Experts warn of the risk of insecurity of small and medium-sized irrigation reservoirs due to the impact of storm No. 13.

Mr. Mai Van Khiem, Director of the National Center for Hydro-Meteorological Forecasting, said that for river basins in Quang Ngai, Gia Lai and Dak Lak provinces, flood levels could reach alert level II, alert level III, and in some places could exceed alert level III. In addition, it is necessary to pay close attention and guard against the risk of insecurity at medium and small irrigation reservoirs in these areas.

Mr. Mai Van Khiem, Director of the National Center for Hydro-Meteorological Forecasting, shared with reporters:

Sharing with reporters on the afternoon of November 6, Mr. Mai Van Khiem, Director of the National Center for Hydro-Meteorological Forecasting, said that up to now, the storm has a final intensity of level 13, the beginning of level 14, which means it has decreased by nearly two levels compared to the strongest time in the early afternoon of November 6.

With forecasts of very heavy rain, Mr. Khiem assessed that the flood situation in the two areas of Hue - Da Nang , which just experienced historic floods, and the area from Quang Ngai to Dak Lak will continue.

“With heavy rain from this morning until now and continuing into the night of November 6 and November 7, a flood may appear in river areas. In the river basins in Hue and Da Nang cities, floods may rise but are likely not as severe as the last one,” said Mr. Mai Van Khiem.

For river basins in Quang Ngai, Gia Lai and Dak Lak provinces, Mr. Khiem noted that flood levels could reach alert level II, alert level III, and in some places could exceed alert level III. In addition, with heavy rainfall in the past and in the coming days, Mr. Khiem emphasized the need to pay close attention and guard against the risk of insecurity at medium and small irrigation reservoirs in these areas.

According to the forecast of the National Center for Hydro-Meteorological Forecasting, by 10 p.m. on November 6, the storm will move in the West-Northwest direction, at a speed of about 30 km/h, gradually weakening, reaching level 10, gusting to level 12. The disaster risk level is level 4, the affected area is the sea from Quang Ngai to Dak Lak (including Ly Son special zone); the mainland in the East of the area from Quang Ngai to Gia Lai, the North of Dak Lak. The disaster risk level is level 3 in the West of the central East Sea, the sea from South Quang Tri to Da Nang City (including Cu Lao Cham Island) and Khanh Hoa; the mainland in South Quang Tri to Da Nang City, the South of Dak Lak province and the North of Khanh Hoa province.

At 4:00 a.m. on November 7, the storm moved in the West-Northwest direction, at a speed of about 30 km/h, gradually weakening into a tropical depression, a strong storm of level 7, gusting to level 9. Disaster risk level 3 in the sea area from South Quang Tri to Da Nang City (including Ly Son special zone, Cu Lao Cham island) and Khanh Hoa; mainland from South Quang Tri to Da Nang City, South Dak Lak province and North Khanh Hoa province.

Forecast, at 4:00 p.m. on November 7, the storm will move in the West Northwest direction, at a speed of 25 - 30 km/hour, located at 15.6N - 104.1E; in the eastern region of Thailand. Weakening into a low pressure area, storm intensity below level 6.

Due to the influence of the storm, the sea area west of the central East Sea has winds of level 8 - 10, near the storm center level 11 - 12, gusting to level 14; waves 5 - 7m high, near the storm center 8 - 10m, rough seas.

Coastal areas from South Da Nang to Dak Lak (including Ly Son special zone, Cu Lao Cham island) wind level 8 - 11, waves 4 - 7m high; areas near the storm center level 12 - 14, gust level 17; waves 8 - 10m high, rough seas. Coastal areas from South Quang Tri to North Da Nang and Khanh Hoa wind level 6 - 8, waves 3 - 5m high, rough seas.

Coastal areas from South Quang Tri to Dak Lak: Water level rises 0.5 - 1.0m. Highest sea level at Thuan An (1m), Son Tra (1.2m), Hoi An (1.3m), Dung Quat (1.5m), Quy Nhon (1.2m), Tuy Hoa (1.1m). Warning of flooding, waves overtopping dikes, coastal erosion, affecting low-lying areas and aquaculture.

On land, the area from South Da Nang to Dak Lak has strong winds of level 6 - 9, the area near the storm center has levels 10 - 12, gusting to level 15 (focusing on the East of Quang Ngai - Gia Lai, the North of Dak Lak). The area from South Quang Tri to North Da Nang and the North of Khanh Hoa has winds of level 6 - 7, gusting to level 8 - 9. The strongest winds are from the evening to the night of November 6. The area from West Quang Ngai to Gia Lai has winds of level 6 - 7, the area near the storm center has levels 8 - 9, gusting to level 11.

From the evening of November 6 to November 7, the area from Da Nang to Dak Lak will have rainfall of 150 - 300mm, locally over 500mm. From South Quang Tri to Hue, Khanh Hoa, Lam Dong, it will be from 100 - 250mm, locally over 400mm.

On November 7-8, Thanh Hoa to Northern Quang Tri will see rainfall of 50-150mm, locally over 200mm. Warning of heavy rain over 200mm/3 hours. Risk of thunderstorms, tornadoes, and strong gusts of wind before and during the storm's landing.

Source: https://baotintuc.vn/xa-hoi/chuyen-gia-canh-bao-nguy-co-mat-an-toan-ho-chua-thuy-loi-vua-va-nho-do-anh-huong-cua-bao-so-13-20251106200939313.htm