Overall Green alert Tropical Cyclone for JOBO-21
in Tanzania, Seychelles
23 Apr 2021 00 UTC
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  • GDACS JTWC
Impact Single TC
Impact based on all weather systems in the area

Impact

    Tropical Cyclone JOBO-21 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

    Meteorological source GDACS
    Exposed countries Tanzania, Seychelles
    Exposed population No people in Category 1 or higher
    Maximum wind speed 111 km/h
    Maximum storm surge 0.3 m (25 Apr 08:00 UTC)
    Vulnerability Medium (Tanzania)
    Landfall between
    25 Apr 2021 00:00 - 26 Apr 2021 00:00
    in Tanzania

    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 111 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 6.4 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 21 Apr 2021 00:00 130 580 thousand No people Seychelles, Tanzania
        Green 2 21 Apr 2021 12:00 139 1.6 million Few people Seychelles
        Green 3 22 Apr 2021 00:00 93 1.2 million No people Seychelles, Tanzania
        Green 4 22 Apr 2021 12:00 83 750 thousand No people Seychelles, Tanzania
        Green 5 23 Apr 2021 00:00 83 6.4 million No people Seychelles, Tanzania

        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 21 Apr 2021 00:00 Tropical storm 83 no people <1000 people -10, 48.8
          GREEN
          		 2 21 Apr 2021 12:00 Tropical storm 111 no people <1000 people -9.7, 47.8
          GREEN
          		 3 22 Apr 2021 00:00 Tropical storm 93 no people <1000 people -10.4, 46.5
          GREEN
          		 4 22 Apr 2021 12:00 Tropical storm 83 no people no people -9.9, 45.1
          GREEN
          		 5 23 Apr 2021 00:00 Tropical storm 83 no people no people -9.2, 43.9
          GREEN
          		 5 23 Apr 2021 12:00 Tropical storm 74 no people no people -8.7, 42.6
          GREEN
          		 5 24 Apr 2021 00:00 Tropical storm 74 no people 56000 people -8.1, 41.5
          GREEN
          		 5 24 Apr 2021 12:00 Tropical storm 65 no people 5.7 million people -7.8, 40.7
          GREEN
          		 5 25 Apr 2021 00:00 Tropical storm 65 no people 6.4 million people -7.4, 39.9
          GREEN
          		 5 26 Apr 2021 00:00 Tropical depression 37 no people no people -7, 38.5 Tanzania
          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
          Seychelles
          Tanzania

          Provinces

          Region Province Country
          Seychelles Seychelles
          Lindi Tanzania
          Pwani Tanzania
          Dar es Salaam Tanzania
          Zanzibar Central/South Tanzania
          Zanzibar Urban/West Tanzania
          Morogoro Tanzania

          Populated places

          Name Region Province Country City class Population
          Dar es Salaam Dar-es-Salaam Tanzania Major city 2.7 million 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)
          Assumption Island 3 Civ. Paved No 3900
          Mafia MFA 18 Civ. Unpaved No 5200
          Dar Es Salaam DAR 55 Civ. Paved Yes 9800
          Ngerengere 226 0

          Ports

          Name LOCODE Country
          Assumption Island Seychelles
          Cosmoledo Island Seychelles
          Astove Island Seychelles
          Kilondoni Tanzania
          Kisiju Tanzania
          Mjimwema Terminal Tanzania
          Dar-es-Salaam TZDAR Tanzania
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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 Kisiju, Tanzania. This height is estimated for 25 Apr 2021 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 (58 locations). Calculation based on advisory number 5 of 23 Apr 2021 00:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          25 Apr 2021 08:00 Kisiju Tanzania  0.3
          25 Apr 2021 07:00 Dondo Tanzania  0.3
          25 Apr 2021 07:00 Mpafu Tanzania  0.3
          25 Apr 2021 07:00 Kutani Tanzania  0.3
          24 Apr 2021 07:00 Meronvi Mozambique  0.3
          24 Apr 2021 00:00 Quissengue Mozambique  0.3
          25 Apr 2021 07:00 Magawa Tanzania  0.3
          25 Apr 2021 08:00 Msindaji Tanzania  0.2
          24 Apr 2021 17:00 Libambai Mozambique  0.2
          25 Apr 2021 01:00 Mchungu Tanzania  0.2
          25 Apr 2021 01:00 Nyambati Tanzania  0.2
          25 Apr 2021 01:00 Kiombani Tanzania  0.2
          24 Apr 2021 17:00 Vila de Mocimboa da Praia Mozambique  0.2
          25 Apr 2021 01:00 Kiechuru Tanzania  0.2
          25 Apr 2021 00:00 Mbwera Tanzania  0.2
          23 Apr 2021 21:00 Tavari Mozambique  0.2
          25 Apr 2021 01:00 Jaja Tanzania  0.2
          24 Apr 2021 10:00 Bawala Mozambique  0.2
          24 Apr 2021 20:00 Olumbe Mozambique  0.2
          23 Apr 2021 13:00 Pangane Mozambique  0.2
          24 Apr 2021 15:00 Mwera Tanzania  0.2
          24 Apr 2021 02:00 Maganja Mozambique  0.2
          25 Apr 2021 01:00 Pombwe Tanzania  0.2
          24 Apr 2021 21:00 Jimbo Tanzania  0.2
          25 Apr 2021 05:00 Somanga Tanzania  0.2
          25 Apr 2021 07:00 Buuni Village Tanzania  0.2
          25 Apr 2021 00:00 Quiterajo Mozambique  0.2
          22 Apr 2021 14:00 Andrafia Madagascar  0.1
          23 Apr 2021 08:00 Uzi Tanzania  0.1
          23 Apr 2021 08:00 Kibele Tanzania  0.1
          24 Apr 2021 21:00 Kipingwe Tanzania  0.1
          22 Apr 2021 14:00 Ampombilava Madagascar  0.1
          22 Apr 2021 14:00 Andriana Madagascar  0.1
          22 Apr 2021 13:00 Ambato Madagascar  0.1
          22 Apr 2021 14:00 Antanamazava Madagascar  0.1
          24 Apr 2021 16:00 Chole Tanzania  0.1
          22 Apr 2021 14:00 Anjiabe Madagascar  0.1
          22 Apr 2021 15:00 Ampasimena Madagascar  0.1
          24 Apr 2021 19:00 Mkarangama Tanzania  0.1
          22 Apr 2021 13:00 Nosy Faly Madagascar  0.1
          24 Apr 2021 02:00 Quiwia Mozambique  0.1
          25 Apr 2021 08:00 Matapatapa Tanzania  0.1
          22 Apr 2021 14:00 Ambatoxavavy Madagascar  0.1
          23 Apr 2021 13:00 Marere Mozambique  0.1
          23 Apr 2021 13:00 Lucete Mozambique  0.1
          25 Apr 2021 00:00 Kilindoni Tanzania  0.1
          24 Apr 2021 09:00 Palma Mozambique  0.1
          24 Apr 2021 09:00 Boala Mozambique  0.1
          25 Apr 2021 03:00 Mboamaji Tanzania  0.1
          25 Apr 2021 03:00 Bandarini Tanzania  0.1
          23 Apr 2021 08:00 Fumba Tanzania  0.1
          24 Apr 2021 02:00 Quionga Mozambique  0.1
          23 Apr 2021 18:00 Msimbati Tanzania  0.1
          22 Apr 2021 14:00 Ambaramidada Madagascar  0.1
          24 Apr 2021 21:00 Kirongwe Tanzania  0.1
          25 Apr 2021 00:00 Kilwa Masoko Tanzania  0.1
          24 Apr 2021 06:00 Ibo Mozambique  0.1
          24 Apr 2021 19:00 Mwambo Tanzania  0.1