Overall Orange alert Tropical Cyclone for OCKHI-17
in India, Maldives, Sri Lanka
30 Nov 2017 00 UTC
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  • GDACS JTWC
Impact Single TC
Impact based on all weather systems in the area

Impact

    Tropical Cyclone OCKHI-17 can have a medium humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

    Meteorological source GDACS
    Glide number: TC-2017-000172-IND
    Exposed countries India, Maldives, Sri Lanka
    Exposed population No people in Category 1 or higher
    Maximum wind speed 176 km/h
    Maximum storm surge 0.4 m (30 Nov 02:00 UTC)
    Vulnerability High (India)

    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 93 km/h 0.4 m n.a. 1.5
    Overall 176 km/h 0.4 m n.a. 1.5

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

    TOP

    Wind

      93 km/h Current Max.

      Up to 23.3 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
        Orange 1 29 Nov 2017 18:00 102 25.3 million 2 thousand Sri Lanka, India
        Orange 2 30 Nov 2017 00:00 93 23.3 million 2 thousand India, Sri Lanka

        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
          ORANGE
          		 1 29 Nov 2017 18:00 Tropical storm 65 no people 14.1 million people 6.6, 78.8 India
          ORANGE
          		 2 30 Nov 2017 00:00 Tropical storm 74 no people 17.6 million people 7.5, 77.3 India
          ORANGE
          		 2 30 Nov 2017 12:00 Tropical storm 93 no people 13.7 million people 8.3, 75.6 India
          GREEN
          		 2 01 Dec 2017 00:00 Tropical storm 111 no people 60000 people 9, 74.1 India
          GREEN
          		 2 01 Dec 2017 12:00 Category 1 130 2500 people 62000 people 9.7, 72.5 India
          GREEN
          		 2 02 Dec 2017 00:00 Category 1 139 no people 32000 people 10.6, 71 India
          GREEN
          		 2 03 Dec 2017 00:00 Category 2 157 no people no people 12.8, 68.7
          GREEN
          		 2 04 Dec 2017 00:00 Category 2 167 no people no people 14.7, 67.6
          GREEN
          		 2 05 Dec 2017 00:00 Category 1 148 no people no people 17.6, 67.9
          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
          India
          Sri Lanka

          Provinces

          Region Province Country
          Tamil Nadu India
          Kerala India
          North Western Sri Lanka
          Western Sri Lanka
          Southern Sri Lanka
          Lakshadweep India

          Populated places

          Name Region Province Country City class Population
          Nagercoil Tamil Nadu India City 210000 people
          Trivandrum Kerala India City -
          Kallidaikurichchi Tamil Nadu India City 25000 people
          Mel Palaiyam Tamil Nadu India City -
          Tiruneveli Tamil Nadu India City -
          Srivaikuntam Tamil Nadu India City 16000 people
          Tiruchchendur Tamil Nadu India City 30000 people
          Palayankottai Tamil Nadu India City -
          Tenkasi Tamil Nadu India City 63000 people
          Quilon Kerala India City -
          Alleppey Kerala India City -
          Kottayam Kerala India City 59000 people
          Negombo Western Sri Lanka City 140000 people
          Colombo Western Sri Lanka Capital 610000 people
          Tripunittura Kerala India City -
          Wattala Western Sri Lanka City 30000 people
          Mattancheri Kerala India City -
          Ragama Western Sri Lanka City 27000 people
          Moratuwa Western Sri Lanka City 180000 people
          Kotte Western Sri Lanka City 120000 people
          Panadura Western Sri Lanka City -
          Cochin Kerala India Major city -
          Gampaha Western Sri Lanka City 9300 people
          Wadduwa Western Sri Lanka City -
          Kalutara Western Sri Lanka City 38000 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)
          Thiruvananthapuram International TRV 5 Civ. Paved Yes 11100
          Colombo Bandaranayake International CMB 9 Civ. Paved Yes 10900
          Cochin 2 Civ. Paved Yes 6000
          Colombo Ratmalana RML 7 Civ. Paved Yes 6000
          Katukurunda 3 0
          Agatti AGX 4 Civ. Paved No 3900

          Ports

          Name LOCODE Country
          Cape Comorin INCCN India
          Kilachel India
          Nagercoil India
          Trivandrum India
          Nemam India
          Tiruchendir India
          Quilon INQUI India
          Needakara INNEE India
          Alleppey INALF India
          Negombo Sri Lanka
          Colombo LKCMB Sri Lanka
          Cochin INCOK India
          Moratuwa Sri Lanka
          Kalutara Sri Lanka
          Ambalangoda Sri Lanka
          Minicoy India
          Kalpeni Island India
          Androth Island India
          Kavaratti Island India
          Amini Island India
          Kitian Island India

          Dams

          Reservoir Dam Name River Year
          Kallada Kallada n/a
          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.

          ...

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          StormSurge

          0.4 m

          The maximum Storm surge height is  0.4m in Kattumavadi, India. This height is estimated for 30 Nov 2017 02:00 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 (40 locations). Calculation based on advisory number 2 of 30 Nov 2017 00:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          30 Nov 2017 02:00 Kattumavadi India  0.4
          30 Nov 2017 02:00 Manamelkudi India  0.4
          30 Nov 2017 02:00 Ammapatam India  0.4
          30 Nov 2017 03:00 Tondi India  0.3
          30 Nov 2017 03:00 Kottaippattanam India  0.3
          30 Nov 2017 03:00 Kilakarai India  0.3
          30 Nov 2017 03:00 Muttupettai India  0.3
          30 Nov 2017 03:00 Panalkkulam India  0.3
          29 Nov 2017 22:00 Irumeni India  0.3
          30 Nov 2017 03:00 Rameswaram India  0.2
          30 Nov 2017 04:00 Pamban India  0.2
          30 Nov 2017 03:00 Cape Comorin India  0.2
          30 Nov 2017 03:00 Vijayapati India  0.2
          30 Nov 2017 00:00 Kayalpatnam India  0.2
          30 Nov 2017 03:00 Sikkal India  0.2
          30 Nov 2017 05:00 Kadiapattanam India  0.2
          30 Nov 2017 04:00 Thoothukkudi India  0.2
          30 Nov 2017 03:00 Erukkandurai India  0.2
          30 Nov 2017 15:00 Quilon India  0.2
          30 Nov 2017 03:00 Kulasekharapatnam India  0.1
          30 Nov 2017 00:00 Tiruchendur India  0.1
          30 Nov 2017 04:00 Melmandai India  0.1
          30 Nov 2017 04:00 Vembar India  0.1
          30 Nov 2017 06:00 Kurichchikadu Sri Lanka  0.1
          30 Nov 2017 05:00 Kayts Sri Lanka  0.1
          30 Nov 2017 05:00 Agastiswaram India  0.1
          30 Nov 2017 10:00 Vilinjam India  0.1
          30 Nov 2017 12:00 Thiruvananthapuram India  0.1
          30 Nov 2017 03:00 Periathullay India  0.1
          30 Nov 2017 10:00 Puvar India  0.1
          30 Nov 2017 05:00 Delft Centre Sri Lanka  0.1
          30 Nov 2017 15:00 Anjengo India  0.1
          30 Nov 2017 20:00 Kayankulam India  0.1
          30 Nov 2017 05:00 Kolachel India  0.1
          30 Nov 2017 08:00 Taingapatam India  0.1
          30 Nov 2017 15:00 Varkkallai India  0.1
          30 Nov 2017 23:00 Alleppey India  0.1
          30 Nov 2017 22:00 Ambalapulai India  0.1
          30 Nov 2017 23:00 Turavur India  0.1
          01 Dec 2017 08:00 Mattancheri India  0.1