Typhoon Omais made landfall in South Korea on August 23, 2021. Heavy rain flooded roads, train tracks and homes, and created a risk of landslides, leading to the evacuation of people, but no injuries or casualties were reported.
In the city of Jeoje, located in South Gyeongsang province, 98.0 mm of precipitation fell in 1 hour on August 24, 2021, in Imsil in North Jeolla province - 84.0 mm, and in the port city of Busan - 78.0 mm. Total rainfall during the storm was over 230mm at Geoj.
South Korea's Central Disaster Management and Security Headquarters reported flooding of more than 120 roads in Busan, Ulsan and Daegu cities, as well as North Jeolla, North Gyeongsang and South Gyeongsang provinces. Rail links were temporarily suspended after the flooding of tracks in South Gyeongsang Province. About 150 buildings were hit by the hurricane, including 85 in Ulsan.
According to the Yonhap news agency, 33 people have been displaced from their homes by floods in Ulsan and Tongyeong in South Gyeongsang province. 1,157 people were evacuated due to fears of landslides and flash floods in eastern Busan, Changwon and South Jeolla province.