Dangerous Heat Persists in Japan: Intense Heatwaves Continue in Kanto and Western Regions

This summer, Japan is experiencing unprecedented and dangerous heat, with particularly intense heatwaves persisting in the Kanto and western regions. Temperatures exceeding 35°C have become commonplace, with some areas witnessing temperatures surpassing human body temperature. This article delves into the latest research on this scorching heat and its underlying causes.

1. 2024 Summer Weather Conditions

The summer of 2024 is predicted to have temperatures significantly higher than average across Japan. According to Weathernews, the period from July to September is expected to be exceptionally hot, rivaling last year’s record-breaking heat. This abnormal heat is primarily attributed to the overlapping of the Tibetan High and the Pacific High, creating a “double high-pressure” system. This weather pattern is expected to bring prolonged periods of heat exceeding 35°C, with some regions potentially experiencing temperatures near 40°C​ (ウェザーニュース)​​ (ウェザーニュース)​.

2. Impact of High-Pressure Systems

The Pacific High typically extends northward in July, leading to the end of the rainy season in many areas and ushering in intense heat in Kanto and western Japan​ (ウェザーニュース)​. In August, the Tibetan High is expected to strengthen its influence over Japan, intensifying the heat further. This period is anticipated to witness a rise in the number of extremely hot days, especially in inland areas of Honshu​ (ウェザーニュ自分たちで行けばいいだろうース)​.

3. Influence of Sea Surface Temperatures

This year, the sea surface temperatures around Japan are higher than average, particularly along the Pacific coast of northern Japan. This elevated sea temperature prevents the lower atmosphere from cooling effectively, contributing to sustained high temperatures, especially in northern Japan​ (ウェザーニュース)​.

4. Effects of Heatwaves and Countermeasures

The extreme heat poses serious health risks, particularly to the elderly and children, who are more susceptible to heatstroke. It is essential to stay hydrated and use air conditioning appropriately. Even short outdoor activities require adequate precautions​ (tenki.jp)​. With the number of heat-related emergency cases on the rise, local governments are actively issuing warnings and advisories.

5. Latest Observations

On July 27, over 200 locations in western and eastern Japan recorded temperatures exceeding 35°C, with some places like Nara and Shizuoka seeing temperatures rise above 38°C​ (ウェザーニュース)​​ (tenki.jp)​. This intense heat is expected to continue, with the peak anticipated in early August​ (tenki.jp)​.

Conclusion

The summer of 2024 is shaping up to be as severe as last year’s, with dangerous heatwaves persisting, especially in Kanto and western regions. This extreme heat is driven by the overlapping of the Tibetan and Pacific Highs and elevated sea surface temperatures. To mitigate health risks, it is crucial to stay informed about the latest weather updates, stay hydrated, and use cooling measures effectively. Stay safe and take all necessary precautions during this exceptionally hot summer.

References:

FNN Prime Online – National Heatwave Information

Weathernews – 2024 Summer Weather Forecast

Japan Meteorological Society – Heatwave Impacts and Measures