Typhoon Halong is heading north in the Sea of Japan on Monday morning after it traveled northward over western Japan, bringing heavy rain and strong winds to Hokkaido and the Tohoku region.

Heavy rain will continue into the early afternoon in Hokkaido and the Tohoku region. Rough seas will continue until noon off Tohoku, while waters off Hokkaido will remain turbulent until late Monday night, the Meteorological Agency said.

Due to the heavy rain so far, the risk of landslides is rising in some parts across western to northern Japan, the agency said. It called for alert against landslides and floods, especially in low-lying areas.

The agency also called for caution against lightning and tornados, recommending that people remain indoors if signs such as thunderclouds are sighted.

As of 3 a.m. Monday, the typhoon was over the sea west-southwest of Okushiri Island, traveling northward at 45 kph, packing a maximum wind velocity of 108 kph. The atmospheric pressure at its center measured 975 hectopascals. The storm is raging within 110 km of the typhoon's eye, with a wind velocity reachinig over 90 kph, according to the agency.

The agency expects Halong will continue on its northward course until it turns into an extratropical cyclone by the end of the day.