Aside from strong winds, Matmo is expected to bring heavy to extremely heavy rainfall, with widespread totals ranging from 150–250mm, and isolated areas possibly exceeding 350mm, particularly in the northern mountainous and midland regions. The period of heaviest rain is forecast to last from early October 6 through the night of October 7.

Due to the heavy rainfall, a flood event is likely to occur from October 6 to 9 across rivers in the Northern region and Thanh Hoa province. Water levels may rise 4–8 meters in the upper reaches and 2–5 meters in the lower reaches of major rivers.

Flood peaks on rivers in Quang Ninh, Lang Son, Cao Bang, Lao Cai, Ninh Binh, Tuyen Quang. as well as in Thai Nguyen, Bac Ninh, and Hai Phong, are anticipated to rise to alert levels II and III. Rising river levels combined with intense rainfall may cause flooding and isolation in low-lying areas across Northern Vietnam that are still recovering from the impacts of the previous storm.

This new round of heavy rain comes on the heels of the downpours caused by Typhoon Bualoi, which already saturated the soil in the region. Meteorologists warned about a high risk of flashfloods and landslides that are extremely dangerous due to their sudden and unpredictable nature.

On October 5, ahead of Typhoon Matmo's expected landfall, Quang Ninh and Hai Phong activated storm preparedness measures, evacuating thousands of boats and workers, reinforcing infrastructure, and advising early harvests in vulnerable areas.

In Quang Ninh, key actions included securing over 1,000 vessels, reinforcing dikes and fish farms, and preparing to evacuate tourists, while Hai Phong mobilised resources to monitor flood risks, inspect critical infrastructure, and safeguard nearly 6,500 households in aging buildings.

On Bach Long Vi Island, 124 vessels were sheltered, emergency supplies were stockpiled, and both localities deployed round-the-clock response teams with five forward command posts.

Although the capital city of Hanoi is forecast to be minimally affected by Typhoon Matmo, heavy rainfall may still cause localised flooding in both urban and suburban areas. Learning from the impacts of Typhoon Bualoi just a week earlier, the city has encouraged employees to work from home and students to attend online classes to ensure safety.

Typhoon Matmo heads toward the coast of Quang Ninh tonight

VOV.VN - Typhoon Matmo is heading for the northern coast of Quang Ninh province on the night of October 5 and is expected to bring strong winds and heavy rain to northern Vietnam.