HANOI, Aug. 19 (Xinhua) — Typhoon Dianmu has weakened into a tropical depression after making landfall in northern Vietnam Friday afternoon, according to the country's National Center for Hydro-meteorological Forecasting.

The Hanoi Department of Agriculture and Rural Development said three people injured when the typhoon hit Hanoi. Meanwhile, roofs of 11 houses were blown away and around 100 trees in the capital city were uprooted, Vietnam's state-run news agency reported.

In the northern Quang Ninh province, 11 houses collapsed, 11 electricity poles and thousands of trees fell down, while more than 50 hectare of rice and vegetables were inundated, according to initial estimates.

Earlier, nearly 2,000 households with more than 4,700 people in Quang Ninh were evacuated.

The tropical depression is moving west-northwestward at a speed of 20-25 km per hour and continues bringing torrential rains to northern Vietnam. Floods and landslides have been warned.