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Tropical Storm Claudia (03S) Expected to Strengthen

4.2S 76.8E

December 9th, 2012 Category: Tropical Storms

Tropical Storm Three (03S) – December 7th, 2012

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Track of Tropical Storm Three (03S) - December 6th, 2012 © Univ. of Wisconsin

Track of TS 03S

Tropical Storm Claudia (03S) located approximately 480 nm south-southeast of Diego Garcia, has tracked southward at 05 knots over the past six hours.

Satellite imagery reveals a mature tropical cyclone with a well-formed eye that has now expanded to approximately 15 nm in diameter. The intensity is assessed at 105 knots.  Maximum significant wave height is 34 feet.

Upper-level analysis indicates Claudia is in a favorable environment, nearly under the sub-tropical ridge axis with weak (05-10 knots) vertical wind shear (VWS) and a robust poleward outflow channel. These favorable conditions are forecast to remain in place for the next 24-36 hours, after which rapidly decreasing SST values and increasing VWS associated with a deepening trough to the west will start to weaken the system.

By TAU 72, TC 03S will begin extra-tropical transition as it interacts with the baroclinic zone poleward of 25 degrees south. Extra-tropical transition will be complete by TAU 96.

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