2023-07-12 13:19:25
A “linear rain belt” occurs in Toyama Prefecture, and the danger of disasters is rapidly increasing (Weather forecaster Nichinao July 12, 2023)-Japan Weather Association tenki.jp
Even in Toyama Prefecture, a “linear rain belt” occurs.
July 12, 2023 at 22:19
On the 12th, very heavy rain continues in the Hokuriku region. Following Ishikawa Prefecture, Toyama Prefecture also has a linear rain belt. Please continue to be vigilant against landslides and river flooding.
A “linear rain belt” is also occurring in Toyama Prefecture
On the 12th, following Ishikawa Prefecture, Toyama Prefecture also announced “Information on significant heavy rain”. Due to the influence of the seasonal rain front and moist air, very heavy rains continue to fall in the same places in Ishikawa and Toyama prefectures due to linear precipitation belts. The risk of disasters caused by life-threatening landslides and floods is increasing rapidly.
In the Hokuriku region, active rain clouds will continue until the 13th, and the amount of rain will increase further. Please be vigilant against landslides and river flooding.
Actions to be taken when a linear rain band occurs
If a linear rain belt occurs, the risk of disasters due to landslides and floods is already increasing rapidly.
Check the information on evacuation from the local government and try to ensure safety early. If it is already dangerous to evacuate, seek shelter in your home as high up as possible, away from cliffs and rivers. (However, in places where a debris flow is expected, it is basic to evacuate outside the dangerous area or evacuate to the upper floors of a robust building.)
What is a linear rain belt?
A linear rainfall zone is an area of heavy rain that is created when well-developed rain clouds occur in a linear fashion and pass and stagnate in almost the same place for several hours. There is a risk of serious disasters occurring due to continuous heavy rainfall in similar areas.
A representative mechanism of the formation of linear rain zones is the “back building phenomenon”. Rain clouds formed one after another on the windward side develop, ride the wind, and flow into the same place, forming a linear heavy rain area.
*There are many unknown points in the generation mechanism, and not all linear precipitation zones have the same mechanism.
Since it is difficult to accurately predict when and where a linear rain band will occur, it is necessary to be prepared and ready to evacuate at any time when a linear rain band occurs. Check the hazard map in advance to see which rivers are at risk of flooding and where there is a risk of landslide disasters. It is useful when deciding evacuation sites and evacuation routes.
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