[Weather] Rain in Southern Regions and East Coast Early Next Week... Showers in Central Areas

[Image source=Yonhap News]

[Asia Economy Reporter Lee Jung-yoon] From Monday the 13th until the morning of the 15th, a trough will move from the southern sea to the East Sea, bringing rain to the southern regions and the east coast.

According to the Korea Meteorological Administration briefing on the 12th, cold northwesterly winds blowing between the high pressure over the Tibetan Plateau in southwestern China and the low pressure east of Mongolia will develop a low pressure system over central and southern China and bring cold air into the upper atmosphere over South Korea.

As the low pressure system over central and southern China moves from the southern sea to the East Sea, rain will begin falling from Jeju in the afternoon of the 13th. The rain will spread to the southern coast by the afternoon of the 14th and expand to parts of inland Gyeongsang Province by that night.

On the 15th, when the low pressure system is located over the East Sea, easterly winds along the edge of the low will bring rain to the east coast.

Precipitation amounts are expected to be 10 to 40 mm in the mountainous areas of Jeju, 5 to 20 mm in the mountainous areas of Gangwon, Gyeongsang, and Jeju, and around 5 mm along the east coast of Gangwon and the southern coast of Jeollanam-do.

In the afternoon of the 13th, showers caused by atmospheric instability will pour over the central regions. Showers are expected to bring 5 to 30 mm of rain to Seoul, northern Gyeonggi, central Gangwon Yeongseo, and northern Gangwon Yeongseo. Since the degree of atmospheric instability varies by region, precipitation amounts will also differ significantly. Gusty winds, thunder, and lightning may occur during the showers.

The 'blocking' phenomenon, which blocked the east-to-west flow of the atmosphere last week and periodically brought cold air southward to South Korea, is expected to dissipate around the 15th. However, even after that, cold air will continue to move southward from the north, causing showers due to atmospheric instability mainly in inland areas during the daytime.

As cold air periodically moves southward into the upper atmosphere over South Korea, a low pressure system developing over central and southern China may bring rain as it passes over the southern sea around the 18th. Currently, numerical forecast models predict different paths for the low pressure system, and forecasts are changing in real time.

With the southward movement of cold air, the North Pacific High is not expected to significantly expand its influence until around the 19th. If the North Pacific High does not expand, the monsoon season will be delayed. Typically, the monsoon begins in Jeju on June 19th (the average start date of the monsoon).

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