Tropical Storm Danas is moving north over the East China Sea. It could bring high waves and storm surges to Japan's Okinawa Prefecture in the next few days.
The Japan Meteorological Agency said that as of 3 p.m. on Thursday, the large storm was moving north at 25 kilometers per hour, with a maximum sustained wind speed of 72 kilometers per hour.
The storm is forecast to bring fierce winds and waves up to 7 meters high to coastal areas of Okinawa on Thursday and Friday as it keeps moving north.
The storm is also activating a seasonal rain front hanging over parts of Japan, bringing heavy rain to western and central areas of the country.
During the hour through 5 p.m., Saiki City in Ohita Prefecture recorded 58 millimeters of rain, and Tanabe City in Wakayama Prefecture recorded 57 millimeters.
The approach of the storm and the rain front are expected to create unstable atmospheric conditions in eastern and western Japan through Saturday, bringing localized torrential rain.
The agency is advising residents to stay alert for heightened dangers of landslides, flooding, lightning and tornados.