The Korea Meteorological Administration has forecast extreme rainfall of up to 300mm [1] for central South Korea, including the Seoul metropolitan area and Gangwon Province.
These forecasts signal a high risk of landslides and urban flooding in densely populated regions. The timing of the storm coincides with the weekend, which could complicate emergency response and travel for millions of residents.
According to the agency, the heavy rain is expected to begin around midnight tonight and continue through Sunday [1]. The precipitation is being driven by a stationary front meeting a low-pressure system.
Officials warned that the intensity of the storm could be severe. A Korea Meteorological Administration spokesperson said that hourly rainfall peaks could reach 80mm [1]. This level of precipitation often leads to rapid water accumulation in low-lying areas, and unstable soil on mountain slopes.
While some areas of northern Chungcheong are also expected to be affected, the primary focus remains on the capital region and the east coast. A YTN anchor said that while the monsoon rains had paused briefly, tomorrow will be the critical period for the region.
Local authorities are urging citizens to prepare for potential flooding and to monitor landslide warnings. The combination of high volume and high intensity makes the current weather system particularly dangerous for infrastructure and public safety.
“Hourly rainfall peaks could reach 80mm”
The convergence of a stationary front and a low-pressure system creates a volatile weather pattern capable of delivering a month's worth of rain in a matter of days. In the Seoul metropolitan area, where urban drainage systems can be overwhelmed by hourly peaks of 80mm, this forecast suggests a high probability of flash floods and significant transport disruptions.
