Toraji Brings Heavy Rainfall to Southern Japan

By Eric Leister, Meteorologist
September 5, 2013; 4:22 AM ET
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Just a few days after the remains of Kong-rey flooded parts of Japan, Toraji brought another round of heavy rainfall to southern Japan.

Tropical Storm Kong-rey drenched parts of southern Japan, as well as northern Honshu and Hokkaido with 75-150 mm (3-6 inches) over the weekend. One of the hardest hit areas was Kagoshima, in the south, where more than 250 mm (10 inches) of rain fell Saturday through Monday. Toraji has brought around 100 mm (4 inches) of additional rain to the Kagoshima area.

While heavy rainfall impacted some areas, parts of eastern Honshu, including Tokyo, remained dry over the weekend with temperatures well above normal as Kong-rey passed to the west. Toraji took a more easterly track bringing rainfall into Tokyo. As expected the heaviest rainfall has remained well south and west of the city thus far.

The weather was unsettled near Tokyo on Monday as well when a thunderstorm caused a possible tornado just north of the city in Koshigaya, according to

The storm and possible tornado are responsible for at least 63 injuries along with widespread damage to automobiles and homes.

Satellite image of Tropical Storm Toraji from Tuesday night, courtesy of the Joint Typhoon Warning Center.

Taiwan was impacted by Toraji as it developed just north of the island over the weekend. Heavy rainfall led to widespread flooding problems in the north. Mudslides were also reported across the region as more than 300 mm (12 inches) of rain fell.

Western Pacific Tropical Center
Tokyo, Japan, Forecast
Video of Taiwan Mudslide

Toraji made landfall across southern Kyushu on Tuesday night before weakening as it passed near the southern coastline of Shikoku on Wednesday. Widespread rainfall of 75-150 mm (3-6 inches) was reported in these areas with slightly lesser amounts across southwest Honshu.

Toraji will continue to move to the northeast spreading the heaviest rainfall across central Honshu over the next 24 hours as the storm transitions into a tropical rainstorm. Additional rainfall amounts of 25-75 mm (1-3 inches) will be possible across central and eastern Honshu during this time.

Photo courtesy of

Although Toraji has weakened a stalled frontal boundary will persist over Japan into the upcoming weekend so unsettled weather will continue. Although no widespread flooding or mudslides are anticipated, localized heavy rainfall can result in some flooding problems due to the heavy rainfall that has already fallen over the region.


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