Typhoon Nabi has caused nine deaths and left about 90 people injured, as it blows north through Japan, leaving floods and landslides behind it.
Now weakening and downgraded to a tropical storm, it is still expected to bring severe rain to the northern island of Hokkaido on Thursday.
At its worst Nabi brought winds of 126km/h (78mph), and up to 1.3m (51in) of rain on Kyushu Island.
Nabi also brought flooding to southern and eastern parts of South Korea.
One person was missing after being swept away near Ulsan, 410km (255 miles) southeast of Seoul, reports BBC.
According to Reuters, Floodwaters in many areas were drawing back by Wednesday morning, officials said.
"Although there are some low-lying areas that are still flooded, a lot of the water has gone down already," said an official in Kyushu's Miyazaki prefecture, some of whose towns were particularly hard-hit.
Nearly 300 people spent the night on a train in the western Japan city of Osaka after being stranded when the storm halted rail services, Kyodo news agency said. Flights were disrupted on Wednesday, with more than 100 cancelled, NHK said, but train services had resumed after being halted on Tuesday.
Japan's Meteorological Agency forecast that Nabi, whose name means "butterfly" in Korean, would travel northeast over the Sea of Japan, skimming Japan's west coast and hitting the northernmost main island of Hokkaido on Thursday.