Key facts
- Tropical Storm Dujuan is expected to regain typhoon strength by Tuesday morning.
- Sustained winds could reach 80mph (129km/h), with gusts approaching 100mph.
- The Izu Islands are under evacuation warnings due to heavy rain, flooding, and landslide alerts.
- About 200mm (7.9in) of rain is possible along the southern coasts of the Chubu and Kanto regions in 24 hours.