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Tropical Cyclone Cleo (03S) Gradually Weakens

8.6S 63.9E

December 11th, 2009 Category: Tropical Storms

Tropical Cyclone Cleo (03S) - December 9th, 2009

Tropical Cyclone Cleo (03S) - December 9th, 2009

Track of TC 03S - December 11th, 2009 © Univ. of Wisconsin

Track of TC 03S

Enhanced image

Enhanced image

On December 6th, a tropical disturbance formed in the central Indian Ocean. The storm was expected to strengthen slowly, however, the next day, the disturbance strengthened into a severe tropical storm and was designated Tropical Cyclone 03S. On December 8th, it strengthened rapidly to become the first Intense Tropical Cyclone of the southwest Indian Ocean cyclone season.

TC 03S sustained this strength for a day, as can be observed in this image from December 9th. The following day, it slowly weakened to a category 2 cyclone and continued to weaken throughout the day to a tropical storm.

Currently, Tropical Cyclone Cleo (03S), located approximately 480 nm southwest of Diego Garcia, has tracked west-northwestward at 9 knots over the past six hours. The low level circulation center remains fully exposed, and the remaining deep convection is nearly depleted.

Convection is not expected to rebuild over the center due to the continued effects of vertical wind shear and dry air. Intensity fixes concur that the system is 35 knots or less. Maximum significant wave height is 14 feet.