Warm and moist air is flowing in toward the low-pressure system and front, and rain clouds are covering a wide area from eastern Japan to northern Japan, and winds are strengthening mainly in coastal areas. The extremely unstable state of the atmosphere is expected to continue until the afternoon of the 7th, and the Japan Meteorological Agency is calling for caution against storms, high waves, and landslides.
According to the Japan Meteorological Agency, a low-pressure system accompanied by a front is moving eastward over the Sea of Japan, and warm and moist air is flowing in from the south, causing rain clouds over a wide area from eastern Japan to northern Japan, and locally heavy rain is falling.
In the one hour until 5 a.m., 1 mm of heavy rain fell in Hakone Town, Kanagawa Prefecture.
The wind was also increasing mainly in the coastal areas, and the maximum instantaneous wind speed of 27.3 meters was observed just after 27 a.m. in Tobishima in Sakata City, Yamagata Prefecture, and 4.5 meters in Matsue City before 26 a.m.
The extremely unstable state of the atmosphere will continue until the afternoon of the 8th, and there is a risk of very heavy rain accompanied by localized lightning in eastern Japan and northern Japan.
In addition, on the 7th, the wind will be strong nationwide, and very strong winds will blow in Hokkaido, Tohoku, and Hokuriku, and the sea is expected to be a large barge.
The Japan Meteorological Agency (JMA) warns of storms and high waves, as well as landslides and flooding of low-lying land, and warns of severe wind gusts such as lightning strikes and tornadoes.
If there are signs of approaching cumulonimbus clouds, such as the sound of thunder or cold winds, try to stay safe by moving inside a sturdy building.