Weather officials say severe tropical storm Krosa is approaching western Japan and could make landfall by Thursday.
The Meteorological Agency is warning people on the Pacific coast of Japan to brace for strong winds, high waves and heavy rain.
The agency expects winds of up to nearly 110 kilometers per hour, with gusts reaching about 160 kilometers per hour in the southern part of the Kyushu region through Wednesday. The officials also expect waves of up to 10 meters off the Shikoku region.
The officials say the rain will intensify from Wednesday. They say downpours may continue even after the storm moves off, and that some areas could see 1,000 millimeters of precipitation.
Many people in Japan are now out vacationing during the Bon summer holiday period.
Officials are warning the holidaymakers to check the latest updates and to watch for stormy weather which may bring floods and landslides.