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Tropical Storm Dujuan South of Japan and Taiwan

20.6N 126.5E

September 5th, 2009 Category: Tropical Storms

Tropical Storm Dujuan - September 4th, 2009

Tropical Storm Dujuan - September 4th, 2009

Enhanced image - September 4th, 2009

Enhanced image

Track of Dujuan - September 4th, 2009 © Univ. of Wisconsin

Track of Dujuan

Tropical Storm Dujuan (13W) is located approximately 475 nautical miles south-southeast of Okinawa, Japan. Here, the southern tip of Taiwan can be seen in the top left corner, while most of the Philippines below are obscured by convection associated with the storm.

Dujuan has tracked northeastward at 13 knots over the past six hours. Maximum significant wave height is 20 feet.

Animated multispectral imagery shows deep,flaring convection starting to consolidate about a low level circulation center (LLCC). Synoptic analysis indicates that the system is located in an area of favorably low vertical wind shear under an anticyclone aloft. Additionally, animated water vapor imagery depicts excellent equatorward and poleward outflow.

TS 13W will continue to track northeastward under the steering influence of the westward building mid-level ridge located to the northeast. By TAU 48 the system will track more poleward as the ridge builds slightly northwestward and by TAU 72 Dujuan should start to crest the subtropical ridge axis and track more east-northeastward along the northwestern periphery of the ridge.

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