Key Facts
• Japan Meteorological Agency issued a weather alert on the morning of August 27.
• Heavy rain and thunderstorms expected from midday to late night in Kanto-Koshin.
• Potential risks: flooding in low-lying areas, river swelling, and landslides.
• Forecasted hourly rainfall (maximum):
– Northern Kanto: 60 mm
– Southern Kanto: 30 mm
– Koshin: 30 mm
• Predicted 24-hour rainfall (by 6 a.m. August 28):
– Northern Kanto: 100 mm
– Southern Kanto: 50 mm
– Koshin: 50 mm
• Atmospheric instability caused by warm, moist air and rising temperatures.
• Safety measures: avoid areas near rivers, move indoors during thunderstorms.
• Hail and strong gusts, including tornadoes, are possible.
• Farmers advised to protect crops and facilities from hail damage.
Summary
The Japan Meteorological Agency has warned of severe weather in the Kanto-Koshin region on August 27, with heavy rain and thunderstorms expected from midday to late night. The unstable atmosphere, influenced by warm, moist air and rising temperatures, may lead to localized flooding, river swelling, and landslides. Hourly rainfall could reach up to 60 mm in northern Kanto, with 24-hour totals potentially hitting 100 mm. Residents are urged to stay vigilant, avoid hazardous areas, and take shelter during thunderstorms. Farmers should take precautions against hail damage. The agency emphasizes the importance of safety measures to mitigate risks from lightning, strong winds, and potential tornadoes.
