Overall Red alert Tropical Cyclone for CHANTHU-21
in China, Philippines
12 Sep 2021 00 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

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

Meteorological source GFS
Exposed countries Russia, Japan, China, South Korea, Taiwan, Philippines
Exposed population No people in Category 1 or higher
Maximum wind speed 158 km/h
Maximum storm surge 0.7 m (12 Sep 06:00 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
GFS Current 158 km/h 0.7 m 251 mm 0.5
GFS Overall 252 km/h 1.9 m 709 mm 1.5

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

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Wind



Wind exposed population - AoIs

Estimations based on the bulletin of 12 Sep 2021 00:00 UTC
CategoryCountryPopulation 
Tropical StormRussia, Japan, China, South Korea, Taiwan, Philippines14,838,320
+
Russia11,681 
Japan124,290 
China13,422,944 
South Korea15,378 
Taiwan1,252,350 
Philippines11,674 

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 06 Sep 2021 06:00 68 -
- - - - - China
GREEN 2 06 Sep 2021 12:00 83 -
- - - - - China, North Korea
GREEN 3 06 Sep 2021 18:00 83 -
- - - - - China, Philippines
GREEN 4 07 Sep 2021 00:00 97 -
- - - - - Philippines
GREEN 5 07 Sep 2021 06:00 133 -
- - - - - Philippines
GREEN 6 07 Sep 2021 12:00 140 -
- - - - - Philippines
GREEN 7 07 Sep 2021 18:00 166 -
- - - - - Philippines
GREEN 8 08 Sep 2021 00:00 173 -
- - - - - Philippines
GREEN 9 08 Sep 2021 06:00 187 -
- - - - - Philippines
GREEN 10 08 Sep 2021 12:00 202 -
- - - - - Philippines
GREEN 11 08 Sep 2021 18:00 252 -
- - - - - Philippines
GREEN 12 09 Sep 2021 00:00 227 - - - - - - -
GREEN 13 09 Sep 2021 06:00 216 - - - - - - -
GREEN 14 09 Sep 2021 12:00 205 - - - - - - -
GREEN 15 09 Sep 2021 18:00 194 -
- - - - - Paracel Islands
GREEN 16 10 Sep 2021 00:00 212 -
- - - - - Paracel Islands
GREEN 17 10 Sep 2021 06:00 205 - - - - - - -
GREEN 18 10 Sep 2021 12:00 194 1 thousand
- - - - Philippines
GREEN 19 10 Sep 2021 18:00 216 3 thousand
- - - Philippines, Paracel Islands
GREEN 20 11 Sep 2021 00:00 198 20 thousand
- - - Taiwan, Philippines
GREEN 21 11 Sep 2021 06:00 223 6 thousand
- Taiwan, Philippines
GREEN 22 11 Sep 2021 12:00 198 2 thousand
- - - - Taiwan, Philippines
GREEN 23 11 Sep 2021 18:00 169 -
- - - - - Japan, Taiwan, Philippines
GREEN 24 12 Sep 2021 00:00 158 -
- - - - - Russia, Japan, China, South Korea, Taiwan, Philippines
Download:





Impact estimation for the next 72h
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Rainfall

709 mm

Up to 86.9 million can be affected by rain higher than 100mm (see SSHS)





Rain exposed population - AoIs

Estimations based on the bulletin of 12 Sep 2021 00:00 UTC
LevelCountryPopulation 
250-500 mmSouth Korea, China14,997,903
+
South Korea4,216 
China14,993,687 
100-250 mmSouth Korea, Japan, China, Taiwan71,941,738
+
South Korea863,284 
Japan4,654,893 
China65,836,376 
Taiwan587,184 
50-100 mmSouth Korea, Japan, China, Taiwan, Philippines43,918,867
+
South Korea1,793,578 
Japan9,651,750 
China20,598,942 
Taiwan11,845,099 
Philippines29,496 

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 06 Sep 2021 06:00 164 -
- - - - - China
Blue 2 06 Sep 2021 12:00 126 -
- - - - - Philippines
Blue 3 06 Sep 2021 18:00 118 90 thousand
- - - - North Korea, Philippines
Blue 4 07 Sep 2021 00:00 107 10 thousand
- - - - North Korea, South Korea, Philippines
Blue 5 07 Sep 2021 06:00 132 60 thousand
- - - - Philippines
Blue 6 07 Sep 2021 12:00 186 130 thousand
- - - - Philippines
Blue 7 07 Sep 2021 18:00 230 430 thousand
- - - - Japan, Philippines
Blue 8 08 Sep 2021 00:00 216 2.2 million
- - - - Japan, Philippines
Blue 9 08 Sep 2021 06:00 227 8.8 million
- - - - Philippines
Blue 10 08 Sep 2021 12:00 215 -
- - - - - Philippines
Blue 11 08 Sep 2021 18:00 241 -
- - - - - Japan
Blue 12 09 Sep 2021 00:00 218 -
- - - - - Japan
Blue 13 09 Sep 2021 06:00 202 -
- - - - - China
Blue 14 09 Sep 2021 12:00 167 -
- - - - - Philippines
Blue 15 09 Sep 2021 18:00 179 -
- - - - - Philippines
Blue 16 10 Sep 2021 00:00 206 -
- - - - - Paracel Islands, Philippines
Blue 17 10 Sep 2021 06:00 240 - - - - - - -
Blue 18 10 Sep 2021 12:00 197 8 thousand
- - - - Philippines
Blue 19 10 Sep 2021 18:00 297 1 thousand
- - - - Philippines
Blue 20 11 Sep 2021 00:00 178 10 thousand
- - - - Philippines
Blue 21 11 Sep 2021 06:00 378 3 thousand
- - - - Taiwan, Philippines
Blue 22 11 Sep 2021 12:00 230 2 thousand
- - - - Taiwan, Philippines
Blue 23 11 Sep 2021 18:00 221 3 thousand
- - - - Japan, Philippines
Blue 24 12 Sep 2021 00:00 403 86.9 million
- - - South Korea, Japan, China, Taiwan, Philippines




Impact estimation for the next 72h
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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

0.7 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 Sep 2021 00:00 UTC