A typhoon slowly moved northward off the Pacific coast of Japan on Thursday, with the weather agency warning of heavy rain and high waves in the eastern and northeastern regions.

But the agency said Typhoon Shanshan was no longer a "strong" typhoon as its wind speed had slowed. It is expected to slightly lose strength as it gradually shifts course eastward, according to the Japan Meteorological Agency.

On Wednesday, the weather agency had warned of possible mudslides and flooding, prompting some municipalities to call on residents to evacuate. But no major damage was reported and there was no widespread traffic disruption in Tokyo.

The weather agency forecast gusty winds in northeastern coastal areas through Thursday night and stormy conditions in adjacent waters through Friday.

As of 1 p.m., the typhoon was about 40 kilometers off Iwaki in Fukushima Prefecture, northeast of Tokyo, traveling north at a speed of 20 kilometers per hour with an atmospheric pressure of 980 hectopascals at its center. It was packing gusts of up to 162 kph, according to the weather agency.

(Iwaki, Fukushima Prefecture)

Airlines canceled some flights to and from Narita, Sendai and other airports, while the typhoon also affected railway service.

Four people were injured Wednesday, including an 82-year-old woman who fell due to strong wind and broke her leg in Hitachinaka, Ibaraki Prefecture.

Since Wednesday, 157 millimeters of rain had been recorded in the city of Chichibu in Saitama near Tokyo, 147 mm in the city of Fukushima and 145 mm in the city of Kitaibaraki, northeast of Tokyo.

Winds of up to 162 kph are expected in the east and northeast, with rainfall of 120 mm in the northeast in the 24-hour period through noon Friday.