The Korea Meteorological Administration at 10:00 on the morning of the 12th issued its first top-level heat alert under last month’s upgrade, covering Gyeongsan and Pohang in North Gyeongsang Province and advising residents to suspend outdoor activity. The upgrade, effective June 1, added a top-tier severe heatwave alert; the threshold is two consecutive days with maximum apparent temperature ≥35°C in an area plus an expected apparent temperature ≥38°C or an actual maximum temperature ≥39°C.