Tropical Cyclone Felleng (13S) Off Coast of Madagascar – February 1st, 201316.6S 53.4E
Tropical Cyclone Felleng (13S), located approximately 295 nm west-northwest of La Reunion, has tracked south-southwestward at 10 knots over the past six hours. Here, it can be seen off the coast of Madagascar. Thanks to the use of the Chelys Satellite Rapid Response System (SRRS) “borders” feature (best observed in full image), the country’s coastline is clearly visible despite the convection covering parts of it.
Animated infrared satellite imagery indicates that TC 13S has continued to weaken over the past six hours due to moderate to strong (20 to 30 knots), westerly vertical wind shear (VWS). An SSMIS image indicates that the system has become tilted with the low-level circulation center positioned on the western edge of the deep convection, which is sheared primarily over the eastern semi-circle.
The initial position is based, with good confidence, on the SSMIS 37 ghz image, which shows a microwave eye feature. The initial intensity is assessed at 70 knots based on an average of Dvorak current intensity estimates ranging from 65 to 77 knots. Maximum significant wave height is 30 feet.