Record Rainfall in Japan Disrupts Airports and Cuts Power

Japan — August 14, 2026

Japan is facing a major weather emergency after record-breaking rainfall battered Chiba Prefecture, east of Tokyo, causing severe flooding, transport disruption, power outages and deaths.

More than 360mm of rain fell in parts of Chiba within 24 hours, with rainfall in some locations exceeding 100mm in a single hour. The Japan Meteorological Agency issued its highest-level heavy-rain warning for the region, describing the situation as extremely unusual.

Thousands stranded at Narita Airport

The torrential rain caused widespread flooding around Narita International Airport, one of the main gateways serving Tokyo. Approximately 7,000 travellers were stranded overnight after flooding disrupted railway and road connections.

Airport staff provided passengers with sleeping bags, water and food as many were forced to spend the night inside the terminals. Although transport links were severely affected, reports indicated that most flights were expected to operate on Friday, with some rail services gradually resuming.

Power outages and widespread flooding

The rainfall also damaged critical infrastructure. Thousands of homes lost electricity after floodwaters affected power facilities, while gas supplies were temporarily disrupted for thousands of households. Roads and railway lines were submerged, forcing closures and creating major traffic congestion.

Emergency services and Japan's Self-Defense Forces were deployed to assist with rescue and evacuation operations. Authorities issued evacuation orders and urged residents in vulnerable areas to remain alert to continuing flooding and landslide risks.

Deaths reported as emergency response continues

The extreme weather has also resulted in fatalities, with reports of people being found in flooded vehicles and on inundated roads. The reported death toll changed as authorities continued confirming victims, highlighting the rapidly developing nature of the disaster.

Although rainfall eased in some areas, authorities warned that rivers could remain dangerously high and that further rainfall could worsen flooding.

A warning about extreme weather

The disaster comes during one of Japan's busiest holiday travel periods, making the disruption particularly severe. It has also renewed concerns about the increasing impact of extreme weather on densely populated communities and critical infrastructure.

Japan is highly experienced in dealing with earthquakes, typhoons and floods, but the scale and intensity of this rainfall demonstrate how quickly extreme weather can overwhelm transport networks, airports, power systems and emergency services.

As rescue and recovery operations continue, authorities are urging residents to follow evacuation instructions, avoid flooded roads and remain vigilant for further flooding and landslides.

Source: Reuters, Associated Press and other reports published August 14, 2026.