Record Rain Kills at Least Four in Chiba, Japan, Strands Thousands at Narita Airport

Chiba prefecture, just east of Tokyo, took a beating from rain nobody there had ever seen. The Japan Meteorological Agency issued its highest-level warning, Level 5, for the region for the first time ever, according to Channel NewsAsia and The Guardian.

The numbers back up why. More than 360mm fell in 24 hours in parts of Chiba, according to Al Jazeera and Channel NewsAsia. The Associated Press, via WBOC, reported 11.5 centimeters (4.5 inches) fell in a single hour in Chiba City, a record, and 9.7 centimeters (3.8 inches) fell in one hour in Sakura City, also a record. JMA forecast official Takuya Hosomi called the rainfall levels unprecedented at a televised emergency briefing, per AP.

The Guardian reported rain fell at a rate of 115mm an hour at one point, roughly what the region normally sees across the entire month of August.

The Death Toll

Four people are confirmed dead, according to Al Jazeera, The Guardian, and AP. Channel NewsAsia and the Japan Times, both citing local reporting Friday, put the toll at eight. That's a real discrepancy in the source record, and the article notes it rather than picking a side: as of Friday morning local time, official Chiba Prefecture Disaster Management Office statements confirmed four dead, one presumed dead after being pulled from a flooded car in Kashiwa city, and one still missing, per AP and Al Jazeera.

The confirmed victims include a man believed to be in his 60s or 70s found floating in a flooded road in Ichikawa City, and a 66-year-old woman who died after her car became trapped in floodwater in Sakura City, according to the Chiba Prefecture Disaster Management Office as reported by Al Jazeera, The Guardian, Euronews, and AP. A third victim, a man of unknown age, was found collapsed on the street, and a fourth victim's gender and age were undetermined, per Al Jazeera.

Stranded Travelers, Dead Power

This hit during Japan's Bon holiday week, one of the country's busiest travel stretches.

About 7,000 people were stranded overnight at Narita International Airport after trains stopped running, according to Euronews and The Guardian. Some slept on terminal floors. Airport staff handed out water, food, and sleeping bags, according to social media accounts cited by Channel NewsAsia. One traveler from the UK, identified only as Philip, told AFP he endured a nine-hour journey including a taxi ride before finally reaching the airport early Friday morning.

Flights at Narita were reported operating normally Friday, according to Al Jazeera and Channel NewsAsia, though Japan Airlines said some delays were possible.

The Ground Self-Defense Force dispatched buses and evacuated roughly 4,000 people stranded overnight at Soga train station, a line that also serves Tokyo Disney, according to AP. The theme park reported no damage.

Power outages hit hard. TEPCO reported outages peaked around 68,000 households before dropping to roughly 23,000 by Friday morning, according to AP. Other outlets, including Al Jazeera and Channel NewsAsia, cited figures between 22,000 and 26,000 households still without power as of Friday morning.

The Guardian reported evacuation orders covered more than 400,000 people across Chiba and surrounding areas, while Al Jazeera and AP put the shelter advisory figure at roughly 230,000 residents. Both figures come from Japanese officials; the difference likely reflects the distinction between formal evacuation orders and broader shelter advisories, though sources don't spell out the exact breakdown.

Somewhere between 45 and 80 homes flooded outright depending on the count, with dozens more reporting water seeping in below floor level, according to Euronews, Channel NewsAsia, and AP.

Officials React

Chiba Governor Toshihito Kumagai addressed the situation directly. "This case was an extremely unusual situation," he told reporters Friday morning, according to Al Jazeera and The Guardian. "I have responded to many disasters in the past, but I have never experienced a case like this."

Kazuhito Shimamoto of Japan's land, infrastructure, transport and tourism ministry warned residents near high-risk rivers to act immediately. "For rivers where the risk of flooding is already high, please take action to protect your lives in any way possible," he said, according to The Guardian.

JMA downgraded its Level 5 warning to Level 4 for most of Chiba by Friday morning as the worst rain eased, according to Euronews and the Japan Times. Level 4 landslide warnings remained active Friday evening for the cities of Chiba and Ichihara, according to the Japan Times, and JMA forecast additional rain later in the day, according to AP.

The Guardian noted that Japanese meteorologists have linked the increasing frequency of extreme rainfall events to climate change, a point not emphasized in the wire-service coverage from AP or Reuters carried elsewhere.

Authorities have not said when full rail service or power will be restored across Chiba. The fate of the one person still listed as missing by the Chiba Prefecture Disaster Management Office remains unresolved as of Friday.