Extreme rainfall triggered flooding and a building collapse in Busan on Monday morning [1].
The incident highlights the vulnerability of urban infrastructure to sudden, high-intensity weather events that can overwhelm drainage systems and destabilize ground foundations.
In the Daedapo area, a building ceiling collapsed around 4:00 KST [2]. The structure failed after heavy rain fell throughout the night, according to YTN reporter Kim Geun-woo [1]. Kim said no one was injured in the collapse [1].
The weather system brought intense precipitation across several districts, including Gangseo-gu, Saha-gu, and Yeongdo-gu [1]. In Gangseo-gu, rainfall exceeded 100 mm per hour [3]. This volume of water led to widespread inundation, with several shops reported as flooded [1].
Local officials said the saturated ground has become unstable. Because the soil has weakened, there is a heightened risk of additional structural failures or landslides in the affected regions [1].
Weather forecasts indicate that the danger has not passed. An anchor for YTN said more rain is expected to continue through Tuesday [1]. Authorities are monitoring the southern coast as they prepare for potential additional damage to homes and businesses.
“Fortunately, no one was injured in the collapse.”
The occurrence of rainfall exceeding 100 mm per hour suggests a shift toward more extreme precipitation events in South Korea's coastal cities. When such volumes fall in a short window, traditional urban drainage often fails, shifting the risk from simple flooding to structural instability as the ground becomes oversaturated.
