Key Facts
• August 20: Extreme heat continues in mainland Japan, with highs exceeding 35°C.
• Afternoon thunderstorms expected in areas with rising temperatures.
• Northern Japan: Stationary front causes heavy rain, especially in northern Tohoku.
• Landslide warnings issued for northern Tohoku due to persistent rain.
• Southern Japan: Tropical depression moving north through East China Sea, expanding rain areas.
• Amami’s rain peak ends by morning; Kyushu sees rain throughout the day.
• Localized thunderstorms with lightning and strong winds expected in Kyushu.
• Heat alerts issued for 19 prefectures; temperatures may exceed body temperature.
• Forecasted highs: 38°C in Maebashi, Kumagaya, Kofu; 37°C in Saitama, Nagoya, Gifu.
• Afternoon instability may cause sudden downpours, flooding roads in low-lying areas.
Summary
On August 20, mainland Japan faces continued extreme heat, with temperatures exceeding 35°C in many areas. Afternoon thunderstorms are likely due to rising temperatures. Northern Japan, particularly northern Tohoku, experiences heavy rain from a stationary front, raising landslide risks. Southern Japan sees rain expanding from Amami to Kyushu due to a tropical depression. Localized thunderstorms with lightning and strong winds are expected. Heat alerts are issued for 19 prefectures, with highs reaching 38°C in Maebashi, Kumagaya, and Kofu. Afternoon weather instability may lead to sudden downpours and road flooding. Residents are advised to stay vigilant against heatstroke and sudden weather changes.
