On Wednesday, the 6th, strong rain accompanied by strong winds and thunder and lightning is forecasted for most regions across the country. The sky will be mostly cloudy, with rain expected in the central region and northern Gyeongbuk from early dawn through the night, while southern regions and Jeju Island are expected to see rain from the morning.
From the 6th to the 7th, cumulative rainfall is expected to be 30 to 100 mm in eastern Gyeonggi, inland and mountainous regions of Gangwon, 30 to 80 mm in the Chungcheong, Jeolla, and Gyeongsang regions, 20 to 60 mm in Jeju Island, and 10 to 40 mm along the eastern coast of Gangwon. In Seoul, Incheon, western Gyeonggi, and the five islands of the west sea, 30 to 100 mm of rain is forecasted for just the day of the 6th, while Ulleungdo and Dokdo are expected to receive 5 to 40 mm of rain.
In particular, the northwestern and eastern Gyeonggi regions, as well as some inland and mountainous areas of Gangwon, may see more than 150 mm of rain, while the Jeolla region may see more than 120 mm, and some areas of Chungcheong and Gyeongnam are expected to receive a maximum rainfall of over 100 mm.
In the metropolitan area and Gangwon, heavy rain of 30 to 50 mm per hour may concentrate from the morning through the afternoon, while the Chungcheong region may experience strong rain at a similar rate from late afternoon into the night. Locally, torrential rain reaching 70 mm per hour is also expected, resulting in significant differences in rainfall even within the same region.
Temperatures are expected to range from a low of 23 to 28 degrees Celsius in the morning to a high of 28 to 34 degrees Celsius in the afternoon, remaining around or slightly above the average.
Due to active rainfall and air diffusion, the concentration of fine dust is expected to remain at a 'good' level nationwide.
Wave heights are predicted to be 0.5 to 2.5 meters in the near seas of the East Sea and South Sea, and 0.5 to 1.5 meters in the near sea of the West Sea, while offshore, the East Sea may see heights of up to 3.5 meters, with the West Sea and South Sea also reaching a maximum of 3.5 meters. In particular, high waves along the southern coast and Jeju coast may surpass breakwaters or coastal roads, so caution for coastal safety accidents is necessary.