Heavy rain continues to affect South Chungcheong and South Jeolla. On August 31, the Korea Meteorological Administration issued a preliminary heavy rain watch for central regions, including South Chungcheong, and advised that intense rain was expected from the early hours of August 31 in parts of South Chungcheong and elsewhere. The forecast notification also indicated that rain could continue in parts of central Korea through the morning of September 1. ([Korea Meteorological Administration weather warnings](https://www.weather.go.kr/w/wnuri-fct2021/weather/warning.do), checked at 16:20 UTC on August 31, 2026)
Key developments
In South Chungcheong, the risk of rising river levels was confirmed alongside the forecast for intense rain. According to YTN, the Geum River Flood Control Office issued a flood advisory as water levels rose at Guman Bridge on the Sapgyocheon River in Yesan, South Chungcheong. The advisory threshold cited in the report was 5.8 m. ([YTN report on the Guman Bridge flood advisory](https://www.ytn.co.kr/_ln/0115_202608312156312944), checked at 16:20 UTC on August 31, 2026)
In South Jeolla, reports described heavy accumulated rainfall as well as flooding and isolation. However, rainfall totals vary depending on the observation point and aggregation period, so the period must be checked when comparing figures.
Even rainfall totals for the same area can have different meanings when the observation periods differ.
Current status
The confirmed rainfall totals are as follows.
| Region/station | Observation period | Rainfall |
|---|---|---|
| Nakwoldo, Yeonggwang County, South Jeolla | August 31, 00:00–12:00 | 552 mm |
| Nakwoldo, Yeonggwang County, South Jeolla | Through 08:00 on August 31 | 539.0 mm |
| Boseong, South Jeolla | Through 08:00 on August 31 | 177.0 mm |
| Yeonmu, Nonsan, South Chungcheong | Through 08:00 on August 31 | 115.0 mm |
Yonhap News reported that Nakwoldo in Yeonggwang County, South Jeolla, received 539.0 mm of rain by 08:00 on August 31, while Boseong in South Jeolla received 177.0 mm and Yeonmu in Nonsan, South Chungcheong, received 115.0 mm. YTN later reported that Nakwoldo received 552 mm from 00:00 to 12:00 on August 31. ([Yonhap rainfall report](https://www.yna.co.kr/amp/view/AKR20260831029300530), checked at 16:20 UTC on August 31, 2026; [YTN report on torrential rain in South Jeolla](https://www.ytn.co.kr/_ln/0115_202608312206351279), checked at 16:20 UTC on August 31, 2026)
Impact
Reports from South Jeolla described river overflows, flooding of farmland, roads, and homes, as well as residents and hikers becoming isolated and being evacuated. The scale of the damage may increase as additional figures are compiled, so the final extent cannot yet be determined beyond the currently reported scope. ([YTN report on heavy rain damage in South Jeolla](https://www.ytn.co.kr/_ln/0115_202608312206351279), checked at 16:20 UTC on August 31, 2026)
During heavy rain, avoid areas that frequently flood and locations at risk of landslides. Do not approach flood-prone areas such as riversides and coastal areas, and continue checking weather conditions even indoors. ([National Disaster and Safety Portal heavy rain safety guidelines](https://safekorea.go.kr/idsiSFK/neo/main_m/nat/downpour.html?menuTab=1), checked at 16:20 UTC on August 31, 2026)
Next check
According to the Korea Meteorological Administration, rain may continue in parts of central Korea through the morning of September 1. Before traveling, check the KMA warnings and local disaster alerts again, and avoid traveling to flood-prone areas such as riversides and coastal areas. Weather warnings and river levels can change in real time, so official announcements should be checked again immediately before publication.