Tropical Depression 20W has formed in the South China Sea (SCS), just west of the Philippines. The depression has winds of 30kts. There is some weak banding south of the LLCC, but convection is lacking directly over the centre at present. Shear is low, and waters are warm along track, so strengthening is expected. Ridging to the north is expected to guide 20W generally west over the next few days, and 20W is expected to make landfall in Vietnam near the city of Hue. Exact landfall location is subject to change, but Vietnam need to be wary of this one, as it may have time to strengthen into a typhoon prior to landfall.