Overall Green alert Tropical Cyclone for NEPARTAK-21
in Japan
23 Jul 2021 18 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 0.3 m (27 Jul 14:00 UTC)
    Vulnerability Low (Japan)
    Landfall between
    26 Jul 2021 18:00 - 27 Jul 2021 18:00
    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 0.3 m n.a. 0.5
    Overall 83 km/h 0.3 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 13.7 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

        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
          		 2 24 Jul 2021 06:00 Tropical storm 74 no people no people 26, 149.8
          GREEN
          		 2 24 Jul 2021 18:00 Tropical storm 74 no people no people 27.9, 150.2
          GREEN
          		 2 25 Jul 2021 06:00 Tropical storm 83 no people no people 30, 150.1
          GREEN
          		 2 25 Jul 2021 18:00 Tropical storm 83 no people no people 31.7, 148.4
          GREEN
          		 2 26 Jul 2021 18:00 Tropical storm 65 no people 13.7 million people 35, 144.2
          GREEN
          		 2 27 Jul 2021 18:00 Tropical depression 56 no people no people 37.9, 140.4 Japan
          GREEN
          		 2 28 Jul 2021 18:00 Tropical depression 46 no people no people 39.9, 137.3
          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
          Tohoku Japan

          Populated places

          Name Region Province Country City class Population
          Choshi Chiba Japan City 84000 people
          Naruto Chiba Japan City 22000 people
          Tako Chiba Japan City -
          Omigawa Chiba Japan City 25000 people
          Narita Chiba Japan City 100000 people
          Mito Ibaraki Japan Major city 240000 people
          Kuji Ibaraki Japan City 35000 people
          Tsukuba Ibaraki Japan City 180000 people
          Hitachi Ibaraki Japan City 180000 people
          Shimodate Ibaraki Japan City 63000 people
          Koga Ibaraki Japan City 57000 people
          Oyama Tochigi Japan City 150000 people
          Onahama Fukushima Japan City -
          Ueda Fukushima Japan City -
          Taira Fukushima Japan City -
          Karasuyama Tochigi Japan City 18000 people
          Utsunmiya Tochigi Japan City -
          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
          Yonezawa Yamagata Japan City 93000 people
          Wakuya Miyagi Japan City 18000 people
          Yamagata Yamagata Japan Major city 250000 people
          Furukawa Miyagi Japan City 76000 people
          Sanuma Miyagi Japan City -
          Nagaoka Niigata Japan City 200000 people
          Kashiwazaki Niigata Japan City 85000 people
          Sanjo Niigata Japan City 82000 people
          Niitsu Niigata Japan City 65000 people
          Shibata Niigata Japan City 80000 people
          Kameda Niigata Japan City 32000 people
          Maki Niigata Japan City 29000 people
          Ichinoseki Iwate Japan City 62000 people
          Niigata Niigata Japan Major city 500000 people
          Mizusawa Iwate Japan City 61000 people
          Sakata Yamagata Japan City 100000 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)
          Tokyo Narita International NRT 42 Civ. Paved Yes 13100
          Ryugasaki South 2 0
          Ryugasaki 2 0
          26 0
          Hyakuri 32 Mil. Paved Yes 8800
          Suzumenomiya 82 0
          Utsunomiya QUT 102 Civ. Paved Yes 5500
          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
          Ojojibara 70 0
          Junmachi GAJ 108 Civ. Paved Yes 6500
          Niigata KIJ 7 Civ. Paved Yes 8200
          Shonai SYO 22 Civ. Paved Yes 6500
          23 0

          Ports

          Name LOCODE Country
          Choshi JPCHO Japan
          Kashima JPKSM Japan
          Hitachi JPHTC Japan
          Onahama JPONA Japan
          Soma JPSMA Japan
          Onagawa JPONG Japan
          Ishinomaki JPISM Japan
          Shiogama JPSGM Japan
          Kesennuma Ko Japan
          Ofunato JPOFT Japan
          Niigata-Higashi Japan
          Aikawa JPAIK Japan
          Niigata JPKIJ Japan
          Ryotu Wan JPSDO Japan
          Sakata JPSKT Japan
          Sado Island Japan

          Dams

          Reservoir Dam Name River Year
          Kasumigaura Kasumigaura-Kaihatsu Tonegawa 1995
          Jajanboike Kozogawa Kozogawa 1985
          Yanakako Wataraseyusuichi Watarasegawa 1989
          Mizunuma Mizunuma Hanazonokawa 1966
          Shitokiko Shitoki Shitokigawa 1983
          Takashibako Takashiba Samekawa 1961
          Sakashita Sakashita Okawaragawa 1973
          Bobatako Sengozawa Kitasugawa 1974
          Terayama Terayama Miyakawa 1984
          Kusakiko Kusaki Watarasegawa 1976
          Higashikoyako Nishiarakawa Nishiarakawa 1967
          Shiobara Shiobara Hokigawa 1978
          Imaichichoseichi Imaichi Togawa 1988
          Chuzenjiko Chuzenji Daiyagawa 1998
          Ogaki Ogaki Ukedogawa 1985
          Kuriyamachoseichi Kuriyama Nebesawagawa 1988
          Sabigawa Sabigawa Sabigawa 1994
          Ikariko Ikari Ojikagawa 1956
          Yashioko Kawaji Kunugawa 1983
          Kurobe Kurobe Kinugawa 1912
          Yokokawa Yokokawa Otagawa 1983
          Sonoharako Sonohara Katashinagawa 1965
          Miyamako Miyama Nakagawa 1973
          Takanokura Takanokura Mizunashigawa 1975
          Kawamatako Kawamata Kinugawa 1966
          Fujinumachosuichi Fujimuna Ebanagawa 1948
          Marunumako Marunuma Otakigawa 1931
          Hatoriko Hatori Tsurunumagawa 1955
          Fukadachoseichi Fukadachoseichi Tadanogawa 1982
          Tanbarako Tanbara Hocchigawa 1981
          Tamanotameike Tamano Udagawa 1945
          Fujiwarako Fujiwara Tonegawa 1957
          Wakasatoko Okawa Agagawa 1987
          Ouchi Ouchi Onogawa 1991
          Naramatako Naramata Naramatagawa 1990
          Dogenko Sudagai Tonegawa 1955
          Yoshigadaira Yoshigadaira Harakawa 1970
          Otsumata Otsumata Otsumatagawa 1968
          Yunoiriko Higashiyama Yugawa 1982
          Okutoneko Yagisawa Tonegawa 1967
          Ginzanko Okutadami Tadamigawa 1960
          Shakunageko Sagurigawa Sagurigawa 1993
          1991
          Sekishiba Sekishiba Ubadogawa 1958
          Tagokurako Tagokura Tadamigawa 1959
          Tadamiko Tadami Tadamigawa 1989
          Tarumizuko Tarumizu Masudagawa 1976
          Kawarago Kawarago Shiroishigawa 1968
          Houjonoumi Mizukubo Kariyasugawa 1971
          Kuromatagawadaini Kuromatagawadaini Kuromatagawa 1964
          Nicchuhizawako Nicchu Oshikirigawa 1991
          Aburumagawa Aburumagawa Aburumagawa 1986
          Kuromatagawadaiichi Kuromatagawadaiichi Kuromatagawa 1958
          Kamafusako Kamafusa Goishigawa 1970
          Birusawako Birusawatameike Yashirogawa 1948
          Okurako Okura Okuragawa 1961
          Himesayuriko Otani Igarashigawa 1993
          Kasaboriko Kasabori Kasaborigawa 1964
          Nanakita Nanakita Nanakitagawa 1984
          Maekawa Maekawa Maekawa 1982
          Nanatsumoriko Minamikawa Minamikawa 1987
          Kajigawa Kajigawachisui Kajigawa 1974
          Naganuma Naganuma Hazamagawa 2005
          Kejonuma Kejonuma Tajirigawa 1995
          Uchinokurako Uchinokura Uchinokuragawa 1972
          Kijiyama Kijiyama Okimatanogawa 1960
          Tainaigawa Tainaigawa Tainaigawa 1979
          Kamigo Kamigo Mogamigawa 1962
          Meigenko Urushizawa Narusegawa 1980
          Oishiko Oishi Oishigawa 1980
          Iwafune Iwafune Arakawa 1961
          Hanayamako Hanayama Hazamagawa 2004
          Araoko Naruko Eaigawa 1958
          1999
          Sarutachosuichi Saruta Sarutagawa 1955
          Gassanko Sagae Sagaegawa 1990
          Miomotechosuichi Miomote Miomotegawa 1953
          Kurikoma Kurikoma Sanhazamagawa 1961
          Yakuwa Yakuwa Bonjigawa 1957
          Arasawako Arasawa Akagawa 1955
          Masuzawa Masuzawa Izumitagawa 1963
          Ishibuchiko Ishibuchi Isawagawa 1953
          Oyasukyoko Minase Minasegawa 1963
          Okuatsumiko Atsumigawa Atsumigawa 1986
          Senganishitameike Senganishi Shukunaigawa 1934
          Ishibane Ishibane Wagagawa 1954
          Takasaka Takasaka Sakegawa 1967
          Kinshuko Yuda Wagagawa 1964
          Ainono Ainono Yokotegawa 1960
          Kuromorigawadaiichicosuichi Kuromorigawadaiichi Kuromorigawa 1976

          Nuclear plants

          Name Country Reactors
          TOKAI JAPAN 3
          FUKUSHIMA-DAINI JAPAN 4
          FUKUSHIMA-DAIICHI JAPAN 6
          ONAGAWA JAPAN 3
          KASHIWAZAKI KARIWA JAPAN 7
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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

          0.3 m

          The maximum Storm surge height is  0.3m in Futaba, Japan. This height is estimated for 27 Jul 2021 14:00 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 (126 locations). Calculation based on advisory number 2 of 23 Jul 2021 18:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          27 Jul 2021 14:00 Futaba Japan  0.3
          27 Jul 2021 14:00 Namie Japan  0.3
          27 Jul 2021 14:00 Kiyohashi Japan  0.3
          27 Jul 2021 14:00 Oragahama Japan  0.3
          27 Jul 2021 14:00 Odaka Japan  0.3
          27 Jul 2021 14:00 Onaba Japan  0.2
          26 Jul 2021 18:00 Okunoya Japan  0.2
          26 Jul 2021 18:00 Choshi Japan  0.2
          27 Jul 2021 14:00 Tomioka Japan  0.2
          26 Jul 2021 18:00 Yatabe Japan  0.2
          27 Jul 2021 13:00 Naraha Japan  0.2
          27 Jul 2021 13:00 Kami-Shigeoka Japan  0.2
          27 Jul 2021 14:00 Takahira Japan  0.2
          27 Jul 2021 14:00 Kayahama Japan  0.2
          27 Jul 2021 13:00 Ide Japan  0.2
          26 Jul 2021 18:00 Kashima Japan  0.2
          26 Jul 2021 18:00 Komagamine Japan  0.2
          26 Jul 2021 18:00 Nakumura Japan  0.2
          26 Jul 2021 18:00 Tsurishi Japan  0.2
          27 Jul 2021 15:00 Tachiya Japan  0.2
          26 Jul 2021 18:00 Haragama Japan  0.2
          27 Jul 2021 15:00 Umekawa Japan  0.2
          27 Jul 2021 15:00 Isobe Japan  0.2
          26 Jul 2021 18:00 Omi Japan  0.2
          26 Jul 2021 18:00 Hamatsuga Japan  0.2
          26 Jul 2021 18:00 Aotsuka Japan  0.2
          26 Jul 2021 18:00 Kyuchu Japan  0.2
          26 Jul 2021 18:00 Koya Japan  0.2
          26 Jul 2021 16:00 Natsumi Japan  0.2
          26 Jul 2021 18:00 Sakamoto Japan  0.2
          26 Jul 2021 18:00 Iso Japan  0.2
          27 Jul 2021 14:00 Minami-Ibi Japan  0.2
          27 Jul 2021 13:00 Kami-Asamigawa Japan  0.2
          27 Jul 2021 13:00 Shimo-Kitabo Japan  0.2
          26 Jul 2021 18:00 Hokota Japan  0.2
          26 Jul 2021 18:00 Taiyo Japan  0.2
          26 Jul 2021 18:00 Otake Japan  0.2
          26 Jul 2021 18:00 Dainigorisawa Japan  0.2
          26 Jul 2021 18:00 Muyokama Japan  0.2
          26 Jul 2021 18:00 Kyochikama Japan  0.2
          26 Jul 2021 16:00 Katsuori Japan  0.2
          26 Jul 2021 13:00 Asahi Yokaichiba Japan  0.2
          26 Jul 2021 16:00 Noda Japan  0.2
          27 Jul 2021 15:00 Yamashita Japan  0.2
          27 Jul 2021 15:00 Yokoyama Japan  0.2
          27 Jul 2021 15:00 Kasano Japan  0.2
          27 Jul 2021 15:00 Hanagama Japan  0.2
          27 Jul 2021 12:00 Aratame Japan  0.2
          27 Jul 2021 12:00 Omori Japan  0.2
          27 Jul 2021 12:00 Arayashik Japan  0.2
          27 Jul 2021 12:00 Yotsukura Japan  0.2
          26 Jul 2021 20:00 Kubota Japan  0.2
          26 Jul 2021 20:00 Ueda Japan  0.2
          26 Jul 2021 20:00 Terashita Japan  0.2
          26 Jul 2021 20:00 Hirakata Japan  0.2
          26 Jul 2021 18:00 Kamigama Japan  0.2
          26 Jul 2021 18:00 Shirane Japan  0.2
          26 Jul 2021 18:00 Toyooka Japan  0.2
          26 Jul 2021 18:00 Kuji Japan  0.2
          27 Jul 2021 15:00 Shibamachi Japan  0.2
          27 Jul 2021 15:00 Warabi Japan  0.2
          27 Jul 2021 15:00 Kaikomba Japan  0.2
          27 Jul 2021 15:00 Arahama Japan  0.2
          27 Jul 2021 15:00 Kabasaki Japan  0.2
          27 Jul 2021 14:00 Kashima Japan  0.2
          27 Jul 2021 13:00 Bogoya Japan  0.2
          27 Jul 2021 11:00 Ena Japan  0.2
          27 Jul 2021 11:00 Shimo-Takaku Japan  0.2
          27 Jul 2021 11:00 Toyoma Japan  0.2
          26 Jul 2021 18:00 Mizuki Japan  0.2
          26 Jul 2021 19:00 Narusawa Japan  0.2
          26 Jul 2021 19:00 Moto-Kawarago Japan  0.2
          27 Jul 2021 15:00 Watari Japan  0.1
          27 Jul 2021 15:00 Hayakawa Japan  0.1
          26 Jul 2021 20:00 Sangenchaya Japan  0.1
          26 Jul 2021 20:00 Ninokura Japan  0.1
          26 Jul 2021 23:00 Onahama Japan  0.1
          27 Jul 2021 11:00 Ohahama Japan  0.1
          26 Jul 2021 20:00 Kitakubo Japan  0.1
          26 Jul 2021 20:00 Kisara Japan  0.1
          26 Jul 2021 20:00 Ono-Yasashi Japan  0.1
          26 Jul 2021 20:00 Isohara Japan  0.1
          26 Jul 2021 20:00 Shuku Japan  0.1
          26 Jul 2021 22:00 Ogushi Japan  0.1
          26 Jul 2021 22:00 Nagasuna Japan  0.1
          26 Jul 2021 22:00 Nakaminato Japan  0.1
          27 Jul 2021 16:00 Shimo-Masuda Japan  0.1
          27 Jul 2021 16:00 Ainokama Japan  0.1
          27 Jul 2021 16:00 Kita-Kama Japan  0.1
          27 Jul 2021 16:00 Fujitsuka Japan  0.1
          27 Jul 2021 16:00 Ido Japan  0.1
          26 Jul 2021 23:00 Obama Japan  0.1
          26 Jul 2021 22:00 Tomobe Japan  0.1
          26 Jul 2021 22:00 Kawaziri Japan  0.1
          26 Jul 2021 22:00 Kawajiri Japan  0.1
          26 Jul 2021 22:00 Hama Japan  0.1
          26 Jul 2021 22:00 Yunami Japan  0.1
          26 Jul 2021 23:00 Tokawacho Japan  0.1
          26 Jul 2021 23:00 Inuwaka Japan  0.1
          26 Jul 2021 23:00 Soeno Japan  0.1
          26 Jul 2021 23:00 Tanebe Japan  0.1
          27 Jul 2021 15:00 Tago Japan  0.1
          27 Jul 2021 15:00 Niida Japan  0.1
          27 Jul 2021 16:00 Fukanuma Japan  0.1
          27 Jul 2021 15:00 Shinhama Japan  0.1
          27 Jul 2021 15:00 Wada-Shinden Japan  0.1
          27 Jul 2021 15:00 Gamo Japan  0.1
          27 Jul 2021 15:00 Shobudahama Japan  0.1
          27 Jul 2021 15:00 Umenomiya-Jutaku Japan  0.1
          27 Jul 2021 15:00 Shiogama Japan  0.1
          26 Jul 2021 23:00 Ogitsu Japan  0.1
          26 Jul 2021 23:00 Tajirihama Japan  0.1
          26 Jul 2021 23:00 Hitachi Japan  0.1
          26 Jul 2021 19:00 Asahi Japan  0.1
          26 Jul 2021 19:00 Oyagaw Japan  0.1
          27 Jul 2021 16:00 Tsukihama Japan  0.1
          27 Jul 2021 15:00 Uenodai Japan  0.1
          27 Jul 2021 15:00 Ishinomaki Japan  0.1
          27 Jul 2021 15:00 Moto-Funaba Japan  0.1
          27 Jul 2021 10:00 Sumiyoshi Japan  0.1
          27 Jul 2021 16:00 Hamaichi Japan  0.1
          27 Jul 2021 16:00 Schiogama Japan  0.1
          27 Jul 2021 16:00 Takaki Japan  0.1
          26 Jul 2021 14:00 Katakai Japan  0.1
          27 Jul 2021 16:00 Ono Japan  0.1
          27 Jul 2021 16:00 Takagi Japan  0.1