Heavy Rainfall Up to 300mm Expected in Central Region from Tonight Until the 30th

Heavy and Widespread Rain Nationwide, Concentrated Precipitation at Night
First Peak from Night of 28th to Early Morning of 29th, Second Peak from Night of 29th
Beware of Flooding at Night, Tropical Nights Expected to Continue

On the 27th, affected by the monsoon front, citizens holding umbrellas hurried along Sejong-daero in Seoul. / Photo by Mun Ho-nam munonam@

[Asia Economy Reporter Han Jinju] From the 28th to the 30th, as the stationary front fluctuates, heavy monsoon rains of up to 300mm will fall in the central region.

On the 28th, the Korea Meteorological Administration (KMA) held an occasional briefing and announced that due to the influence of the stationary front from the night of the 28th until the morning of the 29th, heavy rain will fall mainly in the Seoul metropolitan area, Gangwon Yeongseo, and northern Chungcheong region. From noon to evening on the 29th, rain will fall mainly in northern Chungcheong and northern Jeonbuk. From the night of the 29th to the morning of the 30th, a second round of heavy rain will pour over the central region.

From the 28th to the 30th, the Seoul metropolitan area and inland/mountainous areas of Gangwon will receive over 300mm of rain in some places, while the Seoul metropolitan area, Chungnam, and central to northern Chungbuk regions will see 100 to 200mm of rain. Northern Jeonbuk and northern inland Gyeongbuk will receive over 150mm, and southern Chungbuk, Jeonbuk, northern inland Gyeongbuk, and the West Sea 5 islands will get about 50 to 100mm. Gangwon East Coast, western Jeonnam, and mountainous areas of Jeju Island will see 30 to 80mm.

This precipitation is characterized by very strong intensity due to the addition of a low-pressure system to the stationary front and the inflow of warm air. As the stationary front fluctuates, the timing of concentrated rainfall varies by region. From the night of the 28th to the morning of the 29th, the first round of heavy rain will focus on the Seoul metropolitan area, Gangwon Yeongseo, and northern Chungcheong. From noon to evening on the 29th, heavy rain will concentrate in southern Chungcheong and northern Jeonbuk. Currently, heavy rain advisories are only in effect for Gyeonggi and northern mountainous areas of Gangwon, but the areas under heavy rain warnings may expand.

On the 27th, affected by the monsoon front, citizens holding umbrellas hurried along Sejong-daero in Seoul. Photo by Mun Ho-nam munonam@

In particular, the rain falling in the central region from the night of the 29th to the morning of the 30th is expected to be stronger and heavier than the previous day. This is due to the collision of dry air and humid air at the stationary front, the expansion of the North Pacific High, and the compression of the stationary front, which strengthens the rain cloud band over the central region. The amount of precipitation and the areas of concentrated rain are highly variable depending on the position of the stationary front and the North Pacific High.

Lee Kwang-yeon, a forecaster and analyst at the KMA, explained, "A large amount of rain will fall all at once due to the developed stationary front caused by the meeting of humid air from the south and cold, dry air from the north," adding, "Very heavy rain will concentrate during nighttime hours, so caution is needed for flooding, inundation, and landslides."

According to the medium-term forecast, precipitation is expected in the Seoul metropolitan area and Gangwon Yeongseo region until the 1st, with cloudy weather continuing until the 4th, and rain expected nationwide on the 5th.

While the influence of the stationary front continues, tropical nights are also expected to persist. The forecaster explained, "The cloud band of the stationary front prevents the surface from cooling at night, causing tropical nights to continue. Tropical nights are likely to persist until the area moves out of the influence of the stationary front."

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