Japanese weather officials have warned that torrential rains will hit Pacific coastal areas of eastern Japan on Tuesday.
The Meteorological Agency says unstable atmospheric conditions and warm, humid air have led to rain clouds forming above the central coastal region of Tokai.
The agency says on Tuesday morning, hourly rainfall of 66 millimeters was recorded in Shizuoka City and 38 millimeters in the city of Shima in Mie Prefecture.
In some parts of Shizuoka Prefecture, more than 200 millimeters of rain fell in 24 hours, prompting officials to issue a landslide warning.
Risk of flooding is also increasing for low-lying areas near rivers in the prefecture.
The agency says Tokai and Kanto Koshin regions will most likely experience hourly rainfall of at least 50 millimeters while more than 30 millimeters of rain will fall across Tohoku and Hokkaido, as the front moves across Japan from west to east.
Up to 180 millimeters of rain will likely fall during the 24 hours leading up to Wednesday morning in some parts of Tokai, Kanto Koshin and Izu Islands.
The Pacific coast in eastern and northern Japan will also experience gusty winds and rough seas, with waves as high as 6 meters.
The Meteorological Agency has warned that there may be landslides, swelling rivers, flooding in low-lying areas, high surf, lightning strikes and tornados.