Tropical Storm Yun-yeung is moving north-northeast over the Pacific Ocean south of Japan. It is forecast to come close to central and eastern Japan on Friday afternoon and may make landfall.

The Japan Meteorological Agency says Yun-yeung was moving north-northeast at about 25 kilometers per hour as of 3 p.m. on Thursday.

Yun-yeung is expected to continue on a northerly path. It is likely to come close to the Tokai region in central Japan and the Kanto region in eastern Japan on Friday afternoon, and may make landfall later in the day.

Torrential rain accompanied by thunder can be expected in those regions on Friday morning, and may continue through Saturday.

A band of well-developed rain clouds may form over the Izu Islands in the Pacific south of Tokyo from late Thursday through Friday morning, bringing extremely heavy rainfall that could raise the risk of disasters.

In the 24 hours through late Friday afternoon, the Tokai region can expect up to 300 millimeters of rain, and the Kanto and nearby Koshin regions can expect up to 250 millimeters. Precipitation is likely to further increase in some areas, if bands of heavy rain clouds develop.

In the 24 hours through late Saturday afternoon, the Tohokou region in northern Japan can expect up to 150 millimeters of rain, while the Kanto-Koshin region can expect up to 100 millimeters.

The typhoon is also expected to bring strong winds and raging waves.

The Meteorological Agency is asking people to stay on the alert for landslides, flooding in low-lying areas, swollen rivers, as well as strong gusts, storm surges, lightning strikes, and tornadoes.