Two simultaneous typhoons struck the Pacific side of Japan on June 27, causing landslides and road collapses across several prefectures [1, 2, 3].
The rare double-typhoon event underscores the vulnerability of Japan's coastal infrastructure to extreme weather and the potential for compounded disaster risks.
Typhoon No. 7 and Typhoon No. 8 brought heavy rainfall and strong winds to the Kanto region. In Choshi City, Chiba Prefecture, the 24-hour rainfall total for June set a new record for the month [1]. The intense precipitation triggered a riverbank landslide in the city, leading four residents to voluntarily evacuate [2].
Infrastructure damage was reported in multiple locations. A section of the Kanto Expressway near Mobara City experienced a road collapse, and landslides were reported in residential areas of Yokosuka City in Kanagawa Prefecture [1, 2, 3]. These events led to partial road closures as authorities worked to secure the affected areas.
Reports on casualties vary by region. While some reports indicated no injuries in the areas covered by ANNnewsCH [1], other sources said a 70-year-old man in Yamaguchi Prefecture was missing following a landslide [3].
The storms also affected other regions, including Osaka and Yamaguchi [4]. Local authorities continued to monitor soil stability in mountainous areas where the heavy rain increased the risk of further slope failures [1, 2].
“Two simultaneous typhoons struck the Pacific side of Japan on June 27”
The simultaneous approach of two typhoons creates a complex meteorological scenario that can amplify rainfall totals and wind speeds beyond the impact of a single storm. This event highlights the ongoing challenge for Japan's regional governments to manage evacuation and infrastructure repair when multiple disaster zones emerge concurrently across different prefectures.
