Disaster-level heavy rain dumped more than 800mm [2] of precipitation on Geoje and the South Gyeongsang coastal area overnight.
The scale of the rainfall threatens critical infrastructure and public safety in the southern coastal region. Local authorities have maintained a rain warning for Geoje as the system continues to stall.
Weather officials said rainfall intensity exceeded 100mm per hour [1] in some areas during the overnight event. In the Myeongsa Beach area of Geoje, records showed 53mm [5] of rain fell within a single hour.
Meteorologists said the extreme weather is caused by a low-pressure system to the west and a high-pressure system to the east. This atmospheric configuration is trapping rain clouds over the region, preventing them from moving eastward.
Forecasts for additional rainfall vary between 80mm [3] and 100mm [4] as the system persists. A YTN reporter said heavy rain continues to fall across the South Gyeongsang coastal area.
Residents in the affected coastal zones are being urged to remain vigilant. The combination of saturated ground, and continued high-intensity bursts, increases the risk of landslides and flash floods in the rugged terrain of the South Gyeongsang province.
“Disaster-level heavy rain dumped more than 800mm of precipitation on Geoje.”
The stalling of rain clouds due to opposing pressure systems creates a 'training' effect, where storms repeatedly pass over the same area. For Geoje, exceeding 800mm of total rainfall represents an extreme weather event that likely surpasses the drainage capacity of local urban infrastructure, increasing the probability of long-term flood damage.
