Overall Green alert Tropical Cyclone for HIGOS-20
in China
17 Aug 2020 18 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

Tropical Cyclone HIGOS-20 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source HWRF
Exposed countries China, Hong Kong, Macau
Exposed population No people in Category 1 or higher
Maximum wind speed 72 km/h
Maximum storm surge 0.1 m (17 Aug 22:45 UTC)
Vulnerability Medium (China)

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
HWRF Current 72 km/h 0.1 m 126 mm 0.5
HWRF Overall 133 km/h 1.4 m 356 mm 0.5

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

TOP

Wind

133 km/h

Up to 10.8 million can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 17 Aug 2020 18:00 UTC
CategoryCountryPopulation 
Tropical StormChina, Hong Kong, Macau10,812,361
+
China8,023,269 
Hong Kong2,201,178 
Macau587,914 

See TC classification SSHS


Wind Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert N° Date (UTC) Max Winds (km/h) Pop in Cat. 1 or higher TS Cat. 1 Cat. 2 Cat. 3 Cat. 4 Cat. 5 Countries
GREEN 1 17 Aug 2020 18:00 115 -
- - - - - China, Hong Kong, Macau
Download:





Impact estimation for the next 72h
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Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 17 Aug 2020 18:00 UTC
LevelCountryPopulation 
250-500 mmChina, Hong Kong, Vietnam2,517,573
+
China225,877 
Vietnam53 
Hong Kong2,291,643 
100-250 mmChina, Vietnam, Hong Kong, Macau34,329,949
+
China28,878,672 
Vietnam42,320 
Hong Kong4,821,043 
Macau587,914 
50-100 mmChina, Vietnam, Hong Kong55,089,470
+
China54,950,872 
Vietnam138,596 
Hong Kong02 

Rain Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert N° Date (UTC) Max Rainfall (mm) Pop >100mm or higher 50-100 100-250 250-500 500-750 750-1000 >1000 Countries
Blue 1 17 Aug 2020 18:00 393 36.8 million
- - - China, Vietnam, Hong Kong, Macau




Impact estimation for the next 72h
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StormSurge

0.1 m

The maximum Storm surge height is  0.1m in Shantou, China. This height is estimated for 17 Aug 2020 22:45 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.

Storm Surge Exposed population - AoIs


Storm Surge Exposed locations

Calculation based on the bulletin of 17 Aug 2020 18:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
17 Aug 2020 22:45 Shantou China  0.1
17 Aug 2020 22:45 Dahao China  0.1
17 Aug 2020 22:45 Aotou China  0.1
17 Aug 2020 22:45 Daitou China  0.1
17 Aug 2020 22:45 Guangao China  0.1
17 Aug 2020 22:45 Siwei China  0.1
17 Aug 2020 22:00 Duc Pho Vietnam  0.1
17 Aug 2020 22:00 An Lac Vietnam  0.1
18 Aug 2020 00:00 Hai Phong Vietnam  0.1
18 Aug 2020 00:00 Thuy U Vietnam  0.1
18 Aug 2020 00:00 Dai Loc Vietnam  0.1
18 Aug 2020 00:00 Quang Yen Vietnam  0.1
18 Aug 2020 00:00 Hoang Chau Vietnam  0.1
18 Aug 2020 00:00 Qiandong China  0.1
18 Aug 2020 00:00 Jingzhou China  0.1
18 Aug 2020 00:00 Huanglong China  0.1
18 Aug 2020 00:00 Houzhai China  0.1
18 Aug 2020 00:00 Raoping China  0.1
18 Aug 2020 00:00 Zhelin China  0.1
18 Aug 2020 00:00 Shenao China  0.1
18 Aug 2020 00:00 Nanao China  0.1
18 Aug 2020 00:00 Chelim China  0.1