Not only in western Japan, where typhoon No. 4 is approaching, but also in eastern Japan and northern Japan, which are far away, the atmospheric conditions became unstable, rain clouds developed locally, and extremely heavy rains and heavy rains fell. I have.

"Wind from typhoon" and "Air around the edge of the Pacific High"

According to the Japan Meteorological Agency, the reasons for the heavy rainfall in areas away from typhoons are "wet winds from typhoons" and "warm and moist air around the edges of the Pacific High."



Around Typhoon No. 4, a southerly wind is blowing counterclockwise.



On the other hand, the Pacific High, which caused the nationwide heat wave last week, has weakened and descended to the south, and warm and moist air is flowing clockwise around the edge of the high pressure into the Japanese archipelago.



In addition to these two large air currents, cold air also moves southward from western Japan to northern Japan, making atmospheric conditions unstable and making it easier for rain clouds to develop in various places.

Speed ​​comparable to a bicycle May increase the risk of disaster

In this typhoon No. 4, it is necessary to be cautious about disasters caused by "long-lasting rain".



The Japan Meteorological Agency predicts that heavy rains will continue


on the 6th in western


Japan and on the 7th in eastern Japan


.



Typhoon No. 4 is expected to be swept away by the wind around the Pacific High and proceed toward the east, but due to the weak wind, it is characterized by a relatively slow movement of about 20 km, which is comparable to that of a bicycle.



The slower the movement speed, the longer it will be affected by rain and wind, and the total rainfall may increase, especially on the Pacific side of western and eastern Japan.



The Japan Meteorological Agency has confirmed the latest typhoon information and kickle (risk distribution), etc., saying that if the rain clouds of the typhoon itself hit the place where it is already heavy rain, the risk of disaster may increase, and it is safe as soon as possible. We are calling to secure.