Typhoon Krovanh was moving west-northwestward Sunday in the Pacific Ocean and was expected to approach parts of the Kanto region Monday, weather forecasters said.
The typhoon, named after a Cambodian tree, was nearly 160 km south-southeast of Hachijo Island, about 300 km south of Tokyo, at 9 p.m. Sunday with a maximum wind velocity of 144 kph, the Meteorological Agency said.
Waves of 6 to 7 meters were expected Monday near the Izu chain of islands as well as off the Pacific coasts of eastern and northeastern Japan, where winds gradually strengthened from midday, the agency said.
Parts of eastern Japan saw rainfall pick up Sunday evening, it said.
By Monday evening, 300 mm of rain was expected in many parts of Kanto.