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Tropical Cyclone Imelda (21S) with 55-Knot Winds

20.8S 52.7E

April 16th, 2013 Category: Tropical Cyclones

Tropical Storm Twenty One (21S) – April 14th, 2013

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Track of Tropical Storm Twenty One (21S) - April 14th, 2013 © Univ. of Wisconsin

Track of TC 21S

Tropical Cyclone Imelda (TC 21S), located approximately 370 nm east of La Reunion, has tracked south-southeastward at 05 knots over the past six hours.

Animated infrared satellite imagery depicts rapidly decaying deep convection, now sheared about 70 nm east of the system center. An SSMIS image depicts well-defined, tightly-wrapped shallow convective banding wrapping into the low- level circulation center with an isolated area of deep convection near 20S 64E.

There is good confidence in the initial position based on this image as well as an AMSU composite image. The initial intensity is assessed at 55 knots based on Dvorak intensity estimates ranging from 45 to 65 knots.

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