Overview
- Tropical Storm Jangmi made landfall in southern Wakayama early on Wednesday, June 3, producing intense linear rainbands that rapidly raised river levels.
- The Japan Meteorological Agency issued a Level 5 emergency flood warning for the Koza River, the first use of the new five‑level system, signaling an imminent danger to life in nearby towns.
- Authorities issued evacuation advisories for hundreds of thousands of residents across multiple prefectures while local governments managed sheltering and rescue readiness.
- The storm has caused injuries and damage, cut power to nearly 60,000 households, and forced mass transport and business disruptions including about 900 flight cancellations and paused factory operations.
- Forecasters warn the system will bring further heavy, highly localized rainfall — up to about 200 mm in parts of Tokai and Kanto‑Koshin — keeping flood and landslide risks high as it approaches greater Tokyo.