Overall Green alert Tropical Cyclone for CHALANE-20
in Mozambique, Zimbabwe, Madagascar, Botswana
26 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 0.6 m (30 Dec 08:00 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 0.6 m n.a. 0.5
    Overall 111 km/h 0.6 m n.a. 0.5

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

    TOP

    Wind

      83 km/h Current Max.

      Up to 8.8 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 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
        Green 4 26 Dec 2020 06:00 83 5.5 million No people Madagascar, Mozambique, Zimbabwe
        Green 5 26 Dec 2020 18:00 83 8.8 million No people Madagascar, Mozambique, Zimbabwe, Botswana

        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
          		 4 26 Dec 2020 06:00 Tropical storm 65 no people 210000 people -16.1, 52.4
          GREEN
          		 5 26 Dec 2020 18:00 Tropical storm 65 no people 6.7 million people -17.6, 49.7
          GREEN
          		 5 27 Dec 2020 06:00 Tropical depression 56 no people no people -18.2, 47.7 Madagascar
          GREEN
          		 5 27 Dec 2020 18:00 Tropical depression 46 no people no people -19.3, 45.5 Madagascar
          GREEN
          		 5 28 Dec 2020 06:00 Tropical depression 56 no people no people -20.4, 43.6
          GREEN
          		 5 28 Dec 2020 18:00 Tropical storm 65 no people no people -20.8, 42
          GREEN
          		 5 29 Dec 2020 18:00 Tropical storm 83 no people 700000 people -20.8, 38
          GREEN
          		 5 30 Dec 2020 18:00 Tropical storm 65 no people 1.7 million people -20.9, 32.8 Mozambique
          GREEN
          		 5 31 Dec 2020 18:00 Tropical depression 56 no people no people -21.2, 27.4 Botswana
          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
          Botswana

          Provinces

          Region Province Country
          Toamasina Madagascar
          Mahajanga Madagascar
          Antsiranana Madagascar
          Antananarivo Madagascar
          Sofala Mozambique
          Inhambane Mozambique
          Manica Mozambique
          Gaza Mozambique
          Manicaland Zimbabwe
          Masvingo Zimbabwe
          Midlands Zimbabwe
          Matabeleland South Zimbabwe
          Central Botswana
          North-East Botswana

          Populated places

          Name Region Province Country City class Population
          Fenerive Toamasina Madagascar City -
          Tamatave Toamasina Madagascar City 200000 people
          Mananara Toamasina Madagascar City 41000 people
          Moramanga Toamasina Madagascar City 29000 people
          Antananarivo Antananarivo Madagascar Capital 1.4 million people
          Francistown North-East Botswana City 89000 people
          Tonotha Central Botswana City -

          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)
          Sainte Marie SMS 2 Civ. Paved No 3300
          Toamasina TMM 6 Civ. Paved Yes 7200
          Ambatondrazaka WAM 766 Civ. Unpaved No 4200
          Mananara Nord WMR 3 Civ. Paved No 4100
          Andriamena WAD unknown 0
          Antananarivo Ivato TNR 1279 Civ. Paved Yes 10100
          Antananarivo Arivonimamo 1450 0
          Vila Franca Do Save 30 0
          Hippo Valley 433 0
          Buffalo Range BFO 433 Civ. Paved Yes 5100
          Francistown FRW 1001 Civ. Paved Yes 7200

          Ports

          Name LOCODE Country
          Foulpointe Madagascar
          Fenerive Madagascar
          Port Sainte Marie Madagascar
          Tamatave (Toamasina) MGTMM Madagascar
          Saint Mary Island Madagascar
          Andevoranto Madagascar
          Mananara MGWMR Madagascar
          Bartolomeo Diaz Mozambique
          Nova Mambone Mozambique

          Dams

          Reservoir Dam Name River Year
          Antanifotsy Antanifotsy 1958
          Sahamaloto Sahamaloto 1958
          Mantasoa Varahina-Nord 1938
          Tsiazompaniry Varahina-Sud 1956
          Lake McDougal Manjirenji Chiredzi 1967
          Esquilingwe Muturikwi 1961
          Bangala Mutirikwi 1963
          Tokwe Weir Tokwe 1965
          Manyuchi 2 Mwenezi 1989
          Ripple Creek Bubi 1964
          Pioneer Umtsabezi 1968
          Tamba Tshabi n/a
          Silalabuhwa Insiza 1967
          Doddie Burn Sibizini 1955
          Makashi Bubi 1969
          Blanket Mchabezi 1952
          Tuli Makwe Tuli 1966
          Antelope Shasani 1971
          Thornville Sibankatzi 1967
          Ingwesi Ingwesi 1968
          Shashe Shashe 1972
          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.

          ...

          TOP

          StormSurge

          0.6 m

          The maximum Storm surge height is  0.6m in Bartolomeu Dias, Mozambique. This height is estimated for 30 Dec 2020 08:00 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 (193 locations). Calculation based on advisory number 5 of 26 Dec 2020 18:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          30 Dec 2020 08:00 Bartolomeu Dias Mozambique  0.6
          30 Dec 2020 08:00 Chiloane Mozambique  0.6
          30 Dec 2020 08:00 Jo Mozambique  0.5
          30 Dec 2020 08:00 Dinguiduane Mozambique  0.5
          30 Dec 2020 08:00 Laisse Mozambique  0.4
          25 Dec 2020 14:00 Ambodiatafa Madagascar  0.4
          26 Dec 2020 07:00 Ilomotro Madagascar  0.3
          26 Dec 2020 07:00 Andohonko Madagascar  0.3
          26 Dec 2020 07:00 Antsisikala Madagascar  0.3
          30 Dec 2020 09:00 Natalia Mozambique  0.3
          25 Dec 2020 13:00 Mahalevona Madagascar  0.3
          26 Dec 2020 19:00 Foulpointe Madagascar  0.3
          25 Dec 2020 14:00 Maroantsetra Madagascar  0.3
          25 Dec 2020 14:00 Andranofotsy Madagascar  0.3
          29 Dec 2020 18:00 Maconharumo Mozambique  0.3
          29 Dec 2020 18:00 Amado Mozambique  0.3
          26 Dec 2020 19:00 Mahatsara Madagascar  0.3
          26 Dec 2020 12:00 Fadrina Madagascar  0.3
          26 Dec 2020 08:00 Ankazomalemy Madagascar  0.3
          25 Dec 2020 14:00 Anantoraka Madagascar  0.2
          26 Dec 2020 19:00 Taratasy Madagascar  0.2
          26 Dec 2020 17:00 Bobasakoa Madagascar  0.2
          26 Dec 2020 19:00 Manehoko Madagascar  0.2
          26 Dec 2020 17:00 Ambodibonara Madagascar  0.2
          26 Dec 2020 17:00 Tanambao Madagascar  0.2
          26 Dec 2020 17:00 Anjabe Madagascar  0.2
          26 Dec 2020 17:00 Andranomena Madagascar  0.2
          26 Dec 2020 17:00 Andranofotsy Madagascar  0.2
          29 Dec 2020 18:00 Chimuaza Mozambique  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 20:00 Ambatomainty Madagascar  0.2
          25 Dec 2020 19:00 Andrangazaha Madagascar  0.2
          26 Dec 2020 19:00 Namahoaka Madagascar  0.2
          29 Dec 2020 17:00 Nhangau Mozambique  0.2
          29 Dec 2020 17:00 Damiao Mozambique  0.2
          29 Dec 2020 17:00 Chamba Mozambique  0.2
          29 Dec 2020 17:00 Beira Mozambique  0.2
          30 Dec 2020 09:00 Inhassoro Mozambique  0.2
          26 Dec 2020 19:00 Antanimandry Madagascar  0.2
          26 Dec 2020 07:00 Soanierana Ivongo Madagascar  0.2
          25 Dec 2020 14:00 Voloina Madagascar  0.2
          26 Dec 2020 14:00 Fandrarazana Madagascar  0.2
          26 Dec 2020 17:00 Vohilava Madagascar  0.2
          26 Dec 2020 20:00 Andanivato Madagascar  0.2
          26 Dec 2020 20:00 Ambatojoby Madagascar  0.2
          26 Dec 2020 20:00 Andramy Madagascar  0.2
          26 Dec 2020 20:00 Marotaola Madagascar  0.2
          29 Dec 2020 17:00 Tama Mozambique  0.2
          29 Dec 2020 17:00 Jonja Mozambique  0.2
          25 Dec 2020 14:00 Tampolo Madagascar  0.2
          26 Dec 2020 06:00 Ambariomena Madagascar  0.2
          26 Dec 2020 08:00 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 19:00 Ambinanysahavary Madagascar  0.2
          26 Dec 2020 06:00 Antananabe Madagascar  0.2
          26 Dec 2020 19:00 Madirotelo Madagascar  0.2
          26 Dec 2020 06:00 Marokitrana Madagascar  0.2
          26 Dec 2020 06:00 Ampiambesa Madagascar  0.2
          26 Dec 2020 19:00 Bevoay Madagascar  0.2
          26 Dec 2020 06:00 Antetezampolaka Madagascar  0.2
          29 Dec 2020 18:00 Manometimay Madagascar  0.2
          29 Dec 2020 18:00 Morondava Madagascar  0.2
          26 Dec 2020 20:00 Vohitsara Madagascar  0.2
          26 Dec 2020 20:00 Ambodimanga Madagascar  0.2
          30 Dec 2020 09:00 Asneira Mozambique  0.2
          30 Dec 2020 09:00 Caulino Mozambique  0.2
          26 Dec 2020 10:00 Ambanisanjo Madagascar  0.2
          26 Dec 2020 10:00 Ambatobe Madagascar  0.2
          26 Dec 2020 17:00 Ambodifototra Madagascar  0.2
          26 Dec 2020 16:00 Lonkintsy Madagascar  0.2
          26 Dec 2020 16:00 Lokintsy Madagascar  0.2
          26 Dec 2020 17:00 Lohatrozona Madagascar  0.2
          26 Dec 2020 13:00 Tanambe Madagascar  0.2
          26 Dec 2020 06:00 Maromokotra Madagascar  0.2
          29 Dec 2020 17:00 Chofandicho Mozambique  0.2
          30 Dec 2020 10:00 Castigo Mozambique  0.2
          25 Dec 2020 13:00 Rantabe Madagascar  0.2
          25 Dec 2020 14:00 Fampotabe Madagascar  0.2
          29 Dec 2020 19:00 Ampanihy Madagascar  0.2
          29 Dec 2020 18:00 Reharaka Madagascar  0.2
          29 Dec 2020 18:00 Antserananbondro Madagascar  0.2
          29 Dec 2020 18:00 Ankirijibe Madagascar  0.2
          29 Dec 2020 18:00 Kivalo Est Madagascar  0.2
          26 Dec 2020 07:00 Antanifatsy Madagascar  0.2
          29 Dec 2020 18:00 Manomba Madagascar  0.2
          26 Dec 2020 19:00 Ananalava Madagascar  0.2
          29 Dec 2020 16:00 Bingue Mozambique  0.2
          29 Dec 2020 18:00 Panaca Mozambique  0.2
          29 Dec 2020 18:00 Belo-sur-Mer Madagascar  0.2
          26 Dec 2020 07:00 Fararano Madagascar  0.1
          26 Dec 2020 07:00 Antsorokaka Madagascar  0.1
          26 Dec 2020 08:00 Antalavia Madagascar  0.1
          25 Dec 2020 14:00 Rantranavona Madagascar  0.1
          25 Dec 2020 18:00 Ampasimbe Madagascar  0.1
          25 Dec 2020 20:00 Manakalana Madagascar  0.1
          25 Dec 2020 21:00 Anjanozana Madagascar  0.1
          29 Dec 2020 18:00 Maintirano Madagascar  0.1
          29 Dec 2020 18:00 Manampea Madagascar  0.1
          28 Dec 2020 14:00 Antsamaka Madagascar  0.1
          26 Dec 2020 19:00 Fenerive Madagascar  0.1
          28 Dec 2020 14:00 Andopitaly Madagascar  0.1
          28 Dec 2020 14:00 Ambozaka Madagascar  0.1
          29 Dec 2020 12:00 Mulia Mozambique  0.1
          26 Dec 2020 20:00 Antetezambaro Madagascar  0.1
          26 Dec 2020 06:00 Mandrony Madagascar  0.1
          30 Dec 2020 10:00 Vilanculos Mozambique  0.1
          26 Dec 2020 21:00 Antanamazava Madagascar  0.1
          25 Dec 2020 20:00 Anoromby Madagascar  0.1
          26 Dec 2020 11:00 Manompana Madagascar  0.1
          29 Dec 2020 18:00 Ankazobe Madagascar  0.1
          29 Dec 2020 19:00 Belailay Madagascar  0.1
          26 Dec 2020 20:00 Ambodihariha Madagascar  0.1
          26 Dec 2020 18:00 Analalava Madagascar  0.1
          29 Dec 2020 16:00 Rupia Mozambique  0.1
          29 Dec 2020 16:00 Machesse Mozambique  0.1
          30 Dec 2020 10:00 Mariano Mozambique  0.1
          26 Dec 2020 07:00 Mahatsaborimaika Madagascar  0.1
          26 Dec 2020 20:00 Nosy Faly Madagascar  0.1
          26 Dec 2020 20:00 Ambato Madagascar  0.1
          26 Dec 2020 17:00 Ambaramidada Madagascar  0.1
          26 Dec 2020 06:00 Ampanakana Madagascar  0.1
          26 Dec 2020 07:00 Maintimbato Madagascar  0.1
          25 Dec 2020 21:00 Andilamboahangy Madagascar  0.1
          25 Dec 2020 17:00 Anaovandrano Madagascar  0.1
          29 Dec 2020 19:00 Andemba Madagascar  0.1
          29 Dec 2020 18:00 Tambohorano Madagascar  0.1
          29 Dec 2020 18:00 Ambatomilahy Madagascar  0.1
          29 Dec 2020 18:00 Ankirijibe Madagascar  0.1
          29 Dec 2020 19:00 Antandrokomby Madagascar  0.1
          29 Dec 2020 19:00 Ankatrafay Madagascar  0.1
          29 Dec 2020 11:00 Ocone Mozambique  0.1
          29 Dec 2020 14:00 Quelimane do Sal Mozambique  0.1
          29 Dec 2020 14:00 Inhangulue Mozambique  0.1
          29 Dec 2020 14:00 Mendozo Mozambique  0.1
          29 Dec 2020 14:00 Magromane Mozambique  0.1
          26 Dec 2020 19:00 Mahambo Madagascar  0.1
          26 Dec 2020 19:00 Andrafialava Madagascar  0.1
          29 Dec 2020 14:00 Nhamatamanga Mozambique  0.1
          30 Dec 2020 09:00 Afonso Mozambique  0.1
          30 Dec 2020 09:00 Catine Mozambique  0.1
          28 Dec 2020 14:00 Ankiliabo Madagascar  0.1
          30 Dec 2020 10:00 Xetoquica Mozambique  0.1
          30 Dec 2020 10:00 China Mozambique  0.1
          30 Dec 2020 10:00 Mahoa Mozambique  0.1
          26 Dec 2020 08:00 Fananehana Madagascar  0.1
          25 Dec 2020 18:00 Antakobola Madagascar  0.1
          25 Dec 2020 18:00 Analanampotsy Madagascar  0.1
          25 Dec 2020 20:00 Manambolosy Madagascar  0.1
          25 Dec 2020 20:00 Ivontaka Madagascar  0.1
          25 Dec 2020 20:00 Seranambe Madagascar  0.1
          26 Dec 2020 08:00 Vinanivao Madagascar  0.1
          28 Dec 2020 14:00 Antanambao Samaka Madagascar  0.1
          28 Dec 2020 14:00 Antohgo Madagascar  0.1
          29 Dec 2020 14:00 Barra Mozambique  0.1
          26 Dec 2020 18:00 Bejongoro Madagascar  0.1
          26 Dec 2020 18:00 Ampasibe Madagascar  0.1
          29 Dec 2020 11:00 Vila do Chinde Mozambique  0.1
          25 Dec 2020 18:00 Manambato Madagascar  0.1
          25 Dec 2020 20:00 Antanambe Madagascar  0.1
          29 Dec 2020 18:00 Ankoakala Madagascar  0.1
          26 Dec 2020 19:00 Marofinaritra Madagascar  0.1
          26 Dec 2020 19:00 Ankarefo Madagascar  0.1
          26 Dec 2020 19:00 Mahatsara Madagascar  0.1
          26 Dec 2020 20:00 Mailakapasy Madagascar  0.1
          29 Dec 2020 18:00 Ambato Madagascar  0.1
          26 Dec 2020 08:00 Mahavanona Madagascar  0.1
          26 Dec 2020 08:00 Ampasina Madagascar  0.1
          25 Dec 2020 20:00 Fahambahy Madagascar  0.1
          25 Dec 2020 20:00 Tampolo Madagascar  0.1
          25 Dec 2020 20:00 Mananara Madagascar  0.1
          25 Dec 2020 20:00 Vatobe Madagascar  0.1
          25 Dec 2020 21:00 Ambatofitarafana Madagascar  0.1
          25 Dec 2020 21:00 Ambodimanga Madagascar  0.1
          26 Dec 2020 07:00 Ambatoharana Madagascar  0.1
          26 Dec 2020 21:00 Soahanina Madagascar  0.1
          26 Dec 2020 10:00 Anjiamalandy Madagascar  0.1
          26 Dec 2020 18:00 Antsikafoka Madagascar  0.1
          26 Dec 2020 06:00 Ampandrano Madagascar  0.1
          26 Dec 2020 06:00 Marovato Madagascar  0.1
          26 Dec 2020 06:00 Ampasimpilily Madagascar  0.1
          30 Dec 2020 14:00 Nova Sofala Mozambique  0.1
          26 Dec 2020 18:00 Anjiabe Madagascar  0.1
          29 Dec 2020 18:00 Kamendriky Madagascar  0.1
          26 Dec 2020 18:00 Ambatoxavavy Madagascar  0.1
          25 Dec 2020 20:00 Antanetilava Madagascar  0.1
          26 Dec 2020 18:00 Ampombilava Madagascar  0.1
          26 Dec 2020 19:00 Tamatave Madagascar  0.1
          29 Dec 2020 11:00 Mutiba Mozambique  0.1
          28 Dec 2020 14:00 Moravano Madagascar  0.1
          29 Dec 2020 18:00 Morombe Madagascar  0.1