Tropical Storm Sinlaku Intensifying As It Approaches Vietnam

Tropical Storm Sinlaku is intensifying as it approaches the coast of Vietnam.  At 7:00 p.m. EST on Friday the center of Tropical Storm Sinlaku was located at latitude 12.8°N and longitude 111.7°E which put it about 200 miles east-southeast of Quy Nonh and about 310 miles southeast of Da Nang, Vietnam.  Sinlaku was moving toward the west at 12 m.p.h.  The maximum sustained wind speed was 65 m.p.h. and there were gusts to 80 m.p.h.

As the forward motion of Sinlaku slowed, the wind shear decreased.  Warm Sea Surface Temperatures (SSTs) and well developed upper level outflow created an environment favorable for intensification and the inner core of the tropical storm became better organized.  A ring of convection is forming around the center of the circulation and there are some satellite indications that an eye may be forming.  Sinlaku will remain over warm SSTs as it moves toward Vietnam and further intensification is likely.  It is possible that Sinlaku could reach typhoon intensity before it makes landfall.

Sinlaku is being steered toward the west-northwest by a subtropical ridge to its north.  That steering pattern should remain in place and Sinlaku could make landfall in 12-18 hours.  It will bring strong winds to the coast of central Vietnam and it could produce locally heavy rainfall over parts of Southeast Asia as it moves inland.