Bắc Bộ ngày mai (3/12) trời chuyển rét | VTV24

Key Concepts

• Không khí lạnh (Cold air mass): A mass of air characterized by low temperatures.
• Di chuyển lệch đông (Eastward shift): Movement of a weather system towards the east, with a deviation from a direct eastward path.
• Ô nhiễm không khí (Air pollution): Contamination of the atmosphere by harmful substances.
• Rét đậm (Severe cold): A period of intensely cold weather.
• Hoàn lưu vùng áp thấp (Low-pressure system circulation): The atmospheric circulation around a low-pressure area.
• Nhiễu động trong đối gió đông (Disturbances in the easterly wind flow): Irregularities or fluctuations in the wind blowing from the east.
• Sạt lở (Landslide): The sliding down of a mass of earth or rock from a mountain or cliff.
• Nổ mìn (Blasting/Demolition by explosives): The use of explosives to break up and remove rock or debris.
• Thông tuyến (Reopening of a route): Making a road or railway line passable again.
• Mưa lũ (Rain and flood): Heavy rainfall leading to flooding.
• Tuyến đường sắt Bắc Nam (North-South railway line): The main railway connecting northern and southern Vietnam.
• Chạy chậm (Slow speed): Reduced speed of trains due to track conditions.
• Gia cố (Reinforcement): Strengthening of structures or infrastructure.
• Tốc độ khai thác (Operational speed): The speed at which a railway line can be safely operated.
• Đường cao tốc (Expressway/Highway): A major road designed for high-speed traffic.
• Dồn ứ/Ùn tắc (Congestion/Traffic jam): A situation where traffic is slowed or stopped due to excessive volume.
• Giờ cao điểm (Peak hours): Times of day when traffic volume is highest.
• Cửa ngõ phía đông Hà Nội (Eastern gateway of Hanoi): The eastern entry/exit points of Hanoi city.
• Lưu lượng giao thông (Traffic volume): The number of vehicles passing a certain point.
• Trạm thu phí (Toll station): A facility where tolls are collected from vehicles.
• Đường gom (Service road/Access road): Roads running parallel to a highway, providing local access.

Weather Forecast and Impact

1. Cold Air Mass Arrival and Temperature Drop:

• A cold air mass is approaching Vietnam, located approximately 200 km from the border as of the afternoon of the current day.
• It is predicted to affect Northern Vietnam (Bắc Bộ) by early morning of the next day.
• Due to its eastward-shifted movement, the cold air will bring light, scattered rain to Bắc Bộ.
• Northeasterly winds of force 2 to 4 will accompany the cold air, which is expected to improve air pollution conditions.
• Temperatures in Bắc Bộ and North Central Vietnam (Bắc Trung Bộ) will turn cold starting tomorrow.
• From tomorrow night onwards, the weather will become chilly (rét).
• The lowest temperatures during this cold spell are forecast to be generally between 14°C and 18°C.
• In the northern mountainous regions, temperatures will range from 13°C to 15°C, with some areas potentially dropping below 12°C, indicating localized severe cold (rét đậm cục bộ).

2. Heavy Rain in Central Vietnam:

• An intensified cold air mass, combined with the weakening circulation of a low-pressure system from Typhoon No. 15 and upper-level disturbances in the easterly wind flow, will cause heavy rain.
• From tonight until the night of December 4th, areas from Quảng Trị to Đà Nẵng, and the eastern parts of Quảng Ngãi, Đắk Lắc, and Khánh Hòa will experience moderate to heavy widespread rain.

Infrastructure and Transportation Disruptions

1. Khánh Lê Pass Landslide Clearance:

• The most complex landslide point at km 44 on Khánh Lê Pass, National Highway 27C, has been cleared using controlled blasting.
• This operation was supported by the military forces of Military Region 5.
• After five blasting sessions, the severe and complex landslide point was largely resolved.
• Previously, 13 large rocks had slid down, completely blocking National Highway 27C for several days.
• Following the removal of soil and rocks at km 44+400, construction units were able to deploy equipment and personnel for blasting and clearing the remaining seven landslide points further back.
• Clearing this critical point is decisive for completing the clearance of all other landslide sites.
• The goal is to reopen traffic on Khánh Lê Pass before December 10th.

2. Railway Service Suspensions:

• Several SE train services will be temporarily suspended from today until December 10th due to ongoing damage from recent rain and floods.
• Specifically, trains SE6 and SE5 (departing from Saigon and Hanoi stations, respectively) and SE22 and SE21 (departing from Saigon and Đà Nẵng stations, respectively) are affected.
• Although the North-South railway line was repaired and reopened on November 25th after an 8-day blockage, many sections still require slow speed operations and reinforcement to ensure safe operational speeds.
• As of now, the railway sector has had to suspend 105 passenger trains and 65 freight trains.

3. Hanoi-Hai Phong Expressway Congestion:

• An 8 km stretch of the Hanoi-Hai Phong Expressway experiences traffic congestion and slow movement during peak hours.
• When including the Cổ Linh road in Hanoi that connects to this expressway, a 10 km section in the eastern gateway of Hanoi is facing increasing pressure from rapidly growing traffic volume.
• Authorities on the Hanoi-Hai Phong Expressway report significant traffic pressure, especially on weekends and holidays, as vehicles from the city center surge onto the expressway, causing congestion.
• Statistics from the expressway management indicate an average of approximately 50,000 vehicle movements per day on weekends and holidays.
• An additional 30% of vehicles are estimated to exit the expressway at nearby residential areas before reaching the toll stations.
• The Hanoi-Hai Phong Expressway experiences an annual vehicle growth rate of about 10% to 15%.
• Short-term solutions implemented by authorities include traffic diversion and direct traffic control to prevent vehicles from entering the expressway when it is overloaded from the city.
• Long-term solutions proposed include investing in widening the expressway in the areas connecting to the city gateway and enhancing the role of service roads (đường gom) to divert traffic and reduce congestion in this critical gateway area.

Synthesis/Conclusion

The transcript details several critical issues facing Vietnam. Firstly, an impending cold front is expected to bring cooler temperatures and improved air quality to Northern Vietnam, while also causing heavy rain in central regions. Secondly, significant infrastructure challenges are being addressed, including the complex clearance of landslides on Khánh Lê Pass using controlled blasting, with a deadline to reopen the route by December 10th. Concurrently, the railway network is still recovering from recent floods, leading to train service suspensions and ongoing repairs on the North-South line. Finally, the eastern gateway of Hanoi, particularly the Hanoi-Hai Phong Expressway, is grappling with severe traffic congestion due to rapid vehicle growth, necessitating both immediate traffic management and long-term infrastructure expansion plans.