Japan Heavy Rain: Ishikawa, Toyama on Highest Alert as Record Flooding Hits
AM730 · 2 SOURCESabout 2 hours ago5 MIN

Summary
The Japan Meteorological Agency issued its highest-level "5级" emergency heavy rain warning for Ishikawa and Toyama prefectures on Thursday morning, with conditions reaching such severity that residents were urged to flee to safety immediately. The warning, downgraded from level 5 to level 3 by late afternoon, followed unprecedented rainfall that shattered historical records. More than a dozen rivers burst their banks, triggering landslides that cut off entire communities and left hundreds of residents stranded.
Key Points
- Ishikawa's Hakui City recorded 325.5mm of rainfall in 24 hours, while Toyama's Hiiime City saw 331.5mm, both setting new records
- Toyama's Hiiime City logged 354mm in just 12 hours, exceeding its previous record by over 50 percent
- Japan's Ministry of Land, Infrastructure, Transport and Tourism confirmed at least 13 rivers across both prefectures have flooded
- Multiple communities, including Sugata and Kogahara districts, were completely isolated when landslides blocked all access roads
- JR train services on the Hiiime, Johana and Takayama lines were suspended for the entire day, while schools in Toyama and Imizu cities closed
- Emergency services in Hiiime City received multiple calls from residents reporting floodwaters reaching chest height
- A wooden house in the Aio district was severely damaged when a landslide caused it to tilt dangerously, with fallen trees resting on its roof
Why It Matters
The unprecedented rainfall follows a series of extreme weather events across Japan over the past two weeks, including the "century rainfall" in Chiba Prefecture that killed 13 people. Climate patterns are increasingly producing concentrated, intense downpours that overwhelm drainage systems and trigger cascading disasters. For Hong Kong travellers and businesses with operations in Japan, this event underscores the growing need to monitor weather alerts closely and maintain flexible travel or supply chain arrangements during the summer rainy season.
The unprecedented rainfall follows a series of extreme weather events across Japan over the past two weeks, including the "century rainfall" in Chiba Prefecture that killed 13 people. Climate patterns are increasingly producing concentrated, intense downpours that overwhelm drainage systems and trigger cascading disasters. For Hong Kong travellers and businesses with operations in Japan, this event underscores the growing need to monitor weather alerts closely and maintain flexible travel or supply chain arrangements during the summer rainy season.