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Tokyo Lashed With Heavy Rain, Flooding

By Eric Leister, Meteorologist
June 8, 2014; 5:30 AM ET

The Greater Tokyo Area will experience several days of moderate to heavy rainfall through the first part of the weekend.

A slow-moving storm system has already brought a swath of 100-200 mm (4-8 inches) of rain to southern Japan, including the far northern Ryukyu Islands, eastern Kyushu, Shikoku and southern Honshu. Local rainfall amounts have exceeded 380 mm (15 inches) across parts of southern Shikoku and Honshu.

Heavy rainfall from Wednesday through Thursday totaled more than 500 mm (20 inches) in the city of Owase, in southern Honshu.

The heavy rain pushed into Tokyo on Friday and will continue through Saturday. More than 150 mm (6 inches) have already fallen in the city with local amounts approaching 200 mm (8 inches)

Raindrops on a window in Tokyo, courtesy of Thinkstock.

Rainfall amounts in the Greater Tokyo Area will average 150-200 mm (6-8 inches) through Saturday. A few places, especially in the higher elevations to the north and west, will be inundated by 300 mm (12 inches). Oshima Island, just to the southwest of Tokyo, has seen near 5 inches of rain in the past 24 hours ending early Sunday morning, local time.

RELATED:
Japan Weather Center
Detailed Forecast for Tokyo
Interactive Japan Weather Radar

The heavy rain that has already fallen has heightened flood concerns across the region, especially in any poor drainage and urban areas. During the heaviest rainfall, street flooding will be possible in urban areas, while mudslides will be a threat near any areas of higher terrain.

The threat of some rain and even a thunderstorm will continue early next week, but the heaviest rainfall will have ended across the region.

The views expressed are those of the author and not necessarily those of AccuWeather, Inc. or AccuWeather.com

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