Heavy rain warning in Kanto Koshin and Tohoku tonight Be careful of intense heat and sudden heavy rain after tomorrow 20th
August 19, 2023 at 18:13
The atmospheric conditions are very unstable tonight, mainly in the Kanto-Koshin and Tohoku regions. In Iwate Prefecture, there are places where “Sediment disaster warning information” has been issued, and the danger of disasters is increasing. It is necessary to pay attention to the intense heat and sudden heavy rain for a while after tomorrow 20th.
“Sediment disaster warning information” in Iwate Prefecture Kanto Koshin may also spread to areas with warning level heavy rain
The atmospheric conditions in the Kanto-Koshin and Tohoku regions are extremely unstable, and localized extremely heavy rainfall of 50 mm or more per hour is falling.
Hourly rainfall was 75.0 mm in Tono City, Iwate Prefecture (until 17:50) and 61.5 mm in Hotaka, Azumino City, Nagano Prefecture (until 17:30).
In Iwate Prefecture, Morioka City and Miyako City have issued landslide warning information equivalent to alert level 4 (as of 17:30). The warning area has been expanding in the last few hours, so please try to evacuate early even in areas where landslide warning information has not yet been issued.
Kanto Koshin and Tohoku fear of localized heavy rain tonight
Rain clouds are likely to develop in Kanto-Koshin and Tohoku through tonight, and there is a risk of localized heavy rain. There is a risk of landslides along the mountains, and roads in urban areas may be flooded at once. The river may rise temporarily.
Also, watch out for lightning near developed cumulonimbus clouds. Many lightning strikes have already been observed in Kanto-Koshin and Tohoku. Lightning strikes and gusts of wind can snap trees and utility poles and cause power outages, so be careful.
Atmospheric instability continues tomorrow 20th
On the 20th, the atmosphere is expected to continue to be unstable in various places due to the effects of humid air and rising temperatures.
It will be sunny in many places during the day, and it is likely to become extremely hot. The maximum temperature will be 37 degrees Celsius in central Tokyo and Nagoya, and 36 degrees Celsius in Osaka and Hiroshima. Heatstroke warning alerts have also been announced in 35 prefectures, more than today.
Due to this heat, the atmospheric conditions will become unstable in the afternoon, and cumulonimbus clouds will form here and there, mainly along the mountains and inland areas from Hokkaido to Kyushu. There is a possibility that the unstable area will spread more than today. Please be careful of sudden heavy rain, lightning strikes, gusts of wind, hail, etc.
Extreme heat will continue next week Rain will intensify on the Pacific side in the middle of the week
The day after the day after the 21st, the summer high pressure that brings heat is likely to continue, especially in northern and eastern Japan. The forecast maximum temperature is significantly higher than normal in Sapporo and Sendai, and Niigata is likely to experience extremely hot days from the middle of the week onwards. It will continue to be around 35 degrees Celsius in central Tokyo.
While the heat will continue, the weather will be changeable. In particular, the Pacific Ocean side of the Kanto region to the west is likely to be affected by humid air from the middle of next week, and there may be days when the rain intensifies. In Shikoku and Kyushu, the rain may last longer. The feature is that it rains easily not only in the mountains and inland but also in the coastal areas.
The area and timing of rain can change significantly, so be sure to check the weather forecast and rain clouds frequently.
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2023-08-19 09:13:53
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