South Korean authorities issued a heavy-rain warning for central-northern Gangwon Province on Saturday after intense showers triggered significant flood risks [1].
The emergency measures aim to prevent landslides and the isolation of local communities as rainfall intensifies across the region. The situation has prompted the opening of floodgates at the Paldang and Cheongpyeong dams to manage rising water levels [1, 2].
Heavy rainfall began to intensify after 2 a.m. KST on July 18 [1]. By 4:30 a.m. KST, a formal heavy-rain warning became effective for the areas of Cheorwon, Hwacheon, Chuncheon, and Hongcheon [1, 3].
Weather monitors recorded significant accumulation in the early hours of the day. From midnight until 5 a.m. KST, Hongcheon and Chuncheon received as much as 80 mm of rain [1]. At the time of reporting, hourly rainfall intensity was measured at 30 mm per hour or more [1].
The weather system is affecting several regions, including Seoul and Gyeonggi, with specific focus on the Iam Lake area in Chuncheon [1, 2]. Local officials are monitoring the dams closely to mitigate the risk of overflow as the storm persists.
"The rain became heavier after 2 a.m.," a reporter for YTN said [1].
Authorities continue to warn residents in the affected central-northern regions to remain vigilant of potential flash floods and soil instability [1, 2].
“Hongcheon and Chuncheon received as much as 80 mm of rain”
The coordinated release of water from the Paldang and Cheongpyeong dams indicates that river levels reached a critical threshold where controlled discharge was necessary to prevent catastrophic dam failure or uncontrolled flooding in downstream urban areas like Seoul and Gyeonggi.
