Overall Green alert Tropical Cyclone for CHALANE-20
in Mozambique, Zimbabwe, Madagascar, Botswana

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 (JTWC)
Exposed countries Mozambique, Zimbabwe, Madagascar, Botswana
Exposed population No people in Category 1 or higher
Maximum wind speed 111 km/h
Maximum storm surge 1.1 m (30 Dec 05:00 UTC)
Vulnerability High (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
GDACS Current 83 km/h 1.1 m n.a. 0.5
GDACS Overall 111 km/h 1.1 m n.a. 0.5

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

Wind

83 km/h Current Max.

Up to 10.7 million people in Tropical storm (see SSHS)

Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm
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
Green 6 27 Dec 2020 06:00 93 10.9 million No people Madagascar, Mozambique, Zimbabwe
Orange 7 27 Dec 2020 18:00 120 11.5 million 100 thousand Mozambique
Orange 8 28 Dec 2020 06:00 120 11.3 million 560 thousand Mozambique, Zimbabwe
Green 9 28 Dec 2020 18:00 102 11.6 million No people Madagascar, Mozambique, Zimbabwe, Botswana
Green 10 29 Dec 2020 06:00 111 8.7 million No people Mozambique, Madagascar, Zimbabwe
Green 11 29 Dec 2020 18:00 111 8.9 million No people Mozambique, Zimbabwe, Madagascar
Green 12 30 Dec 2020 06:00 83 10.8 million No people Mozambique, Zimbabwe, Madagascar

Bulletin Timeline

Alert Date (UTC) Category Max winds
(km/h)
Population in
Tropical Storm
Population in
Cat.1 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 200000 people no people -16.1, 52.4
GREEN
5 26 Dec 2020 18:00 Tropical storm 65 6.7 million people no people -17.6, 49.7
GREEN
6 27 Dec 2020 06:00 Tropical depression 46 no people no people -18.1, 47.6 Madagascar
GREEN
7 27 Dec 2020 18:00 Tropical depression 56 140000 people no people -19.2, 45.6 Madagascar
GREEN
8 28 Dec 2020 06:00 Tropical storm 65 no people no people -20, 43.7
GREEN
9 28 Dec 2020 18:00 Tropical storm 74 no people no people -20, 41.6
GREEN
10 29 Dec 2020 06:00 Tropical storm 83 no people no people -19.6, 39.9
GREEN
11 29 Dec 2020 18:00 Tropical storm 111 1.1 million people no people -19.7, 37.7
GREEN
12 30 Dec 2020 06:00 Tropical storm 83 4.7 million people no people -19.4, 34.6 Mozambique
GREEN
12 30 Dec 2020 18:00 Tropical depression 56 no people no people -19.6, 31.7 Zimbabwe
GREEN
12 31 Dec 2020 06:00 Tropical depression 37 no people no people -20.1, 28.5 Zimbabwe
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.
Download:



Exposed population

Countries

Country
Mozambique
Zimbabwe
Madagascar

Provinces

Region Province Country Population
Sofala Mozambique 1.4 million people
Manica Mozambique 870000 people
Manicaland Zimbabwe 1.6 million people
Zambezia Mozambique 3.4 million people
Masvingo Zimbabwe 1 million people
Mashonaland East Zimbabwe 2.2 million people
Midlands Zimbabwe 1.6 million people
Mahajanga Madagascar 1.4 million people
Antananarivo Madagascar 4.3 million people
Toamasina Madagascar 1.8 million people
Antsiranana Madagascar 810000 people

Populated places

Name Region Province Country City class Population
Beira Sofala Mozambique Major city 520000 people
Chimoio Manica Mozambique City 250000 people
Mutare Manicaland Zimbabwe City 180000 people
Antananarivo Antananarivo Madagascar Capital 1.3 million people
Moramanga Toamasina Madagascar City 28000 people
Tamatave Toamasina Madagascar City 200000 people
Fenerive Toamasina Madagascar City -
Mananara Toamasina Madagascar City 41000 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)
Beira BEW 10 Civ. Paved Yes 7800
Inhaminga IMG unknown 0
Chimoio VPY 686 Civ. Paved No 7800
Luabo LBM unknown 0
Chinde INE unknown 0
Mutare UTA 1041 Priv. Paved No 3100
Chipinge CHJ unknown 0
Mutare Grand Reef 1019 Mil. Paved No 4100
Dorowa 892 0
Antananarivo Ivato TNR 1279 Civ. Paved Yes 10100
Andriamena WAD unknown 0
Ambatondrazaka WAM 766 Civ. Unpaved No 4200
Toamasina TMM 6 Civ. Paved Yes 7200
Sainte Marie SMS 2 Civ. Paved No 3300
Mananara Nord WMR 3 Civ. Paved No 4100

Ports

Name LOCODE Country
Beira MZBEW Mozambique
Chinde MZINE Mozambique
Vila Do Chinde Mozambique
Andevoranto Madagascar
Tamatave (Toamasina) MGTMM Madagascar
Fenerive Madagascar
Foulpointe Madagascar
Port Sainte Marie Madagascar
Mananara MGWMR Madagascar
Saint Mary Island Madagascar

Dams

Reservoir Dam Name River Year
Bue Maria Pungoe -99
Revue Chicamba Real Revue 1959
Ratelshoek Chibudzana 1985
Bangazaan Buzi 1987
Odzani Lake Odzani Odzani 1966
Smallbridge Odzani 1985
Ruti Nyazvidzi 1976
Siya Turgwe 1976
Nyatare Nyatare 1985
Sahamaloto Sahamaloto 1958
Antanifotsy Antanifotsy 1958

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.

...

StormSurge

1.1 m

The maximum Storm surge height is  1.1m in Nhangau, Mozambique. This height is estimated for 30 Dec 2020 05:00 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 (213 locations). Calculation based on advisory number 12 of 30 Dec 2020 06:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)
30 Dec 2020 05:00 Nhangau Mozambique  1.1
30 Dec 2020 05:00 Damiao Mozambique  1.1
30 Dec 2020 05:00 Chamba Mozambique  1.1
30 Dec 2020 05:00 Beira Mozambique  1.1
30 Dec 2020 05:00 Manica Mozambique  1.1
30 Dec 2020 05:00 Nova Sofala Mozambique  1.0
30 Dec 2020 04:00 Chofandicho Mozambique  1.0
30 Dec 2020 04:00 Panaca Mozambique  0.9
30 Dec 2020 03:00 Tama Mozambique  0.9
30 Dec 2020 03:00 Jonja Mozambique  0.9
30 Dec 2020 06:00 Chiloane Mozambique  0.7
30 Dec 2020 03:00 Bingue Mozambique  0.6
30 Dec 2020 02:00 Rupia Mozambique  0.5
28 Dec 2020 02:00 Ambozaka Madagascar  0.5
30 Dec 2020 02:00 Machesse Mozambique  0.5
30 Dec 2020 01:00 Maconharumo Mozambique  0.4
28 Dec 2020 02:00 Andopitaly Madagascar  0.4
28 Dec 2020 01:00 Moravano Madagascar  0.4
28 Dec 2020 01:00 Tamotamo Madagascar  0.3
28 Dec 2020 02:00 Antanambao Samaka Madagascar  0.3
28 Dec 2020 01:00 Soahazo Madagascar  0.3
28 Dec 2020 02:00 Andramasay Madagascar  0.3
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
29 Dec 2020 23:00 Amado Mozambique  0.3
30 Dec 2020 06:00 Bartolomeu Dias Mozambique  0.3
25 Dec 2020 13:00 Mahalevona Madagascar  0.3
26 Dec 2020 19:00 Mahatsara 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 23:00 Chimuaza Mozambique  0.3
25 Dec 2020 14:00 Anantoraka Madagascar  0.3
28 Dec 2020 01:00 Ankoadavo Madagascar  0.3
30 Dec 2020 06:00 Jo Mozambique  0.3
26 Dec 2020 12:00 Fadrina Madagascar  0.2
26 Dec 2020 18:00 Manehoko Madagascar  0.2
26 Dec 2020 19:00 Namahoaka Madagascar  0.2
30 Dec 2020 06:00 Laisse Mozambique  0.2
30 Dec 2020 06:00 Dinguiduane Mozambique  0.2
28 Dec 2020 07:00 Antohgo Madagascar  0.2
28 Dec 2020 02:00 Appontement Madagascar  0.2
26 Dec 2020 06:00 Ankazomalemy 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 19:00 Taratasy Madagascar  0.2
25 Dec 2020 19:00 Andrangazaha Madagascar  0.2
26 Dec 2020 18:00 Bobasakoa Madagascar  0.2
26 Dec 2020 18:00 Antanimandry 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
25 Dec 2020 14:00 Ambodiatafa Madagascar  0.2
26 Dec 2020 18:00 Andranofotsy Madagascar  0.2
30 Dec 2020 07:00 Natalia Mozambique  0.2
25 Dec 2020 14:00 Voloina Madagascar  0.2
25 Dec 2020 19:00 Soanierana Ivongo Madagascar  0.2
28 Dec 2020 07:00 Antserananbondro Madagascar  0.2
26 Dec 2020 19:00 Ambinanysahavary Madagascar  0.2
25 Dec 2020 14:00 Tampolo Madagascar  0.2
29 Dec 2020 06:00 Manampea Madagascar  0.2
28 Dec 2020 09:00 Manometimay Madagascar  0.2
28 Dec 2020 09:00 Morondava Madagascar  0.2
28 Dec 2020 07:00 Kivalo Est Madagascar  0.2
26 Dec 2020 06:00 Ambariomena 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 Marokitrana Madagascar  0.2
26 Dec 2020 06:00 Ampiambesa Madagascar  0.2
26 Dec 2020 18:00 Bevoay Madagascar  0.2
26 Dec 2020 06:00 Antetezampolaka Madagascar  0.2
26 Dec 2020 11:00 Ambatobe Madagascar  0.2
26 Dec 2020 17:00 Vohilava Madagascar  0.2
29 Dec 2020 08:00 Ampanihy Madagascar  0.2
29 Dec 2020 07:00 Ankazobe Madagascar  0.2
28 Dec 2020 10:00 Ankirijibe Madagascar  0.2
26 Dec 2020 09:00 Anorotsangana Madagascar  0.2
29 Dec 2020 09:00 Mulia Mozambique  0.2
29 Dec 2020 09:00 Barra Mozambique  0.2
26 Dec 2020 20:00 Vohitsara Madagascar  0.2
26 Dec 2020 20:00 Ambodimanga Madagascar  0.2
26 Dec 2020 18:00 Madirotelo 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
29 Dec 2020 08:00 Reharaka Madagascar  0.2
28 Dec 2020 09:00 Antsamaka Madagascar  0.2
29 Dec 2020 08:00 Manomba Madagascar  0.2
26 Dec 2020 06:00 Maromokotra Madagascar  0.2
29 Dec 2020 09:00 Vila do Chinde Mozambique  0.2
26 Dec 2020 10:00 Ambanisanjo Madagascar  0.2
25 Dec 2020 13:00 Rantabe Madagascar  0.2
25 Dec 2020 20:00 Fampotabe Madagascar  0.2
25 Dec 2020 19:00 Fandrarazana Madagascar  0.2
25 Dec 2020 20:00 Ambatoharana Madagascar  0.2
29 Dec 2020 08:00 Maintirano Madagascar  0.2
26 Dec 2020 07:00 Antanifatsy Madagascar  0.2
26 Dec 2020 19:00 Fenerive Madagascar  0.2
30 Dec 2020 07:00 Inhassoro Mozambique  0.2
30 Dec 2020 07:00 Caulino Mozambique  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 20:00 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 07:00 Tambohorano Madagascar  0.1
29 Dec 2020 07:00 Ambatomilahy Madagascar  0.1
29 Dec 2020 07:00 Ankirijibe Madagascar  0.1
29 Dec 2020 09:00 Belailay Madagascar  0.1
29 Dec 2020 06:00 Ankoakala Madagascar  0.1
29 Dec 2020 06:00 Ambato Madagascar  0.1
29 Dec 2020 08:00 Quelimane do Sal Mozambique  0.1
29 Dec 2020 08:00 Inhangulue Mozambique  0.1
29 Dec 2020 08:00 Mendozo Mozambique  0.1
29 Dec 2020 08:00 Magromane Mozambique  0.1
26 Dec 2020 06:00 Mandrony Madagascar  0.1
29 Dec 2020 08:00 Nhamatamanga Mozambique  0.1
29 Dec 2020 07:00 Mutiba Mozambique  0.1
26 Dec 2020 20:00 Antetezambaro Madagascar  0.1
30 Dec 2020 13:00 Xetoquica Mozambique  0.1
30 Dec 2020 13:00 China Mozambique  0.1
25 Dec 2020 20:00 Anoromby Madagascar  0.1
28 Dec 2020 05:00 Andemba Madagascar  0.1
29 Dec 2020 08:00 Antandrokomby Madagascar  0.1
29 Dec 2020 08:00 Ankatrafay Madagascar  0.1
29 Dec 2020 07:00 Antsafy Madagascar  0.1
29 Dec 2020 06:00 Kamendriky Madagascar  0.1
26 Dec 2020 19:00 Mahambo Madagascar  0.1
26 Dec 2020 18:00 Ananalava Madagascar  0.1
30 Dec 2020 08:00 Castigo Mozambique  0.1
26 Dec 2020 07:00 Mahatsaborimaika Madagascar  0.1
28 Dec 2020 12:00 Belo-sur-Mer Madagascar  0.1
29 Dec 2020 07:00 Caliua Mozambique  0.1
29 Dec 2020 07:00 Raraga Mozambique  0.1
26 Dec 2020 20:00 Ambodihariha Madagascar  0.1
26 Dec 2020 18:00 Nosy Faly 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
26 Dec 2020 11:00 Manompana Madagascar  0.1
25 Dec 2020 17:00 Vinanivao Madagascar  0.1
25 Dec 2020 17:00 Anaovandrano Madagascar  0.1
29 Dec 2020 07:00 Onara Madagascar  0.1
28 Dec 2020 11:00 Ankiliabo Madagascar  0.1
26 Dec 2020 19:00 Andanivato Madagascar  0.1
26 Dec 2020 19:00 Ambatojoby Madagascar  0.1
26 Dec 2020 19:00 Andramy Madagascar  0.1
26 Dec 2020 19:00 Marotaola Madagascar  0.1
26 Dec 2020 19:00 Ampandrano Madagascar  0.1
26 Dec 2020 18:00 Andrafialava Madagascar  0.1
26 Dec 2020 19:00 Marovato Madagascar  0.1
26 Dec 2020 18:00 Analalava Madagascar  0.1
26 Dec 2020 19:00 Ampasimpilily Madagascar  0.1
30 Dec 2020 07:00 Afonso Mozambique  0.1
30 Dec 2020 07:00 Catine Mozambique  0.1
30 Dec 2020 08:00 Vilanculos Mozambique  0.1
30 Dec 2020 12:00 Mahoa Mozambique  0.1
26 Dec 2020 18:00 Antanamazava Madagascar  0.1
26 Dec 2020 18:00 Ambatomainty Madagascar  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
28 Dec 2020 07:00 Soahanina Madagascar  0.1
29 Dec 2020 07:00 Ambalabao Madagascar  0.1
29 Dec 2020 07:00 Bevatry Madagascar  0.1
29 Dec 2020 07:00 Marovazha Madagascar  0.1
29 Dec 2020 07:00 Belavenoka Madagascar  0.1
29 Dec 2020 07:00 Ankerefo Madagascar  0.1
29 Dec 2020 08:00 Ocone Mozambique  0.1
26 Dec 2020 18:00 Bejongoro Madagascar  0.1
26 Dec 2020 18:00 Ampasibe Madagascar  0.1
29 Dec 2020 06:00 Tsilambana Madagascar  0.1
29 Dec 2020 06:00 Tomodo Mozambique  0.1
30 Dec 2020 07:00 Asneira Mozambique  0.1
25 Dec 2020 18:00 Manambato Madagascar  0.1
25 Dec 2020 20:00 Antanambe Madagascar  0.1
26 Dec 2020 18:00 Marofinaritra Madagascar  0.1
26 Dec 2020 18:00 Ankarefo Madagascar  0.1
26 Dec 2020 18:00 Mahatsara Madagascar  0.1
29 Dec 2020 07:00 Chululu Mozambique  0.1
26 Dec 2020 18:00 Ambato Madagascar  0.1
25 Dec 2020 18:00 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 10:00 Anjiamalandy Madagascar  0.1
26 Dec 2020 18:00 Antsikafoka Madagascar  0.1
29 Dec 2020 07:00 Marofototra Madagascar  0.1
29 Dec 2020 07:00 Voalavo Madagascar  0.1
30 Dec 2020 08:00 Mariano Mozambique  0.1
26 Dec 2020 18:00 Anjiabe 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
26 Dec 2020 18:00 Mailakapasy Madagascar  0.1
29 Dec 2020 06:00 Morrua Mozambique  0.1