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Super Typhoon Chaba to create dangerous conditions in South Korea and Japan this week

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Super Typhoon Chaba will threaten lives and property across mainland Japan and South Korea this week after lashing the Ryukyu Islands on Monday night.

Chaba reached super typhoon status, strengthening to the equivalent of a Category 5 hurricane, on Monday afternoon, local time.

Powerful winds, torrential rain and rough seas around Chaba's center will pose significant danger to shipping interests across the East China Sea through Tuesday night.

Residents of southern mainland Japan and southern South Korea need to prepare for Chaba to make a direct hit or pass dangerously close on Tuesday night into Wednesday.

After battering Okinawa on Monday night, Chaba will turn toward mainland Japan and southern South Korea on Tuesday as it moves across the East China Sea.

All residents of South Korea and Japan should monitor the progress of Chaba closely as a small shift in track could result in significant changes to the forecast.

Chaba is currently expected to move through the Korea Strait on Wednesday before barreling into the Sea of Japan and making landfall in western Honshu on Wednesday night.

While Chaba is currently a powerful super typhoon, the cyclone will encounter conditions that cause it to weaken prior to reaching Japan and South Korea.

Despite some weakening, Chaba will remain a powerful and dangerous typhoon as it lashes both South Korea and Japan.

Southern South Korea is likely to bear the brunt of Chaba's impacts as the center passes near or just south of the southern coastline on Wednesday.

Kyushu, Shikoku and southwestern Honshu will endure the most significant impacts in Japan on Tuesday night and Wednesday. Damaging winds, flooding rain and mudslides are all possible.

Wind gusts of up to 130 km/h (80 mph) can cause damage across western Kyushu, including around Nagasaki. Damaging wind can also advance northward across southwestern Honshu and into Yamaguchi and Shimane.

Conditions will improve in these areas on Wednesday as the worst impacts shift into western and northern Honshu.

Rainfall will average 25-75 mm (1-3 inches) across northern Honshu as Chaba quickly moves through the area. Localized amounts over 125 mm (5 inches) are possible.

The heaviest rain is expected to fall to the north of Niigata and Sendai but will also spare Hokkaido.

The Greater Tokyo Area will escape the worst impacts from Chaba with a period of light rain and gusty winds expected late Wednesday into Wednesday night.

The combination of rain and wind could cause some travel disruptions.

A second tropical threat may develop in the western Pacific and could bring impacts to the northern Philippines, Taiwan and southeastern China later this week.