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Tropical Cyclone Imelda (21S) Dissipating

12S 54.8E

April 13th, 2013 Category: Tropical Cyclones

Tropical Storm Twenty One (21S) – April 12th, 2013

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Track of Tropical Storm Twenty One (21S) - April 12th, 2013 © Univ. of Wisconsin

Track of TC 21S

Tropical Cyclone Imelda (TC 21S) is expected to struggle in maintaining its structure but will continue to track along the southwestern periphery of a near-equatorial ridge to the northeast.

Vertical wind shear (VWS) values are expected to increase as the system tracks poleward, contributing to the gradual dissipation by TAU 36. There is a distinct possibility that the cyclone will dissipate sooner. As the system weakens, the steering flow will begin to shift to lower levels. Available numerical model shows a large spread in the tracks, therefore, there is low confidence in the current track forecast. Maximum significant wave height is 18 feet.

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