Weather officials are again urging people in northeastern Japan to remain on alert as the region continues to be inundated with record rainfall.

The meteorological agency says Akita Prefecture and other parts of the Tohoku region along the Sea of Japan coast were deluged with rain on Saturday.

A record amount of more than 320 millimeters fell at Mount Taihei in Akita Prefecture.

The towns of Fujisato and Happo saw over 200 millimeters of rain during a 24-hour period through Sunday morning. That's more than the average for the entire month of July.

Akita, Iwate and Yamagata prefectures are under a landslide alert.

Officials in Akita say several rivers including the Taihei River have breached their banks. They have issued the highest alert level for flooding. Some areas are under evacuation orders.

The meteorological office forecasts more rain for the Tohoku region through Sunday, and is warning of flooding in low-lying areas, along with overflowing rivers and landslides.

In South Korea, several days of heavy rain, flooding and landslides have left at least 26 people dead and 10 missing. Much of the country has been drenched since Thursday.

The affected regions stretch from South Chungcheong Province in the west, to North Gyeongsang Province in the east. Weather officials are warning of continued heavy rainfall.