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Prefectural Weather Information | Saga Prefecture Weather Information on Heavy Rain, Lightning and Gusty Winds
August 11, 2025 11:40 Announcement by the Saga Regional Meteorological Observatory
In Saga Prefecture, please be on high alert for landslide disasters until the evening of the 11th, and be vigilant against flooding of low land, rising water and flooding of rivers. Also, watch out for violent gusts of wind, such as lightning strikes or tornadoes.
　[Weather Overview]
　　Warm and moist air flows towards the front in the northern region of Kyushu, making the atmospheric conditions very unstable.
　　For this reason, in Saga Prefecture, heavy rain accompanied by lightning and very heavy rain will fall locally until the afternoon of 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 rain (03:00 on the 9th) to 11:00 on the 11th (preliminary data from AMeDAS)
　　　Tosu 245.5mm
　　　Saga Airport 201.5mm
　　　Ureshino 181.5mm
　
　[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 12 o'clock on the 11th to 12 o'clock on the 12th is a lot of places.
　　　Southern 150 mm
　　　Northern 150 mm
　
　[High tide time]
　　Oura Port 11th 22:57
　　　　　　12th 10:59 23:27
　
　[Disaster prevention matters]
　　Please be on high alert for landslides, and be vigilant against flooding of low-lying land, rising water and flooding of rivers.
　　Also, 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 16:30 on the 11th.

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