South Korea has entered a severe heat-wave period following the conclusion of heavy seasonal rains [1].

This sudden transition to extreme heat creates significant public health risks and puts pressure on the national power grid as cooling demands spike across the country.

Extreme temperatures have been recorded across the Yeongnam region, with Daegu Sinam-dong reaching 39.2°C [1]. Gyeongju recorded a temperature of 39°C [1]. Other locations in the region, including Changnyeong, Yangsan, and Daegu, also saw temperatures exceed 38°C [1].

Heat-wave warnings are currently in effect for 19 locations nationwide [1]. The weather system is characterized by a combination of a North Pacific high-pressure system at low levels, and a Tibetan high-pressure system aloft.

Kim Min-kyung, a weather and disaster reporter for YTN, said the current conditions exist because hot air is trapped over the peninsula [1].

An anchor for YTN said the country has entered a full-scale heat-wave phase now that the "water bomb" rains have receded [1]. The meteorological conditions suggest that these high temperatures will persist for the time being as the atmospheric pressure systems remain locked in place.

“South Korea has entered a full-scale heat-wave phase now that the 'water bomb' rains have receded.”

The rapid shift from extreme precipitation to a severe heat wave demonstrates the volatility of the peninsula's summer weather patterns. The trapping of hot air by dual high-pressure systems suggests a stagnant atmospheric condition that may prolong the heat wave, increasing the risk of heat-related illnesses and agricultural stress in the Yeongnam region.