Weather Forecast: Rain Expected Nationwide on Dano Day, Heavy Rain Warnings for Southern Regions and Jeju

Tomorrow, June 19, which marks Dano Day, the weather across the country is expected to be mostly cloudy, with rain beginning in Jeju Island in the morning and spreading nationwide by night, temporarily lowering temperatures.

According to the Korea Meteorological Administration on June 18, this rain is attributed to a low-pressure system developed between the warm North Pacific high-pressure system to the south and cold air from the north, along with a stationary front.

Rain will start in Jeju Island in the morning, expand to the central region and northern Gyeongsangbuk-do by afternoon, and cover the entire country, including South Jeolla and South Gyeongsang, by night.

Most of the rain is expected to stop by the afternoon of June 20, but in the eastern part of Gangwon Province, it may continue until the morning of June 21.

Heavy rainfall is anticipated, particularly in the southern regions and Jeju Island, with expected precipitation of 50 to 150 mm in Jeju, 50 to 100 mm in eastern Gangwon, and 30 to 80 mm in the southern regions.

There is a high possibility of heavy rain warnings being issued for areas along the southern coast, including Gwangju, South Jeolla, Busan, Ulsan, and South Gyeongsang, where rainfall could exceed 100 mm. In the central inland areas, including Seoul, Gyeonggi Province, and Chungcheong, expected rainfall is between 5 to 30 mm (up to 60 mm if including the effects of the pressure trough).

However, meteorologists noted that this rain is due to a temporary southward shift of the pressure trough, and once the rain stops, cold air will flow back in, making it unlikely that this marks the start of the monsoon season.

Tomorrow's morning low temperatures will range from 17 to 22 degrees Celsius, while daytime highs will be between 25 and 32 degrees, similar to today. In Seoul, the temperature is expected to rise from a morning low of 22 degrees to a high of 32 degrees, with some areas in inland Gyeongsangbuk-do experiencing heat indices exceeding 33 degrees before the rain begins.