The Korea Meteorological Administration forecast a nationwide rainstorm with strong winds for tomorrow, May 26, 2024 [1].
The storm poses a significant risk of flooding and landslides, particularly in mountainous and coastal regions where rainfall totals are expected to be extreme.
According to the agency, a low-pressure system approaching from the southwest is carrying abundant moisture across the region [1]. This system is expected to trigger heavy precipitation and high winds throughout the country.
Jeju Island's mountainous areas face the most severe conditions, with rainfall expected to exceed 300 mm [1]. In these specific zones, hourly rainfall intensity could reach between 50 and 80 mm per hour [1].
The southern coast is also flagged for extreme weather, with expected rainfall exceeding 200 mm [1]. Southern inland areas are forecast to see a maximum rainfall of 100 mm [1]. Both the southern coast and southern inland regions may experience hourly rainfall intensity between 30 and 50 mm per hour [1].
Other regions will see more moderate precipitation. The capital region, along with Gangwon and Chungcheong provinces, are expected to receive between 30 and 80 mm of rain [1].
Local authorities typically monitor these metrics to issue emergency warnings for low-lying areas and steep terrain during such weather events, the agency said [1].
“Rainfall in Jeju’s mountainous areas expected to exceed 300 mm”
The concentration of extreme rainfall in the south and Jeju suggests a highly volatile weather system that could disrupt transportation and agriculture. While the capital region faces moderate rain, the intensity of the southern precipitation—particularly the hourly rates in Jeju—increases the immediate risk of flash floods and geological instability in mountainous terrain.
