Unprecedented rainfall in Japan leaves at least four dead in Chiba prefecture

Unprecedented Rainfall in Japan's Chiba Prefecture Leaves Four Dead and Thousands Stranded

Record-breaking rainfall in Japan's Chiba prefecture has left at least four people dead, caused widespread disruption, and stranded thousands of travellers, according to reports from Africa News and The Guardian. The extreme weather, described by the Japan Meteorological Agency as potentially "unprecedented," swept through the region with intense downpours that overwhelmed infrastructure and triggered emergency responses.

In Chiba, near Tokyo, a man in his 60s or 70s was found dead in floodwater, and a 66-year-old woman died after becoming trapped in her submerged car, the Chiba disaster management office reported. The Guardian also confirmed 13 deaths across the affected areas, with at least three people found trapped inside vehicles and one person still missing.

The rainfall was particularly intense in Chiba city, where 115mm fell in a single hour on 13 August, breaking local records. The nearby city of Sakura also saw 97mm in one hour, surpassing its previous recordched. The Japan Meteorological Agency described the event as potentially unprecedented, and local authorities issued a level five emergency warning – the highest on the scale – for the first time since the system was introduced. This was downgraded to level four on Friday morning, but officials warned that the risk of further flooding and landslides remained.

The impact on infrastructure was severe. Nearly 26,000 households in Chiba were left without power, and more than 20,000 in the prefecture experienced outages. Flooding damaged dozens of homes, with 45 houses inundated and 39 others reporting water entering below floor level. Hundreds of residents spent the night in shelters or at Chiba station after rail services were suspended.

The disruption was especially acute at Narita Airport, where about 7,000 travellers were stranded overnight after train cancellations. Many slept on terminal floors, while in rural areas more than a dozen cars were abandoned on flooded roads. The scene at Chiba station saw hundreds seeking refuge, according to reports.

Local authorities issued an evacuation advisory affecting more than 100,000 households, though the highest-level warning was downgraded to level four on Friday morning. Despite the easing of the alert, the Japan Meteorological Agency cautioned that the risk of further flooding and landslides remained.

The heavy rains were part of a broader weather pattern that also affected South Korea, with record-breaking rainfall in the region. The Guardian noted that warm and moist air meeting cooler air over Japan contributed to the severity, a phenomenon not unfamiliar to the country. However, the scale of this event, with nearly 26,000 households left without power and 45 homes flooded, has underscored the vulnerability of even well-prepared regions to extreme weather.

At Narita Airport, about 7,000 travellers were stranded overnight after train services were suspended, with many sleeping on terminal floors. Hundreds of others sought refuge in shelters or at Chiba station. In rural areas, over a dozen cars were abandoned on flooded roads.

While the highest-level warning was downgraded to level four on Friday morning, the Japan Meteorological Agency warned that the risk of further flooding and landslides remained. The full extent of the damage continues to unfold as authorities assess the aftermath of the unprecedented rainfall.