The Korea Meteorological Administration has lifted heat-wave and tropical-night warnings across most of South Korea after a large heat dome developed cracks [1, 2].
The shift in weather patterns provides relief after weeks of extreme temperatures, though the region now faces a transition toward potential typhoon-related precipitation.
Cold air from the northeast entered the lower atmosphere, which weakened the heat dome and allowed officials to cancel the alerts [1, 2]. Despite the weakening of the system, temperatures in many regions remain above 30 °C [1].
Certain cities experienced prolonged periods of intense nocturnal heat before the warnings were rescinded. Daegu saw 21 consecutive days of night-time heat [1], while Busan experienced 24 consecutive days [1].
In the capital, Seoul's daytime temperatures have stayed below 35 °C since the alerts were lifted [1]. The city also recorded two consecutive days without a tropical-night warning [1].
While the extreme heat is subsiding, other environmental challenges remain. Drought conditions persist in the southern parts of the country [1, 2].
Meteorologists said the next major influence on the weather will be a series of north-moving typhoon rain-cloud systems [1, 2]. These systems may impact the Honam region, Jeju Island, and other nationwide areas as they move toward the peninsula [1].
“The Korea Meteorological Administration has lifted heat-wave and tropical-night warnings across most of South Korea.”
The cracking of the heat dome signals the end of a peak summer temperature cycle, but it replaces one extreme weather risk with another. The arrival of typhoon rain-cloud bands could either alleviate the ongoing drought in southern South Korea or exacerbate the situation through flooding, depending on the intensity and trajectory of the systems.
