Japanese weather officials say severe tropical storm Tapah will likely approach the country's southwestern island of Kyushu on Sunday.
The Meteorological Agency estimates that as of 4 p.m. on Sunday, Tapah was over waters about 70 kilometers west-southwest of Goto city, Nagasaki Prefecture. The storm was moving north-northeast at 30 kilometers per hour.
The agency says the storm is generating sustained winds of 108 kilometers per hour and gusts of 135 kilometers per hour.
Tapah is expected to approach the northern Kyushu and Chugoku regions before heading to the Sea of Japan.
The storm is likely to approach northern Japan from Monday onward.
Some parts of Kyushu and Shikoku have already received nearly 400 millimeters. Weather officials issued a mudslide alert for some areas in Miyazaki, Kumamoto, Oita and Tokushima prefectures.
On Sunday, Tapah will likely hit Kyushu and other areas of western Japan with powerful winds. It will also make seas rough around western and northern Japan.
Tapah is also forecast to dump heavy rain. Total rainfall for the 24 hours through Monday morning could reach 400 millimeters in Shikoku and 300 millimeters in Kyushu.
Tapah could even bring stormy conditions to areas away from its path.
Weather officials are warning of violent winds, high waves, mudslides, swollen rivers, and flooding.