Overall Orange alert Tropical Cyclone for OCKHI-17
in India, Maldives, Sri Lanka
29 Nov 2017 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 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 0.6 m (30 Nov 12:00 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 102 km/h 0.6 m n.a. 1.5
    Overall 176 km/h 0.6 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

      102 km/h Current Max.

      Up to 25.3 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

        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
          		 1 30 Nov 2017 06:00 Tropical storm 83 no people 19.6 million people 7.3, 77.1 India
          ORANGE
          		 1 30 Nov 2017 18:00 Tropical storm 102 no people 13.5 million people 8.1, 75.4 India
          GREEN
          		 1 01 Dec 2017 06:00 Category 1 120 1200 people 65000 people 8.8, 73.9 India
          GREEN
          		 1 01 Dec 2017 18:00 Category 1 139 2500 people 66000 people 9.6, 72.4 India
          GREEN
          		 1 02 Dec 2017 18:00 Category 2 157 no people no people 11.5, 69.4
          GREEN
          		 1 03 Dec 2017 18:00 Category 2 167 no people no people 13.9, 67.6
          GREEN
          		 1 04 Dec 2017 18:00 Category 1 148 no people no people 16.8, 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
          Sri Lanka
          India

          Provinces

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

          Populated places

          Name Region Province Country City class Population
          Colombo Western Sri Lanka Capital 610000 people
          Moratuwa Western Sri Lanka City 180000 people
          Panadura Western Sri Lanka City -
          Wadduwa Western Sri Lanka City -
          Kotte Western Sri Lanka City 120000 people
          Wattala Western Sri Lanka City 30000 people
          Kalutara Western Sri Lanka City 38000 people
          Ragama Western Sri Lanka City 27000 people
          Negombo Western Sri Lanka City 140000 people
          Gampaha Western Sri Lanka City 9300 people
          Tiruchchendur Tamil Nadu India City 30000 people
          Kayalpatnam Tamil Nadu India City -
          Nagercoil Tamil Nadu India City 210000 people
          Srivaikuntam Tamil Nadu India City 16000 people
          Tuticorin Tamil Nadu India City -
          Mel Palaiyam Tamil Nadu India City -
          Palayankottai Tamil Nadu India City -
          Tiruneveli Tamil Nadu India City -
          Kallidaikurichchi Tamil Nadu India City 25000 people
          Trivandrum Kerala India City -
          Kovilpatti Tamil Nadu India City 90000 people
          Tenkasi Tamil Nadu India City 63000 people
          Quilon Kerala India City -
          Kottayam Kerala India City 59000 people
          Alleppey Kerala India City -
          Tripunittura Kerala India City -
          Mattancheri Kerala India City -
          Cochin Kerala India Major 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)
          Colombo Ratmalana RML 7 Civ. Paved Yes 6000
          Katukurunda 3 0
          Colombo Bandaranayake International CMB 9 Civ. Paved Yes 10900
          Tuticorin Southwest 39 0
          Thiruvananthapuram International TRV 5 Civ. Paved Yes 11100
          Kovilpatti 99 0
          Cochin 2 Civ. Paved Yes 6000
          Agatti AGX 4 Civ. Paved No 3900

          Ports

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

          Dams

          Reservoir Dam Name River Year
          Kallada Kallada n/a
          Periyar Periyar 1897
          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

          0.6 m

          The maximum Storm surge height is  0.6m in Kattumavadi, India. This height is estimated for 30 Nov 2017 12:00 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 (44 locations). Calculation based on advisory number 1 of 29 Nov 2017 18:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          30 Nov 2017 12:00 Kattumavadi India  0.6
          30 Nov 2017 11:00 Manamelkudi India  0.5
          30 Nov 2017 11:00 Ammapatam India  0.5
          30 Nov 2017 11:00 Panalkkulam India  0.5
          30 Nov 2017 11:00 Tondi India  0.5
          30 Nov 2017 11:00 Kottaippattanam India  0.5
          30 Nov 2017 10:00 Kilakarai India  0.4
          30 Nov 2017 10:00 Muttupettai India  0.4
          30 Nov 2017 10:00 Irumeni India  0.4
          30 Nov 2017 11:00 Rameswaram India  0.3
          30 Nov 2017 10:00 Pamban India  0.3
          30 Nov 2017 12:00 Sikkal India  0.2
          30 Nov 2017 14:00 Kolachel India  0.2
          30 Nov 2017 09:00 Cape Comorin India  0.2
          30 Nov 2017 16:00 Puvar India  0.2
          30 Nov 2017 12:00 Thoothukkudi India  0.2
          30 Nov 2017 12:00 Melmandai India  0.2
          30 Nov 2017 12:00 Vembar India  0.2
          30 Nov 2017 14:00 Kayts Sri Lanka  0.2
          30 Nov 2017 10:00 Vijayapati India  0.2
          30 Nov 2017 08:00 Kayalpatnam India  0.2
          30 Nov 2017 15:00 Kurichchikadu Sri Lanka  0.2
          30 Nov 2017 13:00 Kadiapattanam India  0.2
          30 Nov 2017 10:00 Kulasekharapatnam India  0.2
          30 Nov 2017 11:00 Erukkandurai India  0.2
          30 Nov 2017 09:00 Tiruchendur India  0.2
          30 Nov 2017 13:00 Delft Centre Sri Lanka  0.2
          30 Nov 2017 12:00 Agastiswaram India  0.2
          30 Nov 2017 16:00 Vilinjam India  0.2
          30 Nov 2017 18:00 Thiruvananthapuram India  0.2
          30 Nov 2017 11:00 Periathullay India  0.1
          30 Nov 2017 22:00 Quilon India  0.1
          30 Nov 2017 21:00 Anjengo India  0.1
          30 Nov 2017 16:00 Taingapatam India  0.1
          30 Nov 2017 11:00 Tirumullaivasal India  0.1
          30 Nov 2017 11:00 Kaveripattanam India  0.1
          30 Nov 2017 17:00 Kiranchi Sri Lanka  0.1
          01 Dec 2017 02:00 Kayankulam India  0.1
          30 Nov 2017 22:00 Varkkallai India  0.1
          30 Nov 2017 12:00 Negombo Sri Lanka  0.1
          30 Nov 2017 13:00 Wattala Sri Lanka  0.1
          30 Nov 2017 13:00 Ja-Ela Sri Lanka  0.1
          01 Dec 2017 03:00 Ambalapulai India  0.1
          02 Dec 2017 03:00 Quilandi India  0.1