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Rainy season arrives with early intensity

Rainy season arrives with early intensity

NHK11-06-2025
Large parts of Japan are now in the rainy season, and hazards like floods and landslides can develop in a flash. NHK World meteorologist Jonathan Oh tells us what to expect and how to prepare.
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People in western and eastern Japan, as well as other regions, are advised to stay alert to symptoms of heatstroke. Scorching heat continues, with temperatures expected to rise to 35 degrees Celsius or higher. The Meteorological Agency says a high-pressure system is likely to cover western Japan and elsewhere, bringing mostly sunny and hot weather on Sunday. Daytime highs are forecast to reach 37 degrees in the cities of Nagoya, Kyoto and Kofu, 36 degrees in the cities of Hiroshima and Takamatsu, and 35 degrees in central Tokyo and the cities of Okayama and Fukuoka. The mercury is likely to hit 34 degrees in Osaka and Yamagata cities, and 33 degrees in the cities of Toyama and Matsue. Authorities have issued a heatstroke alert for the following prefectures: Tokyo, excluding the Izu and Ogasawara Islands, Chiba, Kanagawa, Yamanashi, Aichi, Mie, Wakayama, Hiroshima, Shimane, Tokushima, Kagawa, Ehime, and all prefectures in Kyushu, excluding Kagoshima Prefecture's Amami region. This is the first alert of the season issued for Tokyo and Kanagawa. People are advised to use air conditioners as needed, take liquids and salt and rest frequently when working outside. Meanwhile, atmospheric conditions are likely to become unstable, especially along mountains in western and eastern Japan, due partly to rising temperatures and damp air. Weather officials say localized downpours with thunder may fall, and are also calling for caution against lightning strikes, gusty winds and hail.

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