Overall Green alert Tropical Cyclone for CHALANE-20
in Mozambique, Zimbabwe, Madagascar, Botswana
25 Dec 2020 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 CHALANE-20 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

    Meteorological source GDACS
    Exposed countries Mozambique, Zimbabwe, Madagascar, Botswana
    Exposed population No people in Category 1 or higher
    Maximum wind speed 111 km/h
    Maximum storm surge 0.5 m (29 Dec 18:00 UTC)
    Vulnerability High (Madagascar)
    Landfall between
    26 Dec 2020 18:00 - 27 Dec 2020 06:00
    in Madagascar

    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 0.5 m n.a. 0.5
    Overall 111 km/h 0.5 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 5.4 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 24 Dec 2020 18:00 93 9.3 million No people Madagascar
        Green 2 25 Dec 2020 06:00 83 3.6 million No people Madagascar
        Green 3 25 Dec 2020 18:00 83 5.4 million No people Madagascar, Mozambique, Zimbabwe

        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 24 Dec 2020 18:00 Tropical storm 65 no people no people -15.8, 57.4
          GREEN
          		 2 25 Dec 2020 06:00 Tropical storm 65 no people no people -15.9, 55.6
          GREEN
          		 3 25 Dec 2020 18:00 Tropical storm 65 no people no people -16.2, 53.7
          GREEN
          		 3 26 Dec 2020 06:00 Tropical storm 65 no people 1.1 million people -16.1, 52
          GREEN
          		 3 26 Dec 2020 18:00 Tropical storm 74 no people 2.5 million people -16.3, 50.4
          GREEN
          		 3 27 Dec 2020 06:00 Tropical depression 56 no people no people -16.7, 48.5 Madagascar
          GREEN
          		 3 27 Dec 2020 18:00 Tropical depression 46 no people 140000 people -17.5, 46.5 Madagascar
          GREEN
          		 3 28 Dec 2020 18:00 Tropical storm 65 no people no people -19, 42.7
          GREEN
          		 3 29 Dec 2020 18:00 Tropical storm 83 no people 2.9 million people -18.8, 38.5
          GREEN
          		 3 30 Dec 2020 18:00 Tropical storm 65 no people no people -18.7, 33.8 Mozambique
          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
          Madagascar
          Mozambique
          Zimbabwe

          Provinces

          Region Province Country
          Antsiranana Madagascar
          Toamasina Madagascar
          Mahajanga Madagascar
          Zambezia Mozambique
          Sofala Mozambique
          Manica Mozambique
          Manicaland Zimbabwe

          Populated places

          Name Region Province Country City class Population
          Antalaha Antsiranana Madagascar City 34000 people
          Mananara Toamasina Madagascar City 41000 people
          Maroantsetra Toamasina Madagascar City 24000 people
          Fenerive Toamasina Madagascar City -
          Mandritsara Mahajanga Madagascar City -
          Quelimane Zambezia Mozambique City 190000 people
          Chimoio Manica Mozambique City 260000 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)
          Antalaha Antsirabato ANM 6 Civ. Paved No 3900
          Mananara Nord WMR 3 Civ. Paved No 4100
          Sainte Marie SMS 2 Civ. Paved No 3300
          Maroantsetra WMN 4 Civ. Paved No 4200
          Mandritsara WMA 307 Civ. Unpaved No 3700
          Ambatondrazaka WAM 766 Civ. Unpaved No 4200
          Tsaratanana TTS 327 Civ. Unpaved No 4300
          Quelimane UEL 11 Civ. Paved Yes 5900
          Chinde INE unknown 0
          Luabo LBM unknown 0
          Inhaminga IMG unknown 0
          Chimoio VPY 686 Civ. Paved No 7800

          Ports

          Name LOCODE Country
          Antataha MGANM Madagascar
          Saint Mary Island Madagascar
          Port Sainte Marie Madagascar
          Mananara MGWMR Madagascar
          Maroantsetra MGWMN Madagascar
          Foulpointe Madagascar
          Fenerive Madagascar
          Porto Belo MZPBE Mozambique
          Porto de Quelimane MZUEL Mozambique
          Vila Do Chinde Mozambique
          Chinde MZINE Mozambique

          Dams

          Reservoir Dam Name River Year
          Sahamaloto Sahamaloto 1958
          Bue Maria Pungoe n/a
          Revue Chicamba Real Revue 1959
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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

          0.5 m

          The maximum Storm surge height is  0.5m in Nhangau, Mozambique. This height is estimated for 29 Dec 2020 18:00 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 (199 locations). Calculation based on advisory number 3 of 25 Dec 2020 18:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          29 Dec 2020 18:00 Nhangau Mozambique  0.5
          29 Dec 2020 18:00 Damiao Mozambique  0.5
          29 Dec 2020 18:00 Chamba Mozambique  0.5
          29 Dec 2020 18:00 Beira Mozambique  0.5
          29 Dec 2020 18:00 Maconharumo Mozambique  0.5
          29 Dec 2020 18:00 Amado Mozambique  0.5
          25 Dec 2020 14:00 Ambodiatafa Madagascar  0.4
          29 Dec 2020 18:00 Chofandicho Mozambique  0.4
          29 Dec 2020 18:00 Chimuaza Mozambique  0.3
          29 Dec 2020 18:00 Tama Mozambique  0.3
          29 Dec 2020 18:00 Jonja Mozambique  0.3
          29 Dec 2020 18:00 Machesse Mozambique  0.3
          29 Dec 2020 18:00 Panaca Mozambique  0.3
          29 Dec 2020 18:00 Manica Mozambique  0.3
          29 Dec 2020 18:00 Mulia Mozambique  0.3
          26 Dec 2020 13:00 Ilomotro Madagascar  0.3
          26 Dec 2020 13:00 Andohonko Madagascar  0.3
          26 Dec 2020 13:00 Antsisikala Madagascar  0.3
          29 Dec 2020 18:00 Bingue Mozambique  0.3
          25 Dec 2020 13:00 Mahalevona Madagascar  0.3
          29 Dec 2020 00:00 Baly Madagascar  0.3
          26 Dec 2020 18:00 Fadrina Madagascar  0.3
          26 Dec 2020 21:00 Antanambe Madagascar  0.3
          25 Dec 2020 14:00 Maroantsetra Madagascar  0.3
          25 Dec 2020 14:00 Andranofotsy Madagascar  0.3
          29 Dec 2020 17:00 Ocone Mozambique  0.3
          29 Dec 2020 18:00 Rupia Mozambique  0.3
          29 Dec 2020 18:00 Vila do Chinde Mozambique  0.3
          26 Dec 2020 22:00 Manompana Madagascar  0.3
          26 Dec 2020 21:00 Manambato Madagascar  0.3
          29 Dec 2020 18:00 Barra Mozambique  0.3
          29 Dec 2020 18:00 Nhamatamanga Mozambique  0.3
          26 Dec 2020 07:00 Ankazomalemy Madagascar  0.3
          26 Dec 2020 22:00 Soanierana Ivongo Madagascar  0.3
          26 Dec 2020 21:00 Andrangazaha Madagascar  0.3
          29 Dec 2020 18:00 Quelimane do Sal Mozambique  0.3
          29 Dec 2020 18:00 Inhangulue Mozambique  0.3
          29 Dec 2020 18:00 Magromane Mozambique  0.3
          29 Dec 2020 18:00 Nova Sofala Mozambique  0.3
          25 Dec 2020 14:00 Anantoraka Madagascar  0.2
          26 Dec 2020 22:00 Fandrarazana Madagascar  0.2
          26 Dec 2020 22:00 Vatobe Madagascar  0.2
          26 Dec 2020 22:00 Antanetilava Madagascar  0.2
          28 Dec 2020 17:00 Boanamary Madagascar  0.2
          26 Dec 2020 18:00 Bobasakoa Madagascar  0.2
          25 Dec 2020 14:00 Manambia Madagascar  0.2
          25 Dec 2020 13:00 Ambanizana Madagascar  0.2
          25 Dec 2020 13:00 Benjana Madagascar  0.2
          26 Dec 2020 18:00 Ambodibonara Madagascar  0.2
          26 Dec 2020 18:00 Tanambao Madagascar  0.2
          26 Dec 2020 18:00 Anjabe Madagascar  0.2
          26 Dec 2020 18:00 Andranomena Madagascar  0.2
          26 Dec 2020 21:00 Andilamboahangy Madagascar  0.2
          26 Dec 2020 21:00 Ambatofitarafana Madagascar  0.2
          26 Dec 2020 18:00 Andranofotsy Madagascar  0.2
          29 Dec 2020 12:00 Ankazobe Madagascar  0.2
          26 Dec 2020 23:00 Ampasina Madagascar  0.2
          26 Dec 2020 22:00 Ampasimbe Madagascar  0.2
          26 Dec 2020 22:00 Manakalana Madagascar  0.2
          26 Dec 2020 21:00 Ambodimanga Madagascar  0.2
          29 Dec 2020 11:00 Manampea Madagascar  0.2
          28 Dec 2020 17:00 Majunga Madagascar  0.2
          26 Dec 2020 18:00 Ambatobe Madagascar  0.2
          25 Dec 2020 14:00 Voloina Madagascar  0.2
          26 Dec 2020 18:00 Fampotabe Madagascar  0.2
          26 Dec 2020 23:00 Mahavanona Madagascar  0.2
          26 Dec 2020 23:00 Antakobola Madagascar  0.2
          26 Dec 2020 23:00 Analanampotsy Madagascar  0.2
          26 Dec 2020 21:00 Ivontaka Madagascar  0.2
          26 Dec 2020 18:00 Anjanozana Madagascar  0.2
          29 Dec 2020 17:00 Reharaka Madagascar  0.2
          29 Dec 2020 03:00 Kamendriky Madagascar  0.2
          26 Dec 2020 06:00 Ambariomena Madagascar  0.2
          26 Dec 2020 06:00 Anorotsangana Madagascar  0.2
          26 Dec 2020 06:00 Antsahabe Madagascar  0.2
          26 Dec 2020 06:00 Ambodizaotra Madagascar  0.2
          26 Dec 2020 06:00 Antananabe Madagascar  0.2
          26 Dec 2020 06:00 Ampiambesa Madagascar  0.2
          26 Dec 2020 06:00 Antetezampolaka Madagascar  0.2
          25 Dec 2020 14:00 Tampolo Madagascar  0.2
          29 Dec 2020 14:00 Manomba Madagascar  0.2
          28 Dec 2020 17:00 Katsepy Madagascar  0.2
          27 Dec 2020 01:00 Manehoko Madagascar  0.2
          26 Dec 2020 18:00 Rantranavona Madagascar  0.2
          28 Dec 2020 10:00 Ampanihy Madagascar  0.2
          29 Dec 2020 17:00 Belailay Madagascar  0.2
          29 Dec 2020 09:00 Ambato Madagascar  0.2
          29 Dec 2020 02:00 Tsilambana Madagascar  0.2
          26 Dec 2020 18:00 Marokitrana Madagascar  0.2
          26 Dec 2020 18:00 Bevoay Madagascar  0.2
          29 Dec 2020 02:00 Morrua Mozambique  0.2
          26 Dec 2020 20:00 Seranambe Madagascar  0.2
          29 Dec 2020 17:00 Maintirano Madagascar  0.2
          28 Dec 2020 10:00 Andemba Madagascar  0.2
          29 Dec 2020 13:00 Tambohorano Madagascar  0.2
          29 Dec 2020 13:00 Ambatomilahy Madagascar  0.2
          29 Dec 2020 13:00 Ankirijibe Madagascar  0.2
          29 Dec 2020 16:00 Manometimay Madagascar  0.2
          29 Dec 2020 16:00 Antsamaka Madagascar  0.2
          26 Dec 2020 23:00 Fenerive Madagascar  0.2
          29 Dec 2020 10:00 Ankoakala Madagascar  0.2
          26 Dec 2020 21:00 Andanivato Madagascar  0.2
          26 Dec 2020 21:00 Ambatojoby Madagascar  0.2
          26 Dec 2020 21:00 Andramy Madagascar  0.2
          26 Dec 2020 21:00 Marotaola Madagascar  0.2
          26 Dec 2020 18:00 Maromokotra Madagascar  0.2
          26 Dec 2020 19:00 Madirotelo Madagascar  0.2
          29 Dec 2020 06:00 Caliua Mozambique  0.2
          25 Dec 2020 13:00 Rantabe Madagascar  0.2
          26 Dec 2020 17:00 Vinanivao Madagascar  0.2
          26 Dec 2020 17:00 Anaovandrano Madagascar  0.2
          29 Dec 2020 03:00 Ambalabao Madagascar  0.2
          29 Dec 2020 03:00 Bevatry Madagascar  0.2
          29 Dec 2020 14:00 Mendozo Mozambique  0.2
          29 Dec 2020 13:00 Mutiba Mozambique  0.2
          29 Dec 2020 09:00 Metapa Mozambique  0.2
          26 Dec 2020 10:00 Antsorokaka Madagascar  0.1
          27 Dec 2020 02:00 Ambatomainty Madagascar  0.1
          26 Dec 2020 20:00 Mananara Madagascar  0.1
          26 Dec 2020 22:00 Lonkintsy Madagascar  0.1
          26 Dec 2020 22:00 Lokintsy Madagascar  0.1
          29 Dec 2020 15:00 Antserananbondro Madagascar  0.1
          29 Dec 2020 15:00 Ankirijibe Madagascar  0.1
          29 Dec 2020 15:00 Kivalo Est Madagascar  0.1
          26 Dec 2020 17:00 Antanifatsy Madagascar  0.1
          28 Dec 2020 18:00 Ampapamena Madagascar  0.1
          28 Dec 2020 18:00 Masokoamena Madagascar  0.1
          26 Dec 2020 06:00 Ampasibe Madagascar  0.1
          29 Dec 2020 14:00 Carramali Mozambique  0.1
          28 Dec 2020 08:00 Ankinganomby Madagascar  0.1
          28 Dec 2020 08:00 Anjiajia Madagascar  0.1
          26 Dec 2020 17:00 Mahatsaborimaika Madagascar  0.1
          29 Dec 2020 05:00 Chululu Mozambique  0.1
          29 Dec 2020 00:00 Caramaca Mozambique  0.1
          28 Dec 2020 12:00 Nosy Faly Madagascar  0.1
          28 Dec 2020 12:00 Ambato Madagascar  0.1
          26 Dec 2020 10:00 Ampanakana Madagascar  0.1
          26 Dec 2020 19:00 Anoromby Madagascar  0.1
          26 Dec 2020 19:00 Fananehana Madagascar  0.1
          26 Dec 2020 20:00 Fahambahy Madagascar  0.1
          26 Dec 2020 20:00 Tampolo Madagascar  0.1
          26 Dec 2020 22:00 Tanambe Madagascar  0.1
          26 Dec 2020 17:00 Ambatoharana Madagascar  0.1
          29 Dec 2020 17:00 Antandrokomby Madagascar  0.1
          28 Dec 2020 09:00 Soahanina Madagascar  0.1
          29 Dec 2020 17:00 Ankatrafay Madagascar  0.1
          29 Dec 2020 10:00 Onara Madagascar  0.1
          29 Dec 2020 11:00 Antsafy Madagascar  0.1
          26 Dec 2020 18:00 Mandrony Madagascar  0.1
          28 Dec 2020 08:00 Ambalatsingy Madagascar  0.1
          28 Dec 2020 08:00 Ambodibonara Madagascar  0.1
          28 Dec 2020 08:00 Tsaratanana Madagascar  0.1
          28 Dec 2020 08:00 Ampasindava Madagascar  0.1
          28 Dec 2020 20:00 Namorre Mozambique  0.1
          29 Dec 2020 04:00 Moebase Mozambique  0.1
          29 Dec 2020 04:00 Murrumuana Mozambique  0.1
          26 Dec 2020 19:00 Ambaramidada Madagascar  0.1
          28 Dec 2020 12:00 Antanamazava Madagascar  0.1
          28 Dec 2020 12:00 Antanimandry Madagascar  0.1
          26 Dec 2020 19:00 Manambolosy Madagascar  0.1
          26 Dec 2020 22:00 Vohilava Madagascar  0.1
          26 Dec 2020 22:00 Ambodifototra Madagascar  0.1
          26 Dec 2020 22:00 Lohatrozona Madagascar  0.1
          29 Dec 2020 16:00 Morondava Madagascar  0.1
          28 Dec 2020 10:00 Ankerefo Madagascar  0.1
          29 Dec 2020 09:00 Marovazha Madagascar  0.1
          29 Dec 2020 09:00 Belavenoka Madagascar  0.1
          29 Dec 2020 09:00 Ankerefo Madagascar  0.1
          28 Dec 2020 12:00 Manampatra Madagascar  0.1
          28 Dec 2020 10:00 Vilamatsa Madagascar  0.1
          29 Dec 2020 13:00 Tomodo Mozambique  0.1
          28 Dec 2020 10:00 Voalavo Madagascar  0.1
          26 Dec 2020 18:00 Bejongoro Madagascar  0.1
          26 Dec 2020 18:00 Ampandrano Madagascar  0.1
          26 Dec 2020 18:00 Marovato Madagascar  0.1
          26 Dec 2020 18:00 Ananalava Madagascar  0.1
          26 Dec 2020 18:00 Ampasimpilily Madagascar  0.1
          28 Dec 2020 12:00 Anjiabe Madagascar  0.1
          29 Dec 2020 16:00 Belo-sur-Mer Madagascar  0.1
          26 Dec 2020 23:00 Antsikafoka Madagascar  0.1
          26 Dec 2020 18:00 Fararano Madagascar  0.1
          26 Dec 2020 18:00 Ambanisanjo Madagascar  0.1
          25 Dec 2020 03:00 Antalavia Madagascar  0.1
          28 Dec 2020 19:00 Andranovoribe Madagascar  0.1
          26 Dec 2020 18:00 Andrafialava Madagascar  0.1
          29 Dec 2020 08:00 Marofototra Madagascar  0.1
          28 Dec 2020 07:00 Analalava Madagascar  0.1
          29 Dec 2020 06:00 Raraga Mozambique  0.1
          29 Dec 2020 00:00 Napito Mozambique  0.1
          29 Dec 2020 02:00 Mutadua Mozambique  0.1
          24 Dec 2020 22:00 Maintimbato Madagascar  0.1
          26 Dec 2020 08:00 Anjiamalandy Madagascar  0.1
          29 Dec 2020 18:00 Chiloane Mozambique  0.1
          28 Dec 2020 13:00 Andrafia Madagascar  0.1
          28 Dec 2020 07:00 Antaribao Madagascar  0.1
          28 Dec 2020 07:00 Ankinganifahatelo Madagascar  0.1
          28 Dec 2020 13:00 Ambatoxavavy Madagascar  0.1
          29 Dec 2020 16:00 Ankiliabo Madagascar  0.1
          26 Dec 2020 23:00 Mahambo Madagascar  0.1