The Korea Meteorological Administration issued a severe heat-wave warning for Seoul and Gyeonggi province as temperatures reached 39 °C [1].
This extreme weather occurs during *Ipchu*, the traditional seasonal marker for the beginning of autumn. The persistence of such high temperatures during a seasonal transition indicates a volatile weather pattern that threatens public health and infrastructure across the metropolitan region.
Seoul has experienced tropical nights for more than 15 days, according to YTN caster Won Yi-da [3]. Despite the arrival of the autumn marker, Won said the weather remains very hot [2]. The severe warning, known as *jungdae-gyeongbo*, was triggered by the spike to 39 °C [2].
While the capital region battles extreme heat, different weather patterns are expected for the east coast. Forecasters warn that heavy rain will arrive over the weekend. Depending on the reporting source, maximum rainfall estimates range from 120 mm [4] to 150 mm [2].
A YTN weather reporter said that the east coast should expect torrential rain reaching up to 150 mm [2]. These forecasts suggest a stark contrast in weather conditions across the peninsula, with scorching heat in the west and potential flooding in the east.
Local authorities have urged residents in the Seoul metropolitan area to take precautions against heat-related illnesses. The combination of prolonged tropical nights and record-high daytime temperatures has placed significant stress on the city's energy grid and public health services.
“Seoul is 39 °C while the city has experienced tropical nights for more than 15 days.”
The intersection of a severe heat-wave warning and forecasted torrential rain illustrates the increasing volatility of South Korea's seasonal transitions. When extreme heat persists into the traditional start of autumn, it often signals an atmospheric instability that can lead to the kind of heavy, localized precipitation predicted for the east coast, complicating disaster management efforts for the government.
