Overall Green alert Tropical Cyclone for CHENESO-23
in Madagascar

Impact

Tropical Cyclone CHENESO-23 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source WMO/RSMC La Réunion - Meteo France
Exposed countries Madagascar
Exposed population No people in Category 1 or higher
Maximum wind speed 169 km/h
Maximum storm surge 0.2 m (19 Jan 16:00 UTC)
Vulnerability High (Madagascar)
Landfall between
19 Jan 2023 04:00 - 19 Jan 2023 16:00

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 95 km/h 0.2 m n.a. 0.5
Overall 169 km/h 0.2 m n.a. 0.5

Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track) based on WMO/RSMC La Réunion - Meteo France impact

Joint Pilot Activity: EC-JRC,WMO/RSMC La Réunion-Meteo France

Wind

95 km/h Current Max.

Up to 4.1 million people in Tropical Storm strength or higher (see SSHS)

Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm or higher
Population in
Cat 1. or higher
Countries
Green 1 18 Jan 2023 04:00 95 4.1 million No people Madagascar

Bulletin Timeline

Alert Date (UTC) Category
(SSHS)
Max winds
(km/h)
Population in
Cat.1 or higher
Population in
Tropical Storm
or higher
Category
(WMO/RSMC) **
Max winds
(km/h)
(WMO/RSMC)
Location (lat, lon) Countries
GREEN
1 18 Jan 2023 04:00 Tropical storm 63 no people no people Tropical Depression 56 -13.8, 55.8
GREEN
1 18 Jan 2023 16:00 Tropical storm 74 no people 70000 people Moderate Tropical Storm 65 -13.8, 52.9
GREEN
1 19 Jan 2023 04:00 Tropical storm 95 no people 1.1 million people Moderate Tropical Storm 83 -14.1, 51.2
GREEN
1 19 Jan 2023 16:00 Tropical storm 84 no people 1.5 million people Moderate Tropical Storm 74 -14.6, 50.2 Madagascar
GREEN
1 20 Jan 2023 04:00 Tropical storm 63 no people 1.2 million people Overland Depression 56 -15.2, 49.3 Madagascar
GREEN
1 20 Jan 2023 16:00 Tropical storm 63 no people 1.7 million people Overland Depression 56 -16.1, 48.7 Madagascar
GREEN
1 21 Jan 2023 04:00 Tropical storm 63 no people 2.1 million people Overland Depression 56 -17.1, 48.7 Madagascar
GREEN
1 21 Jan 2023 16:00 Tropical storm 63 no people 1.5 million people Overland Depression 56 -18, 49 Madagascar
GREEN
1 22 Jan 2023 04:00 Tropical storm 63 no people 740000 people Overland Depression 56 -18.8, 49.4 Madagascar
GREEN
1 22 Jan 2023 16:00 Tropical storm 74 no people 190000 people Moderate Tropical Storm 65 -19.4, 49.8
GREEN
1 23 Jan 2023 04:00 Tropical storm 95 no people no people Moderate Tropical Storm 83 -20.2, 50.3
**
Tropical disturbance/Weak low pressure area/Remnant low (Vmax < 51 km/h), see WMO
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 Population in Tropical Storm or higher strength
Madagascar 4.1 million people

Provinces

Region Province Country Population in Tropical Storm or higher strength
Antsiranana Madagascar 840000 people
Toamasina Madagascar 2.6 million people
Mahajanga Madagascar 680000 people

Populated places

Name Region Province Country City class Population
Antalaha Antsiranana Madagascar City 34000 people
Sambava Antsiranana Madagascar City 31000 people
Andapa Antsiranana Madagascar City 20000 people
Maroantsetra Toamasina Madagascar City 24000 people
Mandritsara Mahajanga Madagascar City -
Fenerive Toamasina Madagascar City -
Tamatave Toamasina Madagascar City 200000 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
Sambava SVB 6 Civ. Paved No 5900
Andapa ZWA 473 Civ. Paved No 4100
Doany DOA unknown 0
Maroantsetra WMN 4 Civ. Paved No 4200
Mandritsara WMA 307 Civ. Unpaved No 3700
Befandriana WBD 250 Civ. Unpaved No 4100
Toamasina TMM 6 Civ. Paved Yes 7200
Ambatondrazaka WAM 766 Civ. Unpaved No 4200
Vatomandry VAT 12 Civ. Unpaved No 3800
Atsinanana ILK 10 Civ. Unpaved No 3200

Ports

Name LOCODE Country
Antataha MGANM Madagascar
Sambava MGSVB Madagascar
Maroantsetra MGWMN Madagascar
Fenerive Madagascar
Foulpointe Madagascar
Tamatave (Toamasina) MGTMM Madagascar
Andevoranto Madagascar
Vatomandry MGVAT Madagascar

Dams

Reservoir Dam Name River Year
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

0.2 m

The maximum Storm surge height is  0.2m in Manambia, Madagascar. This height is estimated for 19 Jan 2023 16:00 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 (121 locations). Calculation based on advisory number 1 of 18 Jan 2023 04:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)
19 Jan 2023 16:00 Manambia Madagascar  0.2
19 Jan 2023 16:00 Anantoraka Madagascar  0.2
19 Jan 2023 16:00 Maroantsetra Madagascar  0.2
19 Jan 2023 17:00 Voloina Madagascar  0.2
19 Jan 2023 17:00 Andranofotsy Madagascar  0.2
19 Jan 2023 16:00 Ambodipont-Sahana Madagascar  0.2
19 Jan 2023 14:00 Mahalevona Madagascar  0.2
19 Jan 2023 16:00 Andrapengy Madagascar  0.2
22 Jan 2023 01:00 Tampina Madagascar  0.2
21 Jan 2023 07:00 Manehoko Madagascar  0.2
21 Jan 2023 07:00 Antanimandry Madagascar  0.2
21 Jan 2023 07:00 Ambodibonara Madagascar  0.2
21 Jan 2023 07:00 Tanambao Madagascar  0.2
21 Jan 2023 07:00 Anjabe Madagascar  0.2
21 Jan 2023 07:00 Andranomena Madagascar  0.2
21 Jan 2023 07:00 Andranofotsy Madagascar  0.2
19 Jan 2023 16:00 Ilomotro Madagascar  0.2
19 Jan 2023 16:00 Andohonko Madagascar  0.2
19 Jan 2023 17:00 Rantabe Madagascar  0.2
21 Jan 2023 11:00 Bobasakoa Madagascar  0.2
22 Jan 2023 00:00 Andanivato Madagascar  0.2
22 Jan 2023 00:00 Ambatojoby Madagascar  0.2
22 Jan 2023 00:00 Andramy Madagascar  0.2
22 Jan 2023 00:00 Marotaola Madagascar  0.2
21 Jan 2023 07:00 Fadrina Madagascar  0.2
19 Jan 2023 16:00 Amborimalana Madagascar  0.2
22 Jan 2023 01:00 Ampanotoamaizina Madagascar  0.2
19 Jan 2023 15:00 Ambanizana Madagascar  0.2
19 Jan 2023 00:00 Ambodiatafa Madagascar  0.2
21 Jan 2023 22:00 Bevoay Madagascar  0.2
21 Jan 2023 22:00 Madirotelo Madagascar  0.2
22 Jan 2023 04:00 Ananalava Madagascar  0.2
19 Jan 2023 14:00 Benjana Madagascar  0.2
19 Jan 2023 16:00 Maintimbato Madagascar  0.2
21 Jan 2023 06:00 Antanamazava Madagascar  0.2
21 Jan 2023 06:00 Ambatomainty Madagascar  0.2
19 Jan 2023 16:00 Anoromby Madagascar  0.2
19 Jan 2023 14:00 Antongompatatra Madagascar  0.2
19 Jan 2023 14:00 Bemanevika Madagascar  0.2
19 Jan 2023 14:00 Soanierana Ivongo Madagascar  0.2
21 Jan 2023 22:00 Marokitrana Madagascar  0.2
21 Jan 2023 06:00 Ambatobe Madagascar  0.1
19 Jan 2023 14:00 Antohamaro Madagascar  0.1
19 Jan 2023 17:00 Ampaha Madagascar  0.1
19 Jan 2023 14:00 Andrangazaha Madagascar  0.1
22 Jan 2023 01:00 Vavony Madagascar  0.1
19 Jan 2023 16:00 Fananehana Madagascar  0.1
19 Jan 2023 15:00 Tampolo Madagascar  0.1
21 Jan 2023 05:00 Ambato Madagascar  0.1
19 Jan 2023 17:00 Ankazomalemy Madagascar  0.1
19 Jan 2023 15:00 Farahalana Madagascar  0.1
21 Jan 2023 22:00 Ankarefo Madagascar  0.1
21 Jan 2023 14:00 Anjiabe Madagascar  0.1
19 Jan 2023 16:00 Manakalana Madagascar  0.1
19 Jan 2023 16:00 Mahavanona Madagascar  0.1
19 Jan 2023 17:00 Ampasina Madagascar  0.1
19 Jan 2023 16:00 Antakobola Madagascar  0.1
19 Jan 2023 16:00 Analanampotsy Madagascar  0.1
19 Jan 2023 16:00 Ampasimbe Madagascar  0.1
21 Jan 2023 22:00 Maromokotra Madagascar  0.1
22 Jan 2023 04:00 Analalava Madagascar  0.1
19 Jan 2023 15:00 Antalavia Madagascar  0.1
19 Jan 2023 16:00 Manambolosy Madagascar  0.1
19 Jan 2023 16:00 Fahambahy Madagascar  0.1
19 Jan 2023 16:00 Tampolo Madagascar  0.1
19 Jan 2023 14:00 Ampana Kanana Madagascar  0.1
19 Jan 2023 17:00 Ambinany Madagascar  0.1
21 Jan 2023 21:00 Marofinaritra Madagascar  0.1
22 Jan 2023 02:00 Kalomalala Madagascar  0.1
22 Jan 2023 01:00 Ambila-Lemaitso Madagascar  0.1
21 Jan 2023 14:00 Mailakapasy Madagascar  0.1
19 Jan 2023 16:00 Manompana Madagascar  0.1
19 Jan 2023 16:00 Anjahamarina Madagascar  0.1
21 Jan 2023 15:00 Antetezambaro Madagascar  0.1
21 Jan 2023 15:00 Ambodihariha Madagascar  0.1
19 Jan 2023 15:00 Rantranavona Madagascar  0.1
19 Jan 2023 16:00 Ambanisanjo Madagascar  0.1
19 Jan 2023 16:00 Andilamboahangy Madagascar  0.1
19 Jan 2023 16:00 Mananara Madagascar  0.1
19 Jan 2023 18:00 Antalaha Madagascar  0.1
22 Jan 2023 04:00 Bejongoro Madagascar  0.1
22 Jan 2023 04:00 Ampandrano Madagascar  0.1
21 Jan 2023 22:00 Andrafialava Madagascar  0.1
19 Jan 2023 16:00 Manambato Madagascar  0.1
19 Jan 2023 16:00 Antanambe Madagascar  0.1
19 Jan 2023 16:00 Fandrarazana Madagascar  0.1
19 Jan 2023 16:00 Anorotsangana Madagascar  0.1
21 Jan 2023 14:00 Antsahampano Madagascar  0.1
21 Jan 2023 06:00 Mahambo Madagascar  0.1
21 Jan 2023 06:00 Antsikafoka Madagascar  0.1
19 Jan 2023 16:00 Ambohitralanana Madagascar  0.1
21 Jan 2023 18:00 Tamatave Madagascar  0.1
21 Jan 2023 09:00 Mahatsara Madagascar  0.1
21 Jan 2023 09:00 Foulpointe Madagascar  0.1
19 Jan 2023 19:00 Ratsianarana Madagascar  0.1
19 Jan 2023 19:00 Ambodivato Madagascar  0.1
21 Jan 2023 22:00 Mandrony Madagascar  0.1
22 Jan 2023 03:00 Ampasibe Madagascar  0.1
21 Jan 2023 05:00 Ambatoxavavy Madagascar  0.1
21 Jan 2023 05:00 Andrafia Madagascar  0.1
21 Jan 2023 06:00 Nosy Faly Madagascar  0.1
21 Jan 2023 06:00 Ambaramidada Madagascar  0.1
19 Jan 2023 14:00 Fampotabe Madagascar  0.1
19 Jan 2023 17:00 Ampanakana Madagascar  0.1
19 Jan 2023 17:00 Fararano Madagascar  0.1
19 Jan 2023 17:00 Antsorokaka Madagascar  0.1
19 Jan 2023 14:00 Sambava Madagascar  0.1
21 Jan 2023 15:00 Reharaka Madagascar  0.1
21 Jan 2023 15:00 Soahanina Madagascar  0.1
19 Jan 2023 16:00 Ivontaka Madagascar  0.1
19 Jan 2023 16:00 Seranambe Madagascar  0.1
19 Jan 2023 17:00 Fenerive Madagascar  0.1
21 Jan 2023 20:00 Mahatsara Madagascar  0.1
22 Jan 2023 02:00 Amboditafara Madagascar  0.1
19 Jan 2023 16:00 Vatobe Madagascar  0.1
19 Jan 2023 16:00 Ambodimanga Madagascar  0.1
19 Jan 2023 15:00 Anaovandrano Madagascar  0.1
19 Jan 2023 15:00 Anjanozana Madagascar  0.1
21 Jan 2023 08:00 Namahoaka Madagascar  0.1
22 Jan 2023 01:00 Ampitabe Madagascar  0.1
22 Jan 2023 02:00 Vohitramposina Madagascar  0.1