South Korea is under a nationwide severe heat-wave warning as tropical nights and extreme temperatures grip the country [1, 2].
The weather event is significant because the Korea Meteorological Administration (KMA) and local disaster safety headquarters have issued a "심각" (severe) level alert, the highest possible tier. This indicates a critical risk to public health and infrastructure due to stagnant atmospheric conditions and high humidity [1, 2].
In Seoul, temperatures during the morning commute approached 30 °C [1]. The current temperature in the capital was reported at 26.7 °C [2], while Cheongju and Jeju recorded temperatures just over 27 °C [2]. Forecasts for Seoul vary between a midday projection of 33 °C [2] and a maximum perceived temperature of 35 °C [1].
The Yeongnam region in the southeast is experiencing more extreme conditions. Midday temperatures in Daegu and Miryang are projected to reach 38 °C [2]. Some forecasts place the maximum perceived temperature in Daegu at 38 °C [1].
Local authorities have already moved to escalate emergency responses. Gyeonggi Province raised its heat-wave warning to the "심각" level at 18:00 on May 12, 2024 [3]. This action reflects the increasing frequency of tropical nights, where overnight lows remain high, which prevents the environment from cooling down before the next day's heat peak.
Despite the intense heat, the KMA said that some areas may experience localized rain showers ranging from five to 40 mm [2]. These showers are expected to be sporadic and may not significantly lower the overall humidity or temperature across the affected regions [2].
Officials continue to monitor the Yeongnam region closely as the heat persists. The combination of high humidity and stagnant air is driving temperatures upward, increasing the risk of heat-related illnesses for the population [1].
“South Korea is under a nationwide severe heat-wave warning”
The issuance of a '심각' level alert signifies that the heat-wave has surpassed typical seasonal variations and entered a critical phase. The prevalence of tropical nights is particularly concerning because it eliminates the nocturnal cooling period, placing continuous physiological stress on residents and increasing the load on energy grids for air conditioning.
