Overall Red alert Tropical Cyclone for CHANTHU-21
in China, Philippines
08 Sep 2021 06 UTC
click on to select bulletin time
  • GDACS JTWC
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 GDACS
    Glide number: TC-2021-000140-PHL
    Exposed countries China, Philippines
    Exposed population 5 million in Category 1 or higher
    Maximum wind speed 287 km/h
    Maximum storm surge 0.6 m (10 Sep 16:00 UTC)
    Vulnerability Medium (China)
    Landfall between
    12 Sep 2021 06:00 - 13 Sep 2021 06:00
    in 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
    Current 241 km/h 0.6 m n.a. 1.5
    Overall 287 km/h 0.6 m n.a. 1.5

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

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    Wind

      241 km/h Current Max.

      Up to 3.3 million people in Category 1 strength or higher (see SSHS)

      Impact Timeline

        Alert N° Date (UTC) Max Winds (km/h) Population in
        Tropical Storm or higher        		 Population in
        Cat 1. or higher        		 Countries
        Green 1 06 Sep 2021 06:00 176 1.2 million No people Japan, China
        Green 2 06 Sep 2021 12:00 176 670 thousand No people Japan, China
        Orange 3 06 Sep 2021 18:00 194 8.7 million 1.7 million China
        Orange 4 07 Sep 2021 00:00 194 12.2 million 3.5 million China
        Orange 5 07 Sep 2021 06:00 213 27.9 million 5.9 million China
        Orange 6 07 Sep 2021 12:00 241 32.3 million 50 thousand China
        Orange 7 07 Sep 2021 18:00 241 58 million 1.4 million China
        Orange 8 08 Sep 2021 00:00 176 44.1 million 1.9 million China
        Orange 9 08 Sep 2021 06:00 241 54.4 million 3.3 million Philippines, China

        Bulletin Timeline

          Alert N° Date (UTC) Category
          (SSHS)           		Max winds
          (km/h)           		Population in
          Cat.1 or higher           		Population in
          Tropical Storm
          or higher           		Location (lat, lon) Countries
          GREEN
          		 1 06 Sep 2021 06:00 Tropical depression 46 no people no people 14, 138.3
          GREEN
          		 2 06 Sep 2021 12:00 Tropical depression 56 no people no people 14.7, 138.1
          GREEN
          		 3 06 Sep 2021 18:00 Tropical storm 83 no people no people 15.3, 137.4
          GREEN
          		 4 07 Sep 2021 00:00 Tropical storm 93 no people no people 15.6, 136.6
          GREEN
          		 5 07 Sep 2021 06:00 Category 1 120 no people no people 16.1, 135.7
          GREEN
          		 6 07 Sep 2021 12:00 Category 1 130 no people no people 16.3, 134.6
          GREEN
          		 7 07 Sep 2021 18:00 Category 4 231 no people no people 16.3, 133.5
          GREEN
          		 8 08 Sep 2021 00:00 Category 4 222 no people no people 16, 132.3
          GREEN
          		 9 08 Sep 2021 06:00 Category 5 259 no people no people 15.6, 131.3
          GREEN
          		 9 08 Sep 2021 18:00 Category 4 241 no people no people 15.4, 129.4
          GREEN
          		 9 09 Sep 2021 06:00 Category 4 222 no people no people 15.9, 127.2
          GREEN
          		 9 09 Sep 2021 18:00 Category 4 222 4100 people 2.9 million people 16.9, 124.9
          ORANGE
          		 9 10 Sep 2021 06:00 Category 4 241 55000 people 3.8 million people 18.3, 122.7
          GREEN
          		 9 11 Sep 2021 06:00 Category 4 231 no people 4.9 million people 20.4, 119.9
          ORANGE
          		 9 12 Sep 2021 06:00 Category 2 176 3.2 million people 49.9 million people 22, 118.4
          GREEN
          		 9 13 Sep 2021 06:00 Category 1 130 no people no people 24.6, 116.8 China
          Actual track of the current bulletin
          The alert for forecast greater than 3 days is limited to Orange level.
          Download:



          Exposed population - AoIs

          Exposed population in the potential affected countries, provinces and populated places

          Countries

          Country
          Philippines
          China

          Provinces

          Region Province Country
          Cagayan Valley Philippines
          Fujian China
          Guangdong China

          Populated places

          Name Region Province Country City class Population
          Chengguanzhen Fujian China City -
          Duxun Fujian China City -
          Shenao Guangdong China City -
          Zhaoan Guangdong China City -
          Zhelin Guangdong China City -
          Xiahe Fujian China City -
          Huanggang Guangdong China City 220000 people
          Daxi Fujian China City -
          Jiufeng Fujian China City -
          Sanjao Guangdong China City -
          Chayang Guangdong China City -
          Fengcheng Fujian China City -

          Critical infrastructure

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

          Ports

          Name LOCODE Country
          Port San Vicente Philippines
          Calayan Philippines

          Dams

          Reservoir Dam Name River Year
          Zumalin Xugouxi 1976
          Dutang Baiyinxi 1959
          Fengtou Zhang Jiang 1977
          Tangxi Huanggang He 1962
          Mianhuatan Trib. Ting Jiang n/a
          TOP

          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

          0.6 m

          The maximum Storm surge height is  0.6m in Dadao, Philippines. This height is estimated for 10 Sep 2021 16:00 UTC .

          The JRC has developed an experimental global storm surge model. 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 (125 locations). Calculation based on advisory number 9 of 08 Sep 2021 06:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          10 Sep 2021 16:00 Dadao Philippines  0.6
          10 Sep 2021 13:00 Cadagatan Philippines  0.6
          10 Sep 2021 18:00 Kaniwalan Philippines  0.6
          10 Sep 2021 13:00 Minabul Philippines  0.6
          10 Sep 2021 18:00 Banua Philippines  0.4
          10 Sep 2021 10:00 San Vincente Philippines  0.4
          10 Sep 2021 10:00 Bawa Philippines  0.4
          10 Sep 2021 10:00 Cabiraoan Philippines  0.4
          10 Sep 2021 10:00 Casambalangan Philippines  0.4
          10 Sep 2021 18:00 Rarasi Philippines  0.3
          10 Sep 2021 10:00 Gonzaga Philippines  0.3
          10 Sep 2021 16:00 Nagsidel Philippines  0.3
          10 Sep 2021 15:00 San Dionisio Philippines  0.2
          12 Sep 2021 06:00 Guleitou China  0.2
          12 Sep 2021 06:00 Gangkou China  0.2
          12 Sep 2021 06:00 Liu'ao China  0.2
          10 Sep 2021 10:00 Buguey Philippines  0.2
          12 Sep 2021 06:00 Chendai China  0.2
          12 Sep 2021 06:00 Hsi-pu China  0.2
          10 Sep 2021 17:00 Visita Philippines  0.2
          12 Sep 2021 06:00 Huqiu China  0.2
          12 Sep 2021 06:00 Wutian China  0.2
          12 Sep 2021 06:00 Chihu China  0.2
          12 Sep 2021 06:00 Shentu China  0.2
          12 Sep 2021 06:00 Xucuo China  0.2
          12 Sep 2021 06:00 Gulangyu China  0.2
          10 Sep 2021 08:00 Balza Philippines  0.2
          12 Sep 2021 06:00 Gongqiancun China  0.2
          12 Sep 2021 06:00 Chencheng China  0.2
          12 Sep 2021 06:00 Daomei China  0.2
          12 Sep 2021 06:00 Songyu China  0.2
          12 Sep 2021 06:00 Xiamen China  0.2
          12 Sep 2021 06:00 Dongyuan China  0.2
          12 Sep 2021 06:00 Zhangban China  0.2
          12 Sep 2021 06:00 Dongsha China  0.2
          12 Sep 2021 06:00 Lingchuan China  0.2
          10 Sep 2021 16:00 Poso Philippines  0.2
          12 Sep 2021 06:00 Hsia-mei China  0.2
          12 Sep 2021 06:00 Fotan China  0.2
          12 Sep 2021 06:00 Chen-hai China  0.2
          12 Sep 2021 06:00 Zhenhai China  0.2
          12 Sep 2021 06:00 Zhelin China  0.2
          12 Sep 2021 06:00 Chengguanzhen China  0.2
          12 Sep 2021 06:00 Fugong China  0.2
          12 Sep 2021 06:00 Gangwei China  0.2
          12 Sep 2021 06:00 Guangao China  0.2
          12 Sep 2021 06:00 Yongning China  0.2
          12 Sep 2021 06:00 Shih-shih China  0.2
          12 Sep 2021 06:00 Hsiang-chih China  0.2
          12 Sep 2021 06:00 Dianqian China  0.2
          10 Sep 2021 10:00 Punta Philippines  0.1
          10 Sep 2021 12:00 Alilinu Philippines  0.1
          10 Sep 2021 16:00 Sorongan Philippines  0.1
          12 Sep 2021 06:00 Raoping China  0.1
          12 Sep 2021 06:00 Chelim China  0.1
          12 Sep 2021 06:00 Gongkou China  0.1
          12 Sep 2021 06:00 Dongshan China  0.1
          12 Sep 2021 06:00 Hecuo China  0.1
          12 Sep 2021 06:00 Tung-shih China  0.1
          12 Sep 2021 06:00 Yakou China  0.1
          12 Sep 2021 06:00 Shihu China  0.1
          12 Sep 2021 06:00 Qian'an China  0.1
          12 Sep 2021 06:00 Chongwu China  0.1
          12 Sep 2021 06:00 Hushi China  0.1
          10 Sep 2021 12:00 Cabuluan Philippines  0.1
          12 Sep 2021 06:00 Houzhai China  0.1
          12 Sep 2021 06:00 Jiuzhen China  0.1
          12 Sep 2021 06:00 Huanggang China  0.1
          12 Sep 2021 06:00 Jiangtou China  0.1
          12 Sep 2021 06:00 An-ting Taiwan  0.1
          12 Sep 2021 06:00 Chin-men Taiwan  0.1
          12 Sep 2021 06:00 Chin-men Tao Taiwan  0.1
          12 Sep 2021 06:00 Yang-chai Taiwan  0.1
          12 Sep 2021 06:00 Weitou China  0.1
          12 Sep 2021 06:00 Aotou China  0.1
          12 Sep 2021 06:00 Wangchuan China  0.1
          12 Sep 2021 06:00 Dawu China  0.1
          12 Sep 2021 06:00 Fengwei China  0.1
          12 Sep 2021 06:00 Daitou China  0.1
          12 Sep 2021 06:00 Jinghai China  0.1
          12 Sep 2021 06:00 Hanjiang China  0.1
          12 Sep 2021 06:00 Chiang-k'ou China  0.1
          10 Sep 2021 12:00 Catuguran Philippines  0.1
          10 Sep 2021 10:00 Aparri Philippines  0.1
          10 Sep 2021 17:00 Banoa Philippines  0.1
          12 Sep 2021 06:00 Sidu China  0.1
          12 Sep 2021 06:00 Ssu-tu China  0.1
          12 Sep 2021 06:00 Ch'ing-hsu Taiwan  0.1
          12 Sep 2021 06:00 Chin-ching China  0.1
          12 Sep 2021 06:00 Liuwudian China  0.1
          12 Sep 2021 06:00 Hsiao-tso China  0.1
          12 Sep 2021 06:00 Zhongmen China  0.1
          12 Sep 2021 06:00 P'u-hsi China  0.1
          12 Sep 2021 06:00 Huanglong China  0.1
          12 Sep 2021 06:00 Baisheng China  0.1
          12 Sep 2021 06:00 Shenao China  0.1
          12 Sep 2021 06:00 Nanao China  0.1
          12 Sep 2021 06:00 Haimen China  0.1
          12 Sep 2021 06:00 Shantou China  0.1
          12 Sep 2021 06:00 Dahao China  0.1
          12 Sep 2021 06:00 Aotou China  0.1
          12 Sep 2021 06:00 Daitou China  0.1
          12 Sep 2021 06:00 Siwei China  0.1
          12 Sep 2021 06:00 Lianhe China  0.1
          12 Sep 2021 06:00 P'u-hsi-ch'eng China  0.1
          12 Sep 2021 06:00 Meizhou China  0.1
          12 Sep 2021 06:00 Xindian China  0.1
          12 Sep 2021 06:00 Chiang-chun-ao Taiwan  0.1
          12 Sep 2021 06:00 Cao Yu China  0.1
          12 Sep 2021 06:00 Beicuo China  0.1
          12 Sep 2021 06:00 Chiang-t'ien China  0.1
          12 Sep 2021 06:00 Jingzhou China  0.1
          10 Sep 2021 10:00 Linao Philippines  0.1
          10 Sep 2021 10:00 Bisagu Philippines  0.1
          10 Sep 2021 14:00 Naguilian Philippines  0.1
          10 Sep 2021 14:00 Abulug Philippines  0.1
          12 Sep 2021 06:00 Shijing China  0.1
          12 Sep 2021 06:00 Pinghai China  0.1
          12 Sep 2021 06:00 Donghong China  0.1
          12 Sep 2021 06:00 Nanri China  0.1
          12 Sep 2021 06:00 Wuhang China  0.1
          12 Sep 2021 06:00 Tangbian China  0.1
          12 Sep 2021 06:00 Fuye China  0.1
          12 Sep 2021 06:00 Tung-tai China  0.1
          12 Sep 2021 06:00 Guanban China  0.1