Overall Orange alert Tropical Cyclone for KOMPASU-21
in Viet Nam, Laos, China, Philippines
12 Oct 2021 18 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

Tropical Cyclone KOMPASU-21 can have a medium humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GFS
Exposed countries Hong Kong, China, Vietnam, Paracel Islands
Exposed population No people in Category 1 or higher
Maximum wind speed 101 km/h
Maximum storm surge 2.5 m (13 Oct 08:00 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
GFS Current 101 km/h 2.5 m 150 mm 0.5
GFS Overall 119 km/h 2.4 m 688 mm 0.5

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

TOP

Wind

119 km/h

Up to 7.8 million can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 12 Oct 2021 18:00 UTC
CategoryCountryPopulation 
Tropical StormHong Kong, China, Vietnam, Paracel Islands7,802,412
+
Hong Kong1,809 
China7,793,225 
Vietnam6,921 
Paracel Islands455 

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 10 Oct 2021 06:00 97 -
- - - - - Taiwan
GREEN 2 10 Oct 2021 12:00 104 -
- - - - - Taiwan, Philippines
GREEN 3 10 Oct 2021 18:00 119 -
- - - - - China, Taiwan, Japan, Philippines
GREEN 4 11 Oct 2021 00:00 101 -
- - - - - Taiwan, China, Japan, Philippines
GREEN 5 11 Oct 2021 06:00 97 -
- - - - - China, Taiwan, Japan, Philippines
GREEN 6 11 Oct 2021 12:00 101 -
- - - - - Taiwan, China, Japan, Philippines
GREEN 7 11 Oct 2021 18:00 101 -
- - - - - China, Taiwan, Philippines
GREEN 8 12 Oct 2021 00:00 108 -
- - - - - China, Taiwan, Philippines
GREEN 9 12 Oct 2021 06:00 97 -
- - - - - Taiwan, China, Philippines
GREEN 10 12 Oct 2021 12:00 97 -
- - - - - China, Taiwan, Hong Kong, Paracel Islands
GREEN 11 12 Oct 2021 18:00 108 -
- - - - - Hong Kong, China, Vietnam, Paracel Islands
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 12 Oct 2021 18:00 UTC
LevelCountryPopulation 
250-500 mmChina, Taiwan, Thailand, Myanmar3,612,139
+
China3,479,995 
Myanmar128,320 
Taiwan1,908 
Thailand1,916 
100-250 mmChina, Taiwan, Vietnam, Philippines, Laos, Thailand, Paracel Islands, Myanmar, Cambodia26,046,338
+
China13,680,576 
Myanmar1,102,725 
Taiwan289,977 
Vietnam6,749,051 
Philippines2,495 
Laos156,015 
Thailand3,637,223 
Paracel Islands285 
Cambodia427,987 
50-100 mmChina, Myanmar, India, Taiwan, Vietnam, Hong Kong, Macao, Philippines, Laos, Thailand, Paracel Islands, Cambodia89,242,421
+
China21,850,126 
Myanmar5,061,465 
India391,150 
Taiwan2,119,588 
Vietnam15,259,655 
Hong Kong333,765 
Macao579,652 
Philippines14,098,248 
Laos2,092,145 
Thailand24,223,595 
Paracel Islands51 
Cambodia3,232,976 

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 10 Oct 2021 06:00 92 -
- - - - - Vietnam, China
Blue 2 10 Oct 2021 12:00 134 -
- - - - - Vietnam
Blue 3 10 Oct 2021 18:00 156 270 thousand
- - - - China, Vietnam, Philippines, Laos
Blue 4 11 Oct 2021 00:00 138 430 thousand
- - - - Taiwan, Vietnam, Philippines, Laos
Blue 5 11 Oct 2021 06:00 198 1.6 million
- - - - Taiwan, Vietnam, Philippines
Blue 6 11 Oct 2021 12:00 262 1.7 million
- - - Taiwan, Philippines, Thailand, Laos
Blue 7 11 Oct 2021 18:00 157 1.2 million
- - - - Taiwan, Philippines
Blue 8 12 Oct 2021 00:00 256 360 thousand
- - - Philippines, Thailand, Cambodia, Myanmar
Blue 9 12 Oct 2021 06:00 151 80 thousand
- - - - China
Blue 10 12 Oct 2021 12:00 136 3 thousand
- - - - China, Philippines
Blue 11 12 Oct 2021 18:00 400 29.7 million
- - - China, Myanmar, India, Taiwan, Vietnam, Hong Kong, Macao, Philippines, Laos, Thailand, Paracel Islands, Cambodia




Impact estimation for the next 72h
TOP

StormSurge

The calculations have been performed using NAMIDANCE computer code, from Middle East Technical University.
reference: Zaytsev, Andrey; Kurkin, Andrey; Pelinovsky, Efim; Yalciner, Ahmet C. - NUMERICAL TSUNAMI MODEL NAMI-DANCE. - Science of Tsunami Hazards . Nov2019, Vol. 38 Issue 4, p151-168. 18p.
Doaj

2.5 m

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 12 Oct 2021 18:00 UTC