Typhoon No. 6 caused partial suspensions and speed reductions across several major railway lines in the Greater Tokyo area on June 3, 2026 [1].
These disruptions affect millions of commuters in Japan's capital region, where the railway network is critical for daily transit and economic activity. The weather system, also known as Chanmee, has brought dangerous conditions that threaten the safety of high-speed and conventional rail operations.
JR East reported service impacts on the Yamanote Line and the Chuo Line. The Shonan-Shinjuku Line faced specific disruptions on the sections between Ikebukuro and Zushi, as well as between Omiya and Odawara [1, 2]. As of 13:30 JST, the company continued to monitor the status of the Yamanote Line [1].
Beyond conventional lines, operators issued warnings regarding possible disruptions on the Tokaido Shinkansen corridor [1, 3]. The high-speed rail line is particularly sensitive to the strong winds and heavy rain accompanying the storm.
Weather forecasts for the Kanto-Koshin area indicated maximum instantaneous wind speeds of 35 m/s [5]. Additionally, rainfall amounts of 300 mm prompted warnings across the Kanto region [6]. These conditions led to track flooding and significant safety concerns for rail operators.
Railway officials said the measures were necessary to ensure passenger safety amidst the volatile weather. The combination of heavy precipitation and high wind speeds often necessitates speed restrictions or total halts to prevent derailments or infrastructure damage.
“Typhoon No. 6 caused partial suspensions and speed reductions across several major railway lines”
The suspension of core arteries like the Yamanote and Shonan-Shinjuku lines demonstrates the vulnerability of Tokyo's high-density transit system to extreme weather. As Typhoon No. 6 brings rainfall and wind speeds that exceed safety thresholds, the proactive slowing of the Tokaido Shinkansen suggests a priority on risk mitigation over schedule adherence, which typically results in widespread regional economic delays.
