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Tropical Cyclone 19S Moves Eastward, Weakens

March 10th, 2009 Category: Tropical Cyclones

Tropical Cyclone 19S - March 10th, 2009 © CIMSS-Univ. of Wisconsin

Tropical Cyclone 19S - March 10th, 2009

TC 19S - March 9th, 2009 © JTWC

TC 19S - March 9th, 2009

Tropical Cyclone 19S, located approximately 690 nautical miles southwest of Cocos Island, has tracked eastward at 4 knots over the past 6 hours. Maximum significant wave height is 10 feet.

The cyclone has weakened considerably under the detrimental effects of increasing vertical wind shear (VWS).

The effects of the VWS are evident in a 091919z AMSRE image showing apartially exposed low level circulation center (LLCC) with the majority of the convection sheared to the Southeast.

The current intensity is based upon Dvorak estimates of 30 knots, and a 091536Z ASCAT pass showing 20 to 25 knot winds near the center.

The LLCC is forecast to become quasi-stationary under weakening steering influence as the structure of the storm degrades with increasing vertical wind shear.

This is the final warning on this system by the Joint Typhoon Warning Center, although the system will be closely monitored for signs of regeneration.

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