Nationwide Rain from August 15 to 17: Over 50mm/hour Downpours Expected
Rainfall May Relieve Southern Drought, but Watch for Flooding and Landslides

Rain is expected nationwide during the Liberation Day holiday. In particular, torrential downpours of more than 50 mm per hour are forecasted, especially along the southern coast, in the areas around Jirisan, and in the mountainous regions of Jeju, so caution is advised regarding flooding, landslides, and other potential damages.

On the afternoon of the 14th, the first day of the extension of the National Fire Mobilization Order, a firefighter from the Uijeongbu 119 Center at Suwon Fire Station under the Gyeonggi Province Fire Headquarters is providing water at a farm in Cheongdo-myeon, Miryang-si, Gyeongnam. Photo by Yonhap News

On the afternoon of the 14th, the first day of the extension of the National Fire Mobilization Order, a firefighter from the Uijeongbu 119 Center at Suwon Fire Station under the Gyeonggi Province Fire Headquarters is providing water at a farm in Cheongdo-myeon, Miryang-si, Gyeongnam. Photo by Yonhap News

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According to the Korea Meteorological Administration on August 14, the weakened low-pressure system that resulted from Typhoon No. 13, 'Dolphin,' which made landfall in China, is expected to bring rain across the country from August 15 to 17. The rain will begin in Jeju on August 15, expand to Jeonnam and Gyeongnam in the afternoon, and further spread to southern Chungcheong, Jeonbuk, and Gyeongbuk by nighttime. From August 16 to the morning of August 17, most regions across the country will experience rain.


Expected precipitation between August 15 and 16 is as follows: Busan, Ulsan, and Gyeongnam will receive 50 to 150 mm; Gwangju and Jeonnam 50 to 100 mm; Daegu, Gyeongbuk, Jeonbuk, and Jeju will receive 30 to 80 mm. Over 200 mm is expected in the western southern coast of Gyeongnam and the vicinity of Jirisan, while more than 150 mm is likely in the southern coast of Jeonnam, the Jirisan area, and the mountainous regions of Jeju.


Chungcheong, Ulleungdo, and Dokdo are expected to receive 20 to 60 mm; the Seoul metropolitan area, the five northwestern islands in the Yellow Sea, and the inland and mountainous areas of Gangwon Province 5 to 30 mm; and the east coast of Gangwon about 5 mm of rain.


Strong winds carrying abundant moisture from the south are forecasted to bring heavy rainfall primarily to the southern coast, around Jirisan, and the mountainous areas of Jeju. In the mountainous regions of Jeju, hourly rainfall of 30 to 50 mm, and at times over 50 mm, is expected from late night on August 15 to the morning of August 16. In the southern coast of Jeonnam and the Jirisan area, torrential rain of 30 to 50 mm per hour (with local heavy downpours exceeding 50 mm) is expected from the early morning until noon on August 16. In the southern coast of Gyeongnam and the Jirisan area, similar rain intensity is expected from the morning to the afternoon of August 16.


This rain is expected to help relieve the drought that has continued recently in the southern regions. However, because a large amount of rain will fall in a short period of time after a prolonged dry spell, there is also a possibility of damages such as flooding of farmland, river overflows, landslides, and flooding in low-lying areas.


Temperatures are expected to remain at seasonal averages. On August 15, Liberation Day, morning lows will range from 20 to 25 degrees Celsius, with afternoon highs between 27 and 33 degrees. Highs will reach up to 31 degrees in Seoul and Busan, 33 degrees in Gwangju, and 32 degrees in Daegu and Ulsan.



Along the southern coast, strong winds with gusts around 55 km/h are expected from the afternoon of August 16. There will also be swells along the coasts of Jeonnam and Jeju, which, combined with the spring tide, may raise sea levels, increasing the risk of coastal safety accidents.


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