Due to the moist air flowing towards the front and low pressure and the cold air in the sky, the atmospheric condition is expected to be very unstable from early afternoon of September 9 to October 30 over a wide area from west Japan to north Japan, and the Japan Meteorological Agency has warned people to be careful of severe gusts such as lightning strikes and tornadoes, as well as sudden heavy rain.
According to the Japan Meteorological Agency, warm and moist air is flowing in from the south, so it rains in Hokuriku, southern Tohoku, and Kanto.
After this, a low pressure system with a front formed in the south of Japan and the Japan Sea will pass near Honshu, and the atmospheric conditions will become very unstable over a wide area of the western Japan, east, and northern Japan Japan from early afternoon of September 9 to October 30, due to cold air flowing into the sky.
The Japan Meteorological Agency warns people to be careful of severe gusts of wind such as lightning strikes and tornadoes, sudden heavy rain, and hail.
Even if it is sunny, if the weather is likely to change suddenly, and there are signs of approaching cumulonimbus clouds, such as a sudden darkening of the sky or a cold wind, move to a sturdy building to ensure safety.