Atmospheric instability Severe thunderstorms in western and eastern Japan August 21 11:40
Due to the stagnant front, the atmospheric conditions are unstable over a wide area. There is a risk of heavy rain with lightning locally in West Japan on the 21st late night in West Japan and 22nd in East Japan. Sufficient attention should be paid to landslide disasters and low land inundation.
According to the Japan Meteorological Agency, warm and humid air is flowing from the Sea of Japan side of West Japan to the eastern Japan, so the atmosphere is unstable over a wide area.
The front line is stagnant on the 22nd, so there is a risk of heavy rain with lightning locally in the western Japan late at night on the 21st and in the eastern Japan on the 22nd.
The amount of rain that falls in the 24-hour period until the morning of the 22nd is expected to be 80 mm in Hokuriku and Kanto Koshin.
The Japan Meteorological Agency has called for careful attention to landslide disasters, low land inundation, river flooding, and lightning and tornado gusts.
The weather may change suddenly even in sunny areas.
When there is a sign that the developed cumulonimbus is approaching, such as sudden cold winds, move to the building to ensure safety.