On August 17, a substitute holiday for Liberation Day, rain is expected across most of the country until the morning, with continued rainfall in the southeastern region and Jeju Island lasting into the night.
According to Yonhap News on August 16, the southeastern region is forecasted to experience heavy rain of 20 to 50 mm per hour until dawn, while Jeju Island may see 20 to 30 mm per hour from early morning to morning.
Areas experiencing rain should be cautious of strong winds, thunder, and lightning, as very heavy rainfall is anticipated.
The expected rainfall amounts over two days include 5 to 10 mm in Seoul, Incheon, and Gyeonggi Province; 5 to 20 mm in southern Gangwon; around 5 mm in central and northern Gangwon; 5 to 30 mm in Chungbuk; 5 to 10 mm in Daejeon, Sejong, and Chungnam; and 20 to 60 mm along the eastern coast of Jeonnam, with 5 to 30 mm in Gwangju, Jeonnam, and Jeonbuk.
In Busan, Ulsan, and the southern coast of Gyeongnam, rainfall is expected to reach 50 to 100 mm (with some areas exceeding 150 mm), while Ulleungdo and Dokdo may see 30 to 80 mm. The inland areas of Gyeongbuk, excluding the inland regions of Gyeongnam and Daegu, are expected to receive 20 to 70 mm (with eastern Gyeongnam inland areas exceeding 100 mm and southern Gyeongbuk coastal areas exceeding 80 mm), and Jeju Island is forecasted to receive 20 to 70 mm (with mountainous areas exceeding 100 mm).
Showers may occur in the central region and Jeolla Province in the afternoon and evening.
Again, caution is advised for strong winds and thunder and lightning.
The expected rainfall from these showers includes 5 to 50 mm in Seoul, Incheon, and Gyeonggi Province; 5 to 60 mm in inland and mountainous areas of Gangwon; 5 to 50 mm in Chungbuk; 5 to 40 mm in Daejeon, Sejong, and Chungnam; and 5 to 60 mm in Jeonbuk, with 5 to 40 mm in Gwangju and Jeonnam.
As the rain subsides, a heat wave is expected to return, particularly in the metropolitan area, Chungnam, and Jeolla Province, with perceived temperatures around 33 degrees Celsius.
Some urban and coastal areas may experience tropical nights, with temperatures remaining above 25 degrees Celsius.
The morning low is forecasted to be between 21 and 25 degrees Celsius, while the daytime high is expected to range from 27 to 32 degrees Celsius.
Waves in the sea are expected to reach 0.5 to 2.5 meters in the East Sea and South Sea, and 0.5 to 1.5 meters in the West Sea.
In the offshore waters (about 200 km from the coastline), wave heights are expected to be 1.0 to 3.5 meters in the East Sea, 0.5 to 2.5 meters in the West Sea, and 1.0 to 3.5 meters in the South Sea.
* This article has been translated by AI.
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