As per reports, 142.1 mm rainfall was recorded in Muan on Monday (04 August). It accounted for nearly 11 percent of the annual average rainfall in the country. The rainfall is expected to continue through Tuesday (05 August) morning, with precipitation reaching 100 to 200 mm and up to 250 mm in Gwangju and South Jeolla Province, excluding the southern coastal areas.

30 to 80 mm of rainfall per hour is forecast to fall in most parts of the country through Monday (04 August) morning. The interior ministry has activated level one operation of the Central Disaster and Safety Countermeasures Headquarters for the western Jeolla and Chungcheong provinces.

• The agricultural ministry has activated a 24-hour emergency response system through Tuesday (05 August) in coordination with local governments and relevant agencies. On-site response efforts have been strengthened in flood- and landslide-prone areas.
• South Gyeongsang Province raised its emergency response posture to level one as a preliminary heavy rain advisory was issued for parts of its region. Heavy rainfall is expected to impact southern coastal areas and around Mount Jiri.
• North Jeolla Province also activated a level one emergency response system after a preliminary heavy rainfall advisory was issued for 10 cities and counties in the province.
• Additionally, moisture brought into the Korean Peninsula due to the lingering impact of Typhoon Co-may has reduced to a tropical depression. It is expected to bring extreme rainfall across the country, with a particular focus in the Greater Seoul region, which includes Incheon and Gyeonggi Province, as well as North and South Chungcheong provinces, North and South Jeolla provinces and the southern coast along South Gyeongsang Province.
• Meanwhile, dry air is expected to continue descending on the Korean Peninsula from the north. As the dry air collides with the incoming hot and humid air from the south, it will trigger unstable atmospheric conditions, causing heavy rainfall.
• Heavily impacted regions may witness rainfall upto 50-80mm per hours in Greater Seoul, North and South Chungcheong provinces as well as North and South Jeolla provinces. Through Monday (04 August), cumulative rainfall could total up to 150 mm in such regions, while coastal areas near South Gyeongsang Province and South Jeolla Province could see cumulative rainfall ranging between 180 and 200 mm, respectively.
• From Wednesday (06 August) afternoon, the rain clouds are forecast to expand into North and South Jeolla provinces as well as North and South Gyeongsang provinces.
• The Ministry of Interior and Safety designated several regions impacted by heavy rains two weeks ago — including Gyeonggi Province, the North and South Chungcheong provinces and South Gyeongsang Province — as priority zones for preemptive control. They will be blocked off in advance and evacuation plans are being prepared to prevent further harm.