Tropical Cyclone 13S (Gael) Forms in Indian Ocean
The area of convection in the Indian Ocean observed yesterday has strenghthened and become Tropical Cyclone 13S (Gael).
The system, located approximately 580 nautical miles east-northeast of La Reunion, has tracked west-southwestward at 11 knots over the past 6 hours.
It lies slightly equatorward of an upper-level ridge axis, in an area of moderate easterly vertical wind shear.
Recent animated multispectral satellite imagery shows a partially-exposed low level circulation center (LLCC) with deep convection confined to its western periphery.
Low to mid-level subtropical ridging to the south of Gael is expected to steer the system generally westward through the forecast period.
Persistent vertical wind shear will hold intensification to a slow rate over the next 12 to 24 hours.
Thereafter, vertical wind shear will decreased as 13S nears the upper-level ridge axis, allowing the cyclone to intensify more rapidly.
Maximum significant wave height is 13 feet.