November 2016 Vietnam tropical depression

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Map key
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
Disc Plain black.svg Tropical cyclone
Solid black.svg Subtropical cyclone
ArrowUp.svg Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

On November 3, the JMA started to track a tropical depression with winds of 55 km/h (35 mph) that had just formed as an area of low pressure off the coast of Malaysia. [3] By November 4, the JTWC started to track the disturbance, as it was located about 343 km (185 nmi) east of Ho Chi Minh City, since the system had a rapidly consolidating center with flaring convection. At that time, the depression was located in an area of low to moderate wind shear, very warm sea-surface temperatures and good divergence aloft. [4]

Later that day, the JMA had analysed that the tropical depression had reached its maximum intensity with a minimum barometric pressure of 1004 hPa (29.65 inHg). [5] Just before November 5, the JTWC issued a Tropical Cyclone Formation Alert (TCFA), while located atop of warm waters with temperatures of approximately 29 °C (84.2 °F). [6] However, the next day, the JTWC cancelled their alert, as the system was weakening and nearing land, while increasing wind shear did not favor development. The depression made landfall over in Bình Thuận and Bà Rịa-Vũng Tàu in Southern Vietnam and continued moving westwards. [7] The JMA stopped monitoring on the system over land early on November 6. [8]

Impact

Satellite image of Mainland Southeast Asia and the remnants of the tropical depression on November 7 Vietnam Flooding TD 2016-11-07 0345Z.jpg
Satellite image of Mainland Southeast Asia and the remnants of the tropical depression on November 7

The flooding, escalated by the depression, started to occurred as early as October when the remnants of Tropical Storm Aere and Typhoon Sarika affected most of Vietnam. During October 15, it was reported that the low pressure triggered heavy rain with accumulations of about 300–900 mm (1–3 ft) recorded in coastal provinces with nine casualties. [2] About 27,000 homes were flooded within the region. As of October 16, 11 people have been killed, with seven of them from Quảng Bình Province. [9]

Almost immediately after formation, the depression, combined with the Northeast Monsoon, brought additional flooding to much of the nation. It was stated that the flooding at that time was caused by the system and cold air combined. [10] A total of 42,100 houses were destroyed [11] while 40,000 other dwellings in 12 provinces were inundated. Moreover, 12,000 hectares of crop were damaged; 40,000 cattle and poultry drowned. [10] On November 3, two people were missing while seven people were injured in Quảng Bình. The provinces of Hà Tĩnh, Quảng Bình and Quảng Trị alone had a total of 20,000 homes submerged underwater. About 485 families were therefore been evacuated in low-lying areas. Moreover, officials at six hydroelectric dams in those areas started discharging water to avoid dam breaches. [12] Reportedly, Phú Yên Province had the most damage of 337 billion (US$15.1 million). Floods, at that time, had washed away 250,000 cubic meters of soil on roads, while also damaging 15 bridges. Road damages were reported to be at ₫498 billion (US$22.3 million). The province of Phú Yên had also called for emergency aid of 1,000 tonnes of rice and over 1 tonne of medicines and medical supplies. [13]

After a week, Khánh Hòa Province have asked the government officials to provide ₫226 billion (US$10.1 million) in recovery funds while Phú Yên Province have requested ₫105 billion (US$4.71 million) for road repairs. As of November 9, a total of 15 people have been killed from the flooding since the beginning of November [11] with total damages up to ₫1.073 trillion (US$48.1 million). [1] In all, 50 people had died from both the depression and prior flooding in mid-October. [11]

See also

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References

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November 2016 Vietnam tropical depression
JMA TD 43 2016-11-04 0620Z.jpg
The tropical depression near the southern coast of Vietnam on November 4