system and a private forecaster. When the risk rises, announcements and digital signs will direct visitors indoors or to areas with lightning shelters, with staff and guards guiding them. Wooded areas will be cleared early and closed, and outdoor events paused early. No numerical threshold for pausing is given.
• Heat: mist, spot air conditioners, tents and parasols, vending machines and water dispensers across the site, and more cooling spots, guided by the heat index.
• If visitors cannot get home: buildings checked as safe will open as temporary shelters. Stock for 72 hours assumes up to about 67,000 people on site at peak, including 210,000 meals and 180,000 litres of drinks. Shuttle buses restart in stages once routes are safe.
• Typhoons and heavy rain: shorter hours or closure will be considered one to two days before a typhoon’s closest approach. Access to the Aizawa and Izumi rivers that run through the site will be closed if water levels rise.

Our take

When we covered the safety councils’ summer meetings on 1 October, we expected the lightning plan to turn on two things: when outdoor events stop, and where people are sent. The implementation plan settles the second. Visitors go indoors or to areas with lightning shelters, and wooded areas are cleared first. On the first, it only says outdoor events will be paused “early”; there is no figure for how close a storm must be. Closure criteria are also left to a separate operating manual for the disaster headquarters. Anyone planning a summer visit around outdoor shows still cannot see where the line will be drawn.

The hours of the first-aid posts also stand out. The site stays open until 21:30, but the SATOYAMA Village station closes at 17:00, and from then the doctor at the command centre advises remotely. Evening cases go to the two clinics. With demand estimated at about 50 patients a day, we read this as a judgement that two clinics are enough after dark.

Tips for visitors

• Remember the two clinics: beside the main gate and in the middle of the site. After 17:00, if you feel unwell near SATOYAMA Village, head for one of them or ask the nearest staff member.
• From July to September, announcements and digital signs are where lightning warnings will appear. If one comes while you are in a wooded garden, move into a building first. Thunder-day figures by month are in our earlier report on the safety councils.
• If an earthquake stops the trains, the plan assumes visitors wait for directions to shelters on site rather than heading straight for the station. Seasonal conditions are covered in when to visit the Yokohama Expo.
• When a typhoon is coming, shorter hours or closure are considered one to two days ahead. Check the association’s notices the day before you go.