First Heatwave Warning of the Year... Nationwide Perceived Temperature Above 33°C

Heatwave Warnings Expanded to Most Areas Except Coastal Regions
First Heatwave Alerts Issued for Icheon, Yeoju, and Yangpyeong in Gyeonggi

On the 1st of July, heatwave warnings were issued for most regions nationwide.

Following the heatwave advisory issued the previous day for Seoul, the metropolitan area, and parts of Gangwon Yeongseo, the heatwave warnings were expanded by 10 a.m. on this day to most areas except the coastal regions. In particular, the first heatwave alerts of the summer were issued for Icheon-si, Yeoju-si, and Yangpyeong-gun in Gyeonggi, the plains of Hongcheon and Chuncheon-si in Gangwon, Buyeo-gun in Chungnam, and Uiseong-gun in Gyeongbuk.

First Heatwave Warning Issued This Year
Photo by Yonhap News

Heatwave warnings include heatwave alerts and heatwave advisories. Heatwave warnings are issued when damage is expected to be more severe than under a heatwave advisory. A heatwave advisory is issued when "the daily maximum apparent temperature is expected to remain at or above 33 degrees Celsius for two or more consecutive days," while a heatwave warning is issued when the apparent temperature reaches 35 degrees Celsius or higher. Additionally, a heatwave advisory is issued when "a rapid rise in apparent temperature or prolonged heatwave is expected to cause significant damage," whereas a warning includes the additional condition that damage is "expected to occur over a wide area."

The highest daytime temperatures on this day are expected to range from 25 to 34 degrees Celsius, 2 to 7 degrees higher than the previous day, with most areas expected to exceed 33 degrees Celsius at midday. Especially due to the humid conditions caused by the monsoon rains until the previous day, the apparent temperature will exceed 33 degrees Celsius.

The expected highest temperatures (apparent temperatures) in major cities on this day are Seoul 34°C (35°C), Incheon 30°C (32°C), Daejeon 34°C (34°C), Gwangju 31°C (33°C), Daegu 32°C (32°C), Ulsan and Busan 27°C (29°C).

Regarding ozone levels, the metropolitan area, Gangwon Yeongseo, Chungbuk, Chungnam, Jeonnam, Ulsan, and Gyeongbuk will experience "unhealthy" levels, while other regions will have "moderate" levels. The monsoon, which had entered a lull, is expected to continue as rain returns to Jeju on the afternoon of the 2nd.

This content was produced with the assistance of AI translation services.