The Korea Meteorological Administration announced that as of 9:50 a.m. on the 1st, it will upgrade the heavy rain advisory issued for Boryung in South Chungcheong Province to a heavy rain warning.
A heavy rain warning is issued when rainfall of more than 90 mm is expected within 3 hours or more than 180 mm within 12 hours.
In nearby South Chungcheong Province, Hongseong, Taean, and Yesan are under a heavy rain advisory. The heavy rain advisory is issued when rainfall of 60 mm is expected within 3 hours or more than 110 mm within 12 hours.
As of the morning of that day, the rain that had been pouring down in the capital region, including Seoul and Gyeonggi, is moving toward the Chungcheong area. The Korea Meteorological Administration lifted the heavy rain advisory issued for 15 cities and counties in Seoul and Gyeonggi as of 9 a.m. Target areas included Gwangmyeong, Gwacheon, Bucheon, Yeoncheon, Goyang, Yangju, Uijeongbu, Paju, Seongnam, Anyang, Guri, Namyangju, Gunpo, Uiwang, and Hanam in Gyeonggi. However, the heavy rain advisory remains in effect for Ansan, Siheung, Gimpo, and Hwaseong in the southwestern Gyeonggi region.
The Korea Meteorological Administration noted that "there is a possibility that the heavy rain advisories may be expanded" and urged to "refer to the weather information that will be announced later."