Locally very heavy rain Atsushi west to eastern Japan, air instability August 20, 6:20
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Under the influence of the front, the atmospheric conditions in western Japan and eastern Japan have become unstable, with extremely heavy rains of 50 mm or more locally per hour. It is expected that the unstable atmosphere will continue over a wide range over the 21st, and sufficient attention should be paid to inundation of low land and sediment disasters.
According to the Japan Meteorological Agency, due to the influence of warm and humid air flowing from the western Japan to the eastern Japan, the atmospheric conditions become unstable in the western and eastern Japan. .
In the 1 hour period until 5 am, Kumamoto Prefecture observed a very heavy rain of 50 mm with a rain gauge installed in Amakusa City.
Air instability is expected to continue over 21 days in a wide range of western and eastern Japan, and there may be a very heavy rain of 50 mm or more per hour with local lightning.
The amount of rain that falls in the 24 hours until the morning of the 21st is high,
▽ 120 mm in northern Kyushu,
▽ 100 mm in southern Kyushu, Tokai, Hokuriku,
▽ 80mm in Kinki and Chugoku region,
▽ It is expected to be 60 mm in Kanto Koshin and Shikoku.
The Japan Meteorological Agency calls for careful attention to low land inundation, landslide disasters, river flooding, lightning strikes, and tornadoes.
When there is a sign that the developed cumulonimbus is approaching, such as a sudden cold wind, move it into the building to ensure safety.