South Korea is preparing for an intensifying heatwave as temperatures move west toward Seoul, the country’s most populous metropolitan area. Multiple outlets report that an extreme heat episode has already produced the nation’s highest recorded temperature. In the south-eastern city of Yangsan, Sunday’s temperature reaches 42.5C, the highest value recorded in 122 years of weather observations. Authorities and residents respond to the dangerous conditions with measures such as trucks dousing roads with water and increased monitoring by health workers. As the heat shifts west, Seoul is expected to receive its first “severe heatwave warning” on Tuesday. Forecasts cited for the capital indicate temperatures around 38C on Tuesday, followed by several days of sustained heat with highs around 37C. The heatwave’s continued movement raises concern for vulnerable groups, and nursing and welfare checks are described as part of preparedness efforts. The broader situation is framed as deadly, with the heatwave already linked to deaths and record-level temperatures in parts of the country before reaching the capital region.