Flooding strikes South Korea, more heavy rain on the way
By Eric Leister, AccuWeather senior meteorologist
8/29/2018, 12:06:44 PM
A slow moving frontal boundary has sparked days of torrential rainfall across South Korea resulting in flooding across much of the country.
Heavy rainfall from Monday into Tuesday produced flooding across southern and central South Korea.
The downpours shifted northward on Wednesday causing flooding throughout northern South Korea, including Seoul.
The downpours fell at a rate of 75 mm (3 inches) per hour during the worst of the event.
The highest rainfall total was reported in South Jello Province where 455 mm (17.91 inches) accumulated since Monday.
The heaviest rain settled over Seoul and surrounding area Wednesday afternoon and evening causing significant travel disruption during the evening commute.
The frontal boundary will settle over southern South Korea the next several days continuing the threat for flooding.
Daily downpours through this weekend will lead to additional flooding and widespread travel disruptions.
The same frontal boundary will lead to heavy rainfall across northern Japan through Saturday morning.
The biggest concern will be across western coast and higher terrain of northern Honshu where the rain will be heaviest.
Both southern South Korea and parts of northern Honshu can expect additional rainfall of 100-200 mm (4-8 inches) with an AccuWeather Local StormMax™ of 300 mm (12 inches).
This amount of rainfall on top of the recent heavy rain will bring an increase risk for flooding, mudslides and travel disruptions.
Typhoon Jebi will approach Japan from Tuesday through Thursday of next week bringing the risk for another round of heavy rainfall to northern Japan. South Korea is expected to dodge any impacts from Jebi at this time.
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