Heavy Rain and Winds Nationwide...Up to 80 mm in the Capital Region, Chungcheong and Jeolla [FN Weather]

[Financial News]  
Heavy rain and strong winds are expected nationwide on the 18th. Up to 80 mm of rain is forecast for Seoul, Incheon and Gyeonggi, as well as the Chungcheong and Jeolla regions. Heavy rain of 20–30 mm per hour will be concentrated in the capital region and Chungcheong from during the day, and in southern regions from nighttime. Wind warnings are in effect for the five West Sea islands, Heuksando and Hongdo, and wind advisories may be expanded to the capital region and inland areas of South Chungcheong, among other places.
According to the Korean Meteorological Administration, daytime highs nationwide are expected to range from 20 to 26 degrees. Skies will be mostly cloudy nationwide, with rain spreading to the central regions and Jeolla in the morning and to most parts of the country in the afternoon. Rain will mostly stop in the central regions tonight, but is expected to continue in southern regions until the morning of the 19th and on Jeju Island through the daytime.
Expected rainfall by region is 30–80 mm in Seoul, Incheon and Gyeonggi, the five West Sea islands, Daejeon, Sejong and South Chungcheong, North Chungcheong, Gwangju and South Jeolla, and North Jeolla. Gangwon’s inland and mountainous areas are expected to get 20–70 mm, and its east coast 5–20 mm. Rainfall of 10–60 mm is forecast for Daegu and North Gyeongsang, and Busan, Ulsan and South Gyeongsang, while Ulleungdo and Dokdo are expected to get 5–40 mm. Jeju’s mountainous areas are forecast to receive 30–80 mm, with 10–60 mm elsewhere on the island. The rainfall estimates for the capital region and Gangwon Province cover the 18th only; those for other regions are cumulative totals for the 18th and 19th.
The periods of heavy rain will vary by region. Rainfall of 20–30 mm per hour is expected in Seoul, Incheon, Gyeonggi, Daejeon, Sejong and South Chungcheong from noon to 6 p.m.; in Gangwon’s inland and mountainous areas from noon to 9 p.m.; and in North Chungcheong from 3 p.m. to 9 p.m.
Heavy rain will be concentrated in North Jeolla from 3 p.m. to midnight, and in Gwangju and South Jeolla from 9 p.m. until 6 a.m. on the 19th. Rainfall of 20–30 mm per hour is expected in Busan, Ulsan and South Gyeongsang from 9 p.m. tonight until 6 a.m. on the 19th, and in Daegu and North Gyeongsang from 9 p.m. until 3 a.m. on the 19th. Heavy rain is forecast for Jeju Island between midnight and 9 a.m. on the 19th.
Strong winds are also expected. According to the weather alerts issued by the Korean Meteorological Administration at 8:36 a.m. today, wind warnings are in effect for the five West Sea islands (Baengnyeongdo and Daecheongdo) and Heuksando and Hongdo in South Jeolla. Wind advisories have been issued for the South Chungcheong coast, the Jeolla coast, some areas of Jeju Island, and Ulleungdo and Dokdo, among other areas.
In areas under wind advisories—the South Chungcheong and Jeolla coasts—strong winds with gusts of at least 20 meters per second are expected through tonight. The same is forecast for Jeju’s mountainous areas and the mid-mountain area of Jeju City until early on the 19th. Gusts of at least 25 meters per second are expected in mountainous areas. Wind advisories may be expanded to the capital region and inland South Chungcheong from this morning, and to the mountains of Gangwon and the east coast from the afternoon.
Strong winds and high waves are also expected at sea. Storm warnings are in effect for the inner and outer parts of the central West Sea’s offshore waters. In areas under storm advisories, winds will blow strongly at 9–21 meters per second, with waves reaching 1.5–4 meters. Waves of 5 meters or higher are expected in the outer offshore waters of the central West Sea and the offshore waters of the central East Sea.
The Korean Meteorological Administration forecast that gusts, thunder and lightning would accompany rain in affected areas, with considerable regional differences in rainfall amounts and intensity. It urged particular caution over flooding in low-lying areas where fallen leaves may impede drainage, sewer and drain backflow, and flooding in underpasses. It also stressed the need to prepare for possible damage to facilities and accidents involving falling objects due to strong winds, as well as disruptions to aircraft operations.

[email protected] Lee Bo-mi Reporter