According to the provincial Steering Committee on Natural Disaster Prevention and Search and Rescue, rain scattered across eight out of the 14 areas in the localities, including six districts in the east and Cam Pha, Halong cities, on August 19 morning.
The rainfall was measured at about 100 mm.
Human and material losses have yet been confirmed, the committee said.
Earlier on August 18, authorities directed nearly 8,100 boats and 534 cruise ships to safety.
Fish breeding cages have been reinforced.
From August 18-19, the province set up teams to inspect the preparation for the tropical storm.
According to the provincial centre of hydro-meteorological forecasting, at 4:00 am on August 19, the tropical storm moved towards the mainland, about 180km off the Haiphong – Ninh Binh coast to the east.
In the next six hours, the storm was forecast to move westwards, with a speed of 15-20km per hour.
At 1:00 pm of the day, it is anticipated to hit coastal areas from Haiphong to Thanh Hoa province.
On August 19 morning, Deputy Prime Minister Vuong Dinh Hue directly inspected the preparation for the storm in Quang Yen commune.