Key Facts
• Tropical cyclone expected to become a typhoon within 12 hours (as of September 3, 3 PM).
• Predicted to approach Kanto-Koshin region by the afternoon of September 5.
• Maximum wind speeds: 15 m/s (54 km/h), gusts up to 23 m/s (83 km/h).
• Rainfall forecast (September 4-5):
– Southern Kanto: 200 mm
– Northern Kanto: 60 mm
– Koshin: 150 mm
– Izu Islands: 80 mm
• Rainfall forecast (September 5-6):
– Northern Kanto: 60 mm
– Southern Kanto: 60 mm
– Izu Islands: 60 mm
• Maximum wind speeds on September 5:
– Offshore Kanto: 18 m/s (65 km/h), gusts up to 25 m/s (90 km/h)
– Izu Islands: 18 m/s (65 km/h), gusts up to 25 m/s (90 km/h)
– Onshore Kanto: 15 m/s (54 km/h), gusts up to 25 m/s (90 km/h)
• Wave height forecast for Izu Islands on September 5: 4 meters with swells.
• Public advised to prepare for flooding, landslides, lightning, hail, and tornadoes.
Summary
A tropical cyclone is expected to intensify into a typhoon and approach the Kanto-Koshin region by the afternoon of September 5. Heavy rainfall, strong winds, and high waves are forecast, with southern Kanto potentially receiving up to 200 mm of rain. The Izu Islands may experience 4-meter-high waves with swells. Authorities warn of potential flooding, landslides, and severe weather phenomena such as tornadoes and hail. Residents are urged to take precautions, monitor weather updates, and ensure safety measures are in place.
