Due to the impact of Ragasa, heavy to very heavy rain and thunderstorms are forecast in Hanoi from the morning of September 25 through September 26. In response, Chairman of the Hanoi People’s Committee Tran Sy Thanh has issued Directive No. 14/CD-UBND, urging heads of departments, agencies, and district authorities to take proactive measures against the approaching super typhoon and related disasters such as flash floods, landslides, and urban inundation.

Chairman Tran Sy Thanh called on all relevant agencies and local authorities to stay updated on weather developments, anticipate worst-case scenarios, and prioritize safeguarding human life above all.

District and commune-level People's Committees are instructed to focus on ensuring public safety - especially for the elderly, children, students, and vulnerable populations - while securing homes, warehouses, offices, schools, hospitals, dykes, dams, and other infrastructure. Business and agricultural operations must also be protected.

They are also required to review and prepare evacuation plans in advance of the typhoon’s landfall, be ready to implement rescue operations if needed, manage traffic, limit movement during the storm and pre-storm thunderstorms, and ensure road clearance with sufficient manpower, equipment, and materials in the event of severe rainfall.

According to the National Center for Hydro-Meteorological Forecasting and the Northern Regional Hydrometeorological Station, from September 25 to 26, Hanoi is expected to receive moderate to heavy rainfall, with some areas experiencing very heavy downpours and storms.

In the northern part of Hanoi, total rainfall is expected to range from 70 to 130 mm, with some areas exceeding 200 mm. Central, southern, and western parts of the city may receive 80 to 150 mm of rain, possibly more than 250 mm in some locations. On September 25, wind speeds are expected to gradually increase to levels 4–5 (28–38 km/h).

N. Huyen