Overview
- Jangmi struck the southern part of Wakayama on Wednesday morning at around 4:30 a.m. JST as a typhoon with winds near 126 km/h before weakening while moving northeast.
- The Japan Meteorological Agency and Wakayama prefecture issued a Level 5 emergency flood warning for the Koza River, the first use of the new five‑level flood system, with some river sections later downgraded as conditions changed.
- Local governments issued evacuation advisories and orders to hundreds of thousands of people across eight prefectures, with roughly 370,000 residents urged to relocate from parts of Shikoku to the Tokyo region.
- The storm knocked out power for nearly 60,000 households, forced almost 900 flight cancellations, suspended multiple rail services including some Shinkansen routes, and prompted temporary factory shutdowns at major automakers.
- Authorities reported dozens of injuries and scattered damage as they continue on‑the‑ground assessments, and the JMA warned of up to 200 mm of rain in parts of Tokai and Kanto‑Koshin with linear rainbands likely to produce even higher local totals.