South Korea's Korea Meteorological Administration expanded the highest-level severe heat warning to cover the entire city of Seoul this week [1].
The expansion reflects a critical escalation in public safety efforts as the government treats the current heatwave as a national disaster. This response follows a period of extreme temperatures that have challenged the city's infrastructure and public health systems.
Officials said the expanded alert was issued because temperatures were forecast to exceed 38 °C [1]. The highest-level alert is triggered when temperatures reach 39 °C or the heat index exceeds 38 °C [1].
President Lee Jae Myung and the Korea Meteorological Administration are coordinating the response to the crisis [1]. The severity of the weather is underscored by reports that South Korea recorded a temperature of 42.5 °C, the highest in 122 years [2].
The human cost of the weather event has already become apparent. At least 16 people have died in Seoul as the city grappled with the record heat [3].
Local authorities are monitoring the situation closely as they implement emergency measures. The decision to cover the entire city with the severe warning ensures that all districts have access to the highest tier of emergency resources and public warnings, a necessary step given the scale of the temperature spikes [1].
“South Korea recorded 42.5 °C, the highest in 122 years.”
The classification of a heatwave as a national disaster indicates that South Korea is facing an unprecedented climatic event that exceeds standard emergency planning. By expanding the severe heat warning to all of Seoul, the government is acknowledging that the risk of heat-related mortality is no longer localized to specific vulnerable districts but is a systemic threat to the entire metropolitan population.



