Japan’s Meteorological Agency says that on September 19, Japan time, the storm was hovering over water 110 kilometers (68 miles) west-northwest of Minami Daito Island, Okinawa Prefecture.

Roke is expected to continue to move northward slowly, it might hit Japan’s main island of Honshu on September 20, or later.

Some of the rain forecasts for Monday/Tuesday calls for up to 200 millimeters (7.87 inches) in southern Kyushu, 150 mm (5.9 inches) in northern Kyushu and some parts of western Japan, and 120 mm (4.7 inches) in Okinawa, Amami islands and Kinki region.