Tropical Storm Haitang has now begun to move northwestward over the South China Sea, 300km southeast of Hainan or about 450km east northeast of Da Nang, Vietnam. Haitang is moving at a speed of 10kph. Maximum sustained winds remain at 65kph gusting to 90kph.
A look at the VIS image shows the partially exposed center with the main convective activity displaced to the west. Haitang is forecast to remain as a weak tropical storm throughout its lifetime due to somewhat unfavorable conditions.
VIS Image from NRLMRY
TS Haitang will continue moving northwestward, passing south of Hainan tomorrow. We are forecast a landfall in Vietnam, around 400km south of Hanoi, by Tuesday afternoon (Vietnam time). Haitang will then rapidly weaken to a tropical depression as it moves into Laos. Primary threats will be heavy rain which could total more than 200mm.
Personal Forecast (NOT OFFICIAL)
We'll have another update tomorrow.
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Issued (09 UTC) 5pm PhT 092511
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