Overall Green alert Tropical Cyclone for NEPARTAK-21
in Japan
24 Jul 2021 00 UTC
click on to select bulletin time
  • GDACS JTWC
Impact Single TC
Impact based on all weather systems in the area

Impact

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

    Meteorological source GDACS
    Exposed countries Japan
    Exposed population No people in Category 1 or higher
    Maximum wind speed 83 km/h
    Maximum storm surge
    Vulnerability Low (Japan)
    Landfall between
    27 Jul 2021 00:00 - 28 Jul 2021 00:00
    in Japan

    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 83 km/h 0.0 m n.a. 0.5
    Overall 83 km/h 0.0 m n.a. 0.5

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

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    Wind

      83 km/h Current Max.

      Up to 45.8 million people in Tropical Storm 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 23 Jul 2021 12:00 93 45.7 million No people Japan
        Green 2 23 Jul 2021 18:00 83 13.7 million No people Japan
        Green 3 24 Jul 2021 00:00 83 45.8 million No people Japan

        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 23 Jul 2021 12:00 Tropical depression 56 no people no people 24, 148.6
          GREEN
          		 2 23 Jul 2021 18:00 Tropical storm 65 no people no people 24.7, 149.4
          GREEN
          		 3 24 Jul 2021 00:00 Tropical storm 65 no people no people 25, 149.5
          GREEN
          		 3 24 Jul 2021 12:00 Tropical storm 74 no people no people 26.2, 149.8
          GREEN
          		 3 25 Jul 2021 00:00 Tropical storm 83 no people no people 28, 150
          GREEN
          		 3 25 Jul 2021 12:00 Tropical storm 74 no people no people 30.1, 149.1
          GREEN
          		 3 26 Jul 2021 00:00 Tropical storm 65 no people 45.8 million people 31.9, 147.3
          GREEN
          		 3 27 Jul 2021 00:00 Tropical depression 56 no people no people 35.2, 143.2
          GREEN
          		 3 28 Jul 2021 00:00 Tropical depression 28 no people no people 37.9, 140 Japan
          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
          Japan

          Provinces

          Region Province Country
          Kanto Japan
          Chubu Japan
          Tohoku Japan

          Populated places

          Name Region Province Country City class Population
          Mitsune Shizuoka Japan City -
          Ohara Chiba Japan City 20000 people
          Chikura Chiba Japan City -
          Tateyama Chiba Japan City 49000 people
          Choshi Chiba Japan City 84000 people
          Mobara Chiba Japan City 96000 people
          Katakai Chiba Japan City -
          Naruto Chiba Japan City 22000 people
          Tako Chiba Japan City -
          Kisarazu Chiba Japan City 120000 people
          Omigawa Chiba Japan City 25000 people
          Narita Chiba Japan City 100000 people
          Yokosuka Kanagawa Japan City 420000 people
          Chiba Chiba Japan Major city 920000 people
          Sakura Chiba Japan City 180000 people
          Kamakura Kanagawa Japan City 160000 people
          Ito Shizuoka Japan City 72000 people
          Fujisawa Kanagawa Japan City 390000 people
          Funabashi Chiba Japan City 560000 people
          Yokohama Kanagawa Japan Major city 3.6 million people
          Kawasaki Kanagawa Japan Major city 1.3 million people
          Kamagaya Chiba Japan City 110000 people
          Ichikawa Chiba Japan City 460000 people
          Atami Shizuoka Japan City 40000 people
          Tokyo Tokyo Japan Capital 8.1 million people
          Hiratsuka Kanagawa Japan City 260000 people
          Chigasaki Kanagawa Japan City 230000 people
          Matsudo Chiba Japan City 460000 people
          Abiko Chiba Japan City 130000 people
          Odawara Kanagawa Japan City 200000 people
          Isehara Kanagawa Japan City 100000 people
          Atsugi Kanagawa Japan City 230000 people
          Mishima Shizuoka Japan City 110000 people
          Numazu Shizuoka Japan City 200000 people
          Chofu Tokyo Japan City 200000 people
          Noda Chiba Japan City 120000 people
          Kodaira Tokyo Japan City 190000 people
          Mito Ibaraki Japan Major city 240000 people
          Tachikawa Tokyo Japan City 170000 people
          Kuji Ibaraki Japan City 35000 people
          Hachioji Tokyo Japan City 540000 people
          Tsukuba Ibaraki Japan City 180000 people
          Omiya Saitama Japan City 440000 people
          Hitachi Ibaraki Japan City 180000 people
          Kawagoe Saitama Japan City 330000 people
          Hanno Saitama Japan City 82000 people
          Shimodate Ibaraki Japan City 63000 people
          Fuji-yoshida Yamanashi Japan City -
          Sakado Saitama Japan City 96000 people
          Koga Ibaraki Japan City 57000 people
          Onahama Fukushima Japan City -
          Ueda Fukushima Japan City -
          Oyama Tochigi Japan City 150000 people
          Saitama Saitama Japan Major city 1.1 million people
          Taira Fukushima Japan City -
          Karasuyama Tochigi Japan City 18000 people
          Utsunmiya Tochigi Japan City -
          Kumagaya Saitama Japan City 150000 people
          Ashikaga Tochigi Japan City 160000 people
          Isezaki Gunma Japan City -
          Honjo Saitama Japan City 61000 people
          Kiryu Gunma Japan City 120000 people
          Takasaki Gunma Japan City 240000 people
          Maebashi Gunma Japan Major city 280000 people
          Koriyama Fukushima Japan City 320000 people
          Fukusaima Fukushima Japan City -
          Wakamatsu Fukushima Japan City -
          Ishinomaki Miyagi Japan City 120000 people
          Shiogama Miyagi Japan City 59000 people
          Sendai Miyagi Japan Major city 1 million people

          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)
          Minami Torishima 7 Civ. Paved No 4500
          Hachijo Jima HAC 92 Civ. Paved Yes 5900
          Miyake Jima MYE 20 Civ. Paved Yes 3900
          29 0
          Tateyama 3 0
          Oshima OIM 40 Civ. Paved Yes 3900
          Kisarazu 3 Mil. Paved Yes 6000
          Tokyo Narita International NRT 42 Civ. Paved Yes 13100
          Shimoshizu 30 0
          Tokyo Haneda International HND 7 Civ. Paved Yes 9800
          Ryugasaki South 2 0
          Yokohama YOK unknown 0
          Ryugasaki 2 0
          Shimofusa 30 Civ. Paved Yes 7300
          Atsugi NJA 62 Mil. Paved Yes 7900
          26 0
          Hyakuri 32 Mil. Paved Yes 8800
          Katsner AAF 109 Civ. Paved No 1900
          Chofu 41 Civ. Paved No 3200
          Tachikawa 95 0
          Chiba-ken 19 0
          Fuji 686 0
          Yokota AFB OKO 139 Mil. Paved Yes 11000
          Iruma 91 Mil. Paved Yes 6500
          Nashigahara 1001 0
          Honda 12 0
          Suzumenomiya 82 0
          Onishi 20 0
          Utsunomiya QUT 102 Civ. Paved Yes 5500
          Shimo Kolzumi 30 0
          Otawara 201 0
          Fukushima FKS 372 Civ. Paved Yes 8200
          Sendai SDJ 5 Civ. Paved Yes 9800
          Kasuminome 5 0
          Matsushima 2 Civ. Paved Yes 8800

          Ports

          Name LOCODE Country
          Minami Tori Japan
          Yaene Japan
          Mikura Japan
          Miyake Japan
          Kozu Island Japan
          Katsuura Ko Japan
          Nii Japan
          Tateyama JPTTY Japan
          Choshi JPCHO Japan
          Oshima JPOSM Japan
          Kurihama JPKRH Japan
          Kashima JPKSM Japan
          Kisarazu JPKZU Japan
          Goi JPGOI Japan
          Shimoda JPSMD Japan
          Chiba JPCHB Japan
          Yokosuka JPYOS Japan
          Anegasaki JPANE Japan
          Neghisi JPNGI Japan
          Katunan Ko Japan
          Kawasaki JPKWS Japan
          Yokohama JPYOK Japan
          Ogasawara JPOGA Japan
          Tokyo JPTYO Japan
          Numazu JPNUM Japan
          Hitachi JPHTC Japan
          Onahama JPONA Japan
          Soma JPSMA Japan
          Onagawa JPONG Japan
          Ishinomaki JPISM Japan
          Shiogama JPSGM Japan

          Dams

          Reservoir Dam Name River Year
          Kameyamako Kameyama Obitsugawa 1980
          Sakuma Sakuma Okuzuregawa 1990
          Takatakiko Takataki Yorogawa 1990
          Kori Kori Korigawa 1972
          Yamakura Yamakura Yamakuragawa 1964
          Kasumigaura Kasumigaura-Kaihatsu Tonegawa 1995
          Matsukawako Okuno Itookawa 1989
          Iizumishusuizeki Iizumishusuizeki Sakawagawa 1973
          Miyagaseko Miyagase Nakatsugawa 2001
          Tsukuiko Shiroyama Sagamigawa 1964
          Tanzawako Miho Kawauchigawa 1978
          Tamako Murayamashimo Tamagawa 2008
          Tamako Murayamakami Tamagawa 1924
          Jajanboike Kozogawa Kozogawa 1985
          Sagamiko Sagami Sagamigawa 1947
          Sayamako Yamaguchi Tamagawa 2002
          Ono Ono Yatagawa 1914
          Miyukiko Gongendochosetsuchi Nakagawa 1991
          Miyazawako Miyazawatameike Koazegawa 1941
          Yanakako Wataraseyusuichi Watarasegawa 1989
          Naguriko Arima Arimagawa 1985
          Mizunuma Mizunuma Hanazonokawa 1966
          Okutamako Ogohchi Tamagawa 1957
          Shitokiko Shitoki Shitokigawa 1983
          Takashibako Takashiba Samekawa 1961
          Chichibuko Futase Arakawa 1961
          Kannako Shimokubo Kannagawa 1968
          Sakashita Sakashita Okawaragawa 1973
          Bobatako Sengozawa Kitasugawa 1974
          Terayama Terayama Miyakawa 1984
          Higashikoyako Nishiarakawa Nishiarakawa 1967
          Kusakiko Kusaki Watarasegawa 1976
          Shiobara Shiobara Hokigawa 1978
          Ogaki Ogaki Ukedogawa 1985
          Imaichichoseichi Imaichi Togawa 1988
          Chuzenjiko Chuzenji Daiyagawa 1998
          Kuriyamachoseichi Kuriyama Nebesawagawa 1988
          Sabigawa Sabigawa Sabigawa 1994
          Ikariko Ikari Ojikagawa 1956
          Yashioko Kawaji Kunugawa 1983
          Yokokawa Yokokawa Otagawa 1983
          Kurobe Kurobe Kinugawa 1912
          Takanokura Takanokura Mizunashigawa 1975
          Miyamako Miyama Nakagawa 1973
          Sonoharako Sonohara Katashinagawa 1965
          Kawamatako Kawamata Kinugawa 1966
          Fujinumachosuichi Fujimuna Ebanagawa 1948
          Hatoriko Hatori Tsurunumagawa 1955
          Marunumako Marunuma Otakigawa 1931
          Fukadachoseichi Fukadachoseichi Tadanogawa 1982
          Tamanotameike Tamano Udagawa 1945
          Wakasatoko Okawa Agagawa 1987
          Ouchi Ouchi Onogawa 1991
          Yoshigadaira Yoshigadaira Harakawa 1970
          Yunoiriko Higashiyama Yugawa 1982
          1991
          Tarumizuko Tarumizu Masudagawa 1976
          Kawarago Kawarago Shiroishigawa 1968

          Nuclear plants

          Name Country Reactors
          TOKAI JAPAN 3
          FUKUSHIMA-DAINI JAPAN 4
          FUKUSHIMA-DAIICHI JAPAN 6
          ONAGAWA JAPAN 3
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          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 m

          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 (0 locations). Calculation based on advisory number 3 of 24 Jul 2021 00:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)