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Tropical Rainstorm Matmo to Impact Japan

By By Steve C. Travis, meteorologist
July 27, 2014, 5:20:49 AM EDT

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What was once Typhoon Matmo will continue to travel northeastward this weekend, bringing continued heavy rain and occasional gusty winds to portions of northern Japan.

After ravaging China and Taiwan earlier this week, Matmo has weakened some, but it will remain a dangerous storm as it heads toward the Korean Peninsula Friday and northern Japan this weekend.


South Korea, including Seoul, was spared from the worst of the storm but still picked up about a half of an inch (12 mm) of rain over the last 24 hours.

As Matmo gets picked up by a dip in the jet stream, it will accelerate to the northeast and impact portions of Japan on Sunday, namely the island of Hokkaido.

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Hokkaido can pick up average rainfall totals of 1-2 inches (25-50 mm) from Matmo, with locally higher amounts.

Heavy rainfall amounts over such a short time span can result in flooding and mudslides. While winds will not be considerably gusty, the combination of a brief wind gust and a very wet ground can easily uproot trees and power lines.

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