Seven locations in Japan's Tokai region recorded temperatures of 40°C or higher on the afternoon of July 23 [1].
This extreme heat wave poses a significant public health risk, prompting authorities to issue maximum vigilance warnings to prevent heat-stroke across the region.
The highest temperature was recorded in Sakuma, where the mercury hit 41.1°C [1]. According to the Japan Meteorological Agency, this figure represents the highest temperature recorded nationwide so far this year [3].
The locations that reached or exceeded the 40°C threshold include Sakuma and Hamamatsu in Shizuoka, Mino, Tajimi, and Kanayama in Gifu, Toyota in Aichi, and Kuwana in Mie [4]. While some reports listed six locations, other records confirm seven sites reached the mark [1].
This event marks the highest number of days with temperatures of 40°C or more recorded in the month of July [1].
Local officials and weather services are urging residents to take immediate precautions. "Maximum vigilance is required for heat-stroke," said a voice-over from ANNnewsCH [2].
The extreme weather is expected to persist. Forecasts indicate that the Tokai region could see temperatures reach 40°C again on July 24, leading to further extreme heat days [2].
“Seven locations in Japan's Tokai region recorded temperatures of 40°C or higher”
The concentration of extreme heat across four different prefectures in the Tokai region suggests a severe atmospheric blocking pattern or heat dome. By setting a July record for the frequency of 40°C days, this event indicates a shift toward more volatile summer extremes in Japan, increasing the burden on the healthcare system and electrical grids due to air conditioning demand.
