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Prefectural Weather Information | Saga Prefecture Weather Information on Heavy Rain, Lightning and Gusty Winds
2025 August 10, 23:59 Saga Regional Meteorological Observatory announced
In Saga Prefecture, please be on high alert for landslide disasters, flooding of low land, and rising water and flooding of rivers until dawn on the 11th. Continuing, there is a possibility that a linear precipitation band will occur on the morning of the 11th, and the risk of heavy rain disasters will increase sharply.
　[Weather Overview]
　　Warm and moist air flows towards the front in the Tsushima Strait, making the atmospheric conditions very unstable. The front is expected to stagnate in the Tsushima Strait until the 12th.
　　For this reason, in Saga Prefecture, heavy rain accompanied by lightning and very heavy rain will fall locally until noon on the 11th, and there is a risk of heavy rain. There are places where the ground is loose and the water level is rising due to the heavy rain so far, and even a little rain may cause landslides and river flooding. There is also a risk of severe gusts of wind such as lightning strikes and tornadoes.
　
　[Rain commentary]
　Precipitation from the beginning of the rain (03:00 on the 9th) to 23:00 on the 10th (preliminary data by AMeDAS)
　　　Tosu 162.0mm
　　　Ureshino 137.5mm
　　　Saga City Kitayama 136.0mm
　
　[Rain forecast]
　The expected 1-hour precipitation on the 11th is a lot of places.
　　　Southern 50 mm
　　　Northern 50mm
　The 24-hour precipitation expected from 0:00 on the 11th to 0:00 on the 12th is in places with a lot of rainfall.
　　　Southern 200 mm
　　　North 200 mm
　After that, the 24-hour precipitation expected from 0:00 on the 12th to 0:00 on the 13th is in a lot of places.
　　　Southern 100 mm
　　　Northern 100 mm
　If a linear precipitation band occurs, there is a risk of further increase in rainfall locally.
　
　[High tide time]
　　Oura Port 11th 10:19 22:57
　
　[Disaster prevention matters]
　　Please be on high alert for landslides, flooding of low-lying land, and rising and overflowing rivers.
　　Watch out for violent gusts of wind, such as lightning strikes or tornadoes.
　　If there are signs that a developed cumulonimbus cloud is approaching, please try to ensure safety, such as moving into the building.
　
　[Supplementary Notes]
　　Please pay attention to future warnings, advisories, weather information, etc.
　　For information on the risk distribution of landslides, flood damage, and flood disasters, please check the "Japan Meteorological Agency website".
　
　　The following information is scheduled to be announced around 6 o'clock on the 11th.

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