The Korea Meteorological Administration issued a preliminary heavy-rain warning for several inland regions of South Korea on Saturday [1].
This alert follows a period of extreme precipitation the previous night. The agency warned that rain clouds have shifted east, creating a high risk of renewed flooding and hazardous conditions across the central and southern regions.
The warning, issued at 4 p.m., targets specific areas with varying levels of expected rainfall. Daegu and North Gyeongsang Province could see maximum rainfall of 150 mm [1]. Meanwhile, Daejeon, North Chungcheong Province, and inland Gangwon Province are forecasted to receive up to 120 mm [1].
Meteorologists expect the heaviest precipitation to occur from tonight through the early morning hours [2]. In some parts of North Gyeongsang Province, hourly rainfall has already exceeded 30 mm [2]. The forecast for the coming night indicates that central-southern regions could experience hourly rainfall rates as high as 50 mm [2].
Local officials are monitoring the situation as the weather system persists. The recurrence of these heavy downpours in a short window increases the likelihood of soil saturation and flash floods, particularly in mountainous inland areas.
An anchor for YTN said the agency released the preliminary warning as night approached [3]. Reporter Jang A-young said that concentrated heavy rain was predicted for the night following the previous day's storms [4].
“Daegu and North Gyeongsang Province could see maximum rainfall of 150 mm”
The re-issuance of a preliminary warning indicates a volatile weather pattern where moisture-rich clouds are stalling or cycling over the same inland corridors. When high-intensity hourly rainfall—such as 50 mm—follows a previous night of extreme rain, the ground's absorption capacity is significantly reduced, which elevates the risk of landslides and urban flooding even if total rainfall numbers seem moderate.
