South Korean weather authorities have lifted most heat-wave and tropical-night warnings after a persistent heat dome over the region finally cracked [1].
The shift marks a critical break in a period of extreme weather that has strained public health and infrastructure across the peninsula. While the immediate intensity of the heat has diminished, the region now faces a transition toward typhoon season.
Cold air from the northeast entered the atmosphere, disrupting the high-pressure system that had suppressed the lower atmosphere [1]. This atmospheric change allowed temperatures to drop, though most of the country continues to see temperatures above 30 °C [1]. In Seoul, daytime temperatures have remained below 35 °C, and tropical nights disappeared for two consecutive days [1].
The relief follows a grueling stretch of nighttime heat in several major cities. Busan experienced tropical nights for 24 days [2], while Daegu recorded 21 days of nighttime heat [2].
Despite the lifting of warnings in most areas, the southern region of the country continues to struggle with a lingering drought [1]. Authorities said that the lack of rain has kept the soil dry despite the break in the heat dome.
Weather experts are now monitoring new variables that could impact the region's recovery. Ban Ki-sung, a K-Climate representative and YTN disaster-advisory committee member, said the "double bombing" of extreme heat has vanished [2].
The next major weather variable is the arrival of north-moving typhoons, specifically Typhoon Bi-gureum [1]. These systems are expected to bring additional moisture to the peninsula, which may alleviate the drought in the south, but could introduce new risks of flooding and wind damage [1].
“South Korean weather authorities have lifted most heat-wave and tropical-night warnings after a persistent heat dome over the region finally cracked.”
The cracking of the heat dome signals the end of a peak summer temperature cycle, but it shifts the national risk profile from heat-related illness to storm-related disasters. The arrival of Typhoon Bi-gureum represents a double-edged sword for South Korea: it provides a necessary mechanism to break the southern drought, yet introduces the volatility of high-wind events and heavy precipitation.
