Atmospheric instability in west to eastern Japan Even with severe thunderstorms, pay sufficient attention to inundation, etc. August 21, 4:35
Under the influence of the stagnant front, the atmospheric conditions have become unstable, mainly in western Japan and eastern Japan. There is a risk of heavy rain with lightning locally over the 22nd, and sufficient caution is required for landslide disasters and inundation of low land.
According to the Japan Meteorological Agency, warm and humid air is flowing from the west to the eastern Japan, so the atmospheric conditions are unstable over a wide area. Since the front line will remain stagnant after this, the unstable atmosphere is expected to continue over the 22nd, and there is a risk of heavy rain with lightning locally, mainly in western Japan and eastern Japan.
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.
If there is a sign that the developed cumulonimbus is approaching, such as a sudden cold wind, try to ensure safety by moving into the building.