Overall Red alert Tropical Cyclone for DOKSURI-17
in Viet Nam, Laos, Thailand

Impact

Tropical Cyclone DOKSURI-17 can have a high humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GDACS (JTWC)
Glide number: TC-2017-000131-VNM
Exposed countries Viet Nam, Laos, Thailand
Exposed population 1.8 million in Category 1 or higher
Maximum wind speed 176 km/h
Maximum storm surge 1.6 m (15 Sep 11:00 UTC)
Vulnerability High (Vietnam)

GDACS Score

GDACS alert score for Tropical Cyclones is 0.5 (GREEN Alert), 1.5 (ORANGE Alert), 2.5 (RED Alert)
For more info on GDACS alert score click here.
  Wind Storm surge Rainfall GDACS score
GDACS Current 176 km/h 1.6 m n.a. 2.5
GDACS Overall 176 km/h 1.6 m n.a. 2.5

Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

Wind

176 km/h Current

Up to 2 million people in Category 1 strength or higher (see SSHS)

Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm
Population in
Cat. 1 or higher
Countries
Green 1 11 Sep 2017 18:00 93 30 million No people Philippines, China
Green 2 12 Sep 2017 00:00 93 70.9 million No people China
Orange 3 12 Sep 2017 06:00 102 17.2 million No people China, Viet Nam
Orange 4 12 Sep 2017 12:00 111 34.6 million No people China, Viet Nam, Laos, Thailand, Myanmar
Orange 5 12 Sep 2017 18:00 120 38.9 million No people China, Viet Nam, Laos, Thailand, Myanmar
Orange 6 13 Sep 2017 00:00 148 28.1 million No people China, Viet Nam, Laos, Thailand, Myanmar
Red 7 13 Sep 2017 06:00 148 52.2 million 5.4 million China, Viet Nam, Laos
Red 8 13 Sep 2017 12:00 139 48.5 million 2.6 million Viet Nam, Laos
Red 9 13 Sep 2017 18:00 176 36.9 million 2.1 million Viet Nam, Laos

Bulletin Timeline

Alert Date (UTC) Category Max winds
(km/h)
Population in
Tropical Storm
Population in
Cat.1 or higher
Location (lat, lon) Countries
GREEN
1 11 Sep 2017 18:00 Tropical depression 46 no people no people 14.8, 122.8
GREEN
2 12 Sep 2017 00:00 Tropical depression 46 no people no people 14.6, 121.9 Philippines
GREEN
3 12 Sep 2017 06:00 Tropical depression 46 no people no people 14.3, 120 Philippines
GREEN
4 12 Sep 2017 12:00 Tropical depression 56 no people no people 14.5, 118.2
GREEN
5 12 Sep 2017 18:00 Tropical storm 65 no people no people 14.5, 117.6
GREEN
6 13 Sep 2017 00:00 Tropical storm 83 no people no people 14.6, 116.6
GREEN
7 13 Sep 2017 06:00 Tropical storm 83 no people no people 15.2, 115.9
GREEN
8 13 Sep 2017 12:00 Tropical storm 83 no people no people 15.6, 114.5
GREEN
9 13 Sep 2017 18:00 Tropical storm 111 no people no people 15.8, 113.4
ORANGE
9 14 Sep 2017 06:00 Category 1 130 10.5 million people no people 16.4, 111.3 Viet Nam
ORANGE
9 14 Sep 2017 18:00 Category 1 148 22.4 million people 530000 people 17.2, 109.2 Viet Nam
RED
9 15 Sep 2017 06:00 Category 2 176 29.2 million people 2 million people 17.9, 106.9 Viet Nam
ORANGE
9 15 Sep 2017 18:00 Tropical storm 83 25 million people no people 18.4, 105 Viet Nam
GREEN
9 16 Sep 2017 18:00 Tropical depression 37 no people no people 18.9, 102.2 Thailand
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.



Exposed population

Countries

Country Population Affected
Vietnam 1.9 million people
Laos 33000 people

Provinces

Region Province Country Population
Quang Binh Viet Nam 650000 people
Khammouan Laos <1000 people
Ha Tinh Viet Nam 1.2 million people
Nghe An Viet Nam 65000 people
Borikhamxai Laos 32000 people

Populated places

Name Region Province Country City class Population Distance
Dong Hoi Quang Binh Vietnam City 30000 people 746 km

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Ban Nape 762 0 927 km

Ports

Name LOCODE Country Distance
Dong Hoi VNDOH Vietnam 746 km
Yu Lin Vietnam 785 km

Rainfall

Rainfall accumulation of the past 24h, as detected by the Global Precipitation Measurement mission of NASA. For more information, see https://www.nasa.gov/mission_pages/GPM/main/index.html.

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StormSurge

1.6 m

The maximum Storm surge height is  1.6m in Con Soi, Vietnam. This height is estimated for 15 Sep 2017 06:00 UTC .

The JRC has developed an experimental global storm surge model, which is run after each advisory issued by the regional tropical cyclone centres. The calculations are published about 20 minutes after a new advisory is detected by GDACS. The calculations identify the populated places affected by storm surge up to three days in advance, using the forecasted track. When forecasts change, the associated storm surge changes too and alert levels may go up or down. All links, data, statistics and maps refer to the latest available calculation. If the calculation for the last advisory is not completed, the latest available calculation is shown.

Locations affected by Storm surge (304 locations). Calculation based on advisory number 13 of 14 Sep 2017 18:00:00 UTC. (Simulation using 0.5 minute resolution)

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