Hoàn lưu sau bão số 12 khiến Hà Tĩnh - Quảng Ngãi mưa lớn 2 ngày tới | VTV24

Key Concepts:

• Áp thấp nhiệt đới (Tropical depression)
• Bão số 12 (Storm number 12)
• Hoàn lưu (Circulation)
• Gió đông (Easterly wind)
• Không khí lạnh (Cold air)
• Địa hình đón gió (Windward terrain)
• Dãy Trường Sơn (Truong Son mountain range)
• Mưa to, kéo dài (Heavy, prolonged rain)
• Trung Trung Bộ (Central Central Vietnam)
• Quảng Trị, Huế, Đà Nẵng (Provinces/Cities in Central Vietnam)
• Lượng mưa (Rainfall amount)
• Sạt lở đất (Landslide)
• Lũ quét (Flash flood)
• Sông Kiến Giang, Sông Thạch Hãn, Sông Bồ, Sông Hương, Sông Vu Gia, Sông Thu Bồn, Sông Vệ, Sông Danh, Sông Trà Khúc (Rivers in Central Vietnam)
• Báo động ba (Level 3 alert)
• Ngập lụt (Flooding)

Summary of Storm Information and Rainfall Forecast

1. Current Status of Tropical Depression (Storm No. 12)

• As of 4:00 AM this morning, the center of the tropical depression was located approximately 80 km east-northeast of Da Nang city.
• Forecast: The tropical depression is predicted to weaken rapidly as it approaches the coast. By this afternoon, it is expected to downgrade to a low-pressure area.
• Wind Conditions: Strong winds, with speeds of up to level 7 and gusts of level 8 to 9, are expected to persist this morning in specific locations such as Con Co, Ly Son, and Cu Lao Cham island. These winds will be accompanied by rough seas.

2. New Tropical Depression Approaching the East Sea

• A new tropical depression has formed east of Taiwan, China.
• Forecast: This new tropical depression is projected to move south-southwest and enter the East Sea.

3. Impact of Combined Weather Systems on Central Vietnam

• Despite Storm No. 12 weakening into a tropical depression, its circulation, in combination with easterly winds, cold air, and the windward terrain of the Truong Son mountain range, is expected to cause heavy and prolonged rainfall in Central Vietnam.
• Rainfall Observations (Last Night):
  • Rain and thunderstorms began in the Central Central Vietnam region overnight.
  • Some areas in Quang Tri, Hue city, and Da Nang city experienced moderate to heavy rainfall.
  • Rainfall amounts from 7:00 PM last night to 4:00 AM this morning ranged from 127 mm to 191 mm in these locations.

4. Rainfall Forecast for Today and Tomorrow

• Today: Heavy rainfall is expected to increase and become more continuous in the region from Ha Tinh to Quang Ngai.
• Rainfall Amounts (From now until the end of tomorrow):
  • Southern Quang Tri, Hue city, and Da Nang city: Rainfall is forecast to be between 200 mm and 400 mm, with some areas potentially exceeding this.
  • Other areas (Ha Tinh, Northern Quang Tri, and Quang Ngai): Rainfall is expected to be around 100 mm to 200 mm, with some areas exceeding 300 mm.
• Risk Assessment: There is a high risk of landslides and flash floods due to the anticipated heavy rainfall.

5. River Flood Warnings

• Due to the heavy rainfall, several rivers in Central Vietnam are expected to experience flooding:
  • Kien Giang River, Thach Han River (Quang Tri); Bo River, Huong River (Hue city); Vu Gia River, Thu Bon River (Da Nang city); Ve River (Quang Ngai): These rivers may rise to Level 3 alert or above.
  • Danh River (Quang Tri); Tra Khuc River (Quang Ngai): These rivers are expected to rise to Level 2 to Level 3 alert and pose a risk of flooding.

Conclusion:

The tropical depression, formerly Storm No. 12, is weakening but its remnants, combined with other weather systems, will bring significant rainfall to Central Vietnam. A new tropical depression is also approaching the East Sea. The forecast indicates a high risk of landslides, flash floods, and river flooding in the affected regions, necessitating preparedness and vigilance.