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Warning Level Heavy Rain in Japan: Increased Risk of Landslide Disasters






8th to 9th days before active line warning level heavy rain in western and eastern Japan Increased risk of landslide disaster even with little rain

June 07, 2023 18:24

From tomorrow 8th to 9th, there is a risk of warning level heavy rain from western Japan to eastern Japan. Even in places where there was record heavy rain the other day, there are places where it rains very heavily or torrentially again. Even with a small amount of rain, the risk of landslide disasters increases sharply, which may lead to the occurrence of new disasters. Stay away from dangerous areas.


Tomorrow 8th to 9th Kyushu-Kanto Koshin fear of “warning heavy rain”


Tomorrow, the 8th, the rainy season front extending south of Japan is expected to gradually move northward from the west.
On the night of the 8th, a low pressure system will form near Shikoku on the front line, and it will reach eastern Japan on the morning of the 9th.
As warm and moist air from the tropics flows toward the front, activity on the front is expected to increase again.

From tomorrow 8th to 9th, there is a risk of “warning heavy rain” from western Japan to eastern Japan.

In Kyushu, from around noon on the 8th to the 9th, there will be places where it will rain so hard that the roads will be flooded all at once.
Shikoku, Kinki, Tokai, and Kanto-Koshin are also expected to experience local heavy rain with thunder and very heavy rain from the night of the 8th to the 9th.

The other day, from the 2nd to the 3rd, there was a series of “linear rain belts” in various places, and it was just a record heavy rain. .

Even a little rain can dramatically increase the risk of landslides, and new disasters may occur, so please be extremely vigilant.



Expected rainfall Even with a small amount of rainfall, the risk of disasters may rise sharply


Expected rainfall for 24 hours until 6:00 p.m. on the 8th (heavy areas)
Southern Kyushu 180mm
Northern Kyushu 120mm

Expected rainfall for 24 hours until 6:00 p.m. on the 9th (heaviest)
Southern Kyushu, Shikoku region, Kinki region, Tokai region, Kanto Koshin region 100 to 200 mm
Northern Kyushu 50 to 100 mm

Not long after the heavy rain the other day, another heavy rain is expected. It seems that there will be many places where the rain will intensify during the dark hours.
Regarding the risk of landslides, floods, and floods, please check the latest information on the “Kikikuru on the Japan Meteorological Agency website” (distribution of risk), etc., and ensure your safety.



Kanto-Koshin also enters the rainy season.


In the Kanto-Koshin region, it will start raining late at night on the 8th, and the next day, mainly in the morning of the 9th, there will be heavy rain accompanied by thunder.
In the Kanto-Koshin region, there is a risk of heavy rain again. I think there are people who are still working on restoration after the last heavy rain, but there is a risk that the risk of disasters will rise again, so please check the rain information and plan accordingly. .

In the Kanto-Koshin region, where the start of the rainy season has not yet been announced, the rainy season is expected to begin on the 9th the day after tomorrow. please.

Also, depending on the future course of Typhoon No. 3, the weather at the beginning of the week is likely to change significantly.

*In the weekly weather chart, typhoons are also expressed as “low”.



Typhoon No. 3 moves south of Japan northward with “strong” force Pay attention to trends


Typhoon No. 3 is expected to gradually gain strength and become a “strong” force east of the Philippines on the 9th.
It will move north south of Japan, maintaining a “strong” force, with a storm zone.

The forecast circle around the 12th is large, and there is a wide range in the course and speed. In addition, the seasonal rain front is expected to remain stationary near Honshu in the future.
For this reason, as with Typhoon No. 2, there is a risk that the seasonal rain front will become active before the typhoon moves northward, bringing heavy rains from western Japan to eastern Japan.

There are two periods of heavy rain.
The first time will be from tomorrow 8th to 9th, and the second time will be from 12th to 13th at the beginning of the week. Please pay attention to the information and prepare for heavy rain early.


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2023-06-07 09:24:55
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