According to weather authorities, apparent temperatures rose above 33°C across most of the country on July 31 as the heat wave continued. Especially in the south, apparent temperatures exceeded 35°C, and in the South Gyeongsang area the maximum apparent temperature was forecast above 38°C — heat at a life-threatening level.

Heat built up during the day did not dissipate at night, and tropical nights raged. Tropical nights, in which the morning low does not fall below 25°C, appeared across most of the country, leaving little relief from the heat even after dark.

Heat illness is concentrated from late July to early August. The elderly, outdoor workers and other vulnerable groups need particular care. The Korea Disease Control and Prevention Agency urged people to follow heat-safety rules such as drinking enough water and avoiding midday outdoor activity.

In the Chinese community in Korea, many work in outdoor or high-heat environments such as restaurants and shops. Heat-safety rules know no nationality; it is wise to learn in advance where the nearest cooling shelters are and how to respond in an emergency.

Hwagyo Sibo reports seasonal-disaster information as fact. Heat waves recur every year, but the greatest harm concentrates on those least prepared. Information and preparation are themselves safety.