Overall Green alert Tropical Cyclone for GRETEL-20
in Norfolk Island, New Caledonia, New Zealand
15 Mar 2020 00 UTC
click on to select bulletin time
  • GDACS JTWC
Impact Single TC
Impact based on all weather systems in the area

Impact

    Tropical Cyclone GRETEL-20 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

    Meteorological source GDACS
    Exposed countries Norfolk Island, New Caledonia, New Zealand
    Exposed population No people in Category 1 or higher
    Maximum wind speed 102 km/h
    Maximum storm surge 0.4 m (15 Mar 17:00 UTC)
    Vulnerability Medium (New Caledonia)

    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 0.4 m n.a. 0.5
    Overall 102 km/h 0.4 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

      102 km/h Current Max.

      Up to 280000 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 14 Mar 2020 18:00 111 280 thousand No people New Caledonia, Norfolk Island
        Green 2 15 Mar 2020 00:00 102 280 thousand No people New Caledonia, Norfolk Island, New Zealand

        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 14 Mar 2020 18:00 Tropical storm 74 no people 270000 people -18.9, 160 New Caledonia
          GREEN
          		 2 15 Mar 2020 00:00 Tropical storm 93 no people 280000 people -20.2, 161.7 New Caledonia
          GREEN
          		 2 15 Mar 2020 12:00 Tropical storm 102 no people 280000 people -23.3, 165 New Caledonia
          GREEN
          		 2 16 Mar 2020 00:00 Tropical storm 102 no people 5300 people -26.7, 169 New Caledonia
          GREEN
          		 2 16 Mar 2020 12:00 Tropical storm 93 no people 2200 people -29.6, 172.9 New Zealand
          GREEN
          		 2 17 Mar 2020 00:00 Tropical storm 93 no people no people -31.3, 177.2
          GREEN
          		 2 18 Mar 2020 00:00 Tropical storm 83 no people no people -33, -173.8
          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
          New Caledonia
          Norfolk I.
          New Zealand

          Provinces

          Region Province Country
          New Caledonia New Caledonia
          Norfolk I. Norfolk Island
          Northland New Zealand

          Populated places

          Name Region Province Country City class Population
          Comm. du Mont-Dore New Caledonia City -
          Nouméa New Caledonia Capital 83000 people
          Kingston Norfolk Island Capital <1000 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)
          Belep BMY unknown 0
          Poum PUV unknown 0
          Koumac KOC 13 Civ. Paved No 3600
          Kone KNQ 7 Civ. Paved No 3200
          Hienghene HNG unknown 0
          Mueo PDC unknown 0
          Touho TOU 3 Civ. Paved No 3600
          Houailou / Nesson HLU 3 Civ. Paved No 3200
          La Tontouta NOU 16 Civ. Paved Yes 10600
          Ouvea Ouloup UVE 7 Civ. Paved No 3600
          Noumea / Magenta GEA 3 Civ. Paved Yes 4100
          Wanaham LIF 28 Civ. Paved No 3600
          Ile Ouen IOU unknown 0
          Ile Des Pins Moue ILP 96 Civ. Paved No 3600
          Mare la Roche MEE 43 Civ. Paved No 3200
          Norfolk Island International NLK 113 Civ. Paved Yes 6500

          Ports

          Name LOCODE Country
          Babouillat New Caledonia
          Chesterfield Iles Coral Sea Islands
          Nepoui NCNEP New Caledonia
          Baie Ugue NCBUG New Caledonia
          Baie de Poro NCPOR New Caledonia
          Kouaoua NCKOU New Caledonia
          Thialis NCTHI New Caledonia
          Ducos NCDUS New Caledonia
          Noumea NCNOU New Caledonia
          We New Caledonia
          Kuto New Caledonia
          Tadine New Caledonia
          Matthew Island New Caledonia
          Kingston Norfolk Island
          Three Kings Island New Zealand
          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 Kaala-Gomen, New Caledonia. This height is estimated for 15 Mar 2020 17:00 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 (112 locations). Calculation based on advisory number 2 of 15 Mar 2020 00:00:00 UTC. (Simulation using 0.5 minute resolution)

          Alert Date (UTC) Name Country Storm surge height (m)
          15 Mar 2020 17:00 Kaala-Gomen New Caledonia  0.4
          15 Mar 2020 04:00 Arama New Caledonia  0.3
          15 Mar 2020 17:00 Ouaco New Caledonia  0.3
          15 Mar 2020 20:00 Kuto New Caledonia  0.2
          15 Mar 2020 20:00 Vao New Caledonia  0.2
          15 Mar 2020 21:00 Gadji New Caledonia  0.2
          15 Mar 2020 16:00 Paagoumene New Caledonia  0.2
          14 Mar 2020 22:00 Pam New Caledonia  0.2
          15 Mar 2020 15:00 Tiabet New Caledonia  0.2
          15 Mar 2020 06:00 Poum-Plage New Caledonia  0.2
          15 Mar 2020 06:00 Poum New Caledonia  0.2
          15 Mar 2020 16:00 Lekia New Caledonia  0.2
          15 Mar 2020 16:00 Fayaoue New Caledonia  0.2
          15 Mar 2020 18:00 Wadrilla New Caledonia  0.2
          15 Mar 2020 16:00 Ognahu New Caledonia  0.2
          15 Mar 2020 22:00 Tomo New Caledonia  0.2
          15 Mar 2020 21:00 Ouara New Caledonia  0.2
          17 Mar 2020 02:00 Marsden Point New Zealand  0.2
          17 Mar 2020 02:00 Whangarei Heads New Zealand  0.2
          17 Mar 2020 02:00 Taurikura New Zealand  0.2
          15 Mar 2020 19:00 Noumea New Caledonia  0.2
          15 Mar 2020 19:00 Comm. du Mont-Dore New Caledonia  0.2
          15 Mar 2020 19:00 Nouville New Caledonia  0.2
          15 Mar 2020 21:00 Prony New Caledonia  0.2
          15 Mar 2020 23:00 Bouloupari New Caledonia  0.2
          17 Mar 2020 02:00 Ruakaka New Zealand  0.2
          14 Mar 2020 22:00 Panane New Caledonia  0.1
          14 Mar 2020 22:00 Mouane New Caledonia  0.1
          15 Mar 2020 03:00 Ono New Caledonia  0.1
          15 Mar 2020 03:00 Wala New Caledonia  0.1
          17 Mar 2020 00:00 Waipu New Zealand  0.1
          15 Mar 2020 01:00 Port Alma Australia  0.1
          14 Mar 2020 22:00 Houone New Caledonia  0.1
          15 Mar 2020 22:00 Goro New Caledonia  0.1
          15 Mar 2020 22:00 Wapan New Caledonia  0.1
          16 Mar 2020 04:00 Kingston Norfolk Island  0.1
          17 Mar 2020 03:00 Ngunguru New Zealand  0.1
          17 Mar 2020 03:00 Tutukaka New Zealand  0.1
          17 Mar 2020 03:00 Paetawai New Zealand  0.1
          17 Mar 2020 03:00 Whananaki South New Zealand  0.1
          17 Mar 2020 03:00 Whananaki New Zealand  0.1
          15 Mar 2020 18:00 Oundjo New Caledonia  0.1
          15 Mar 2020 22:00 Plum New Caledonia  0.1
          16 Mar 2020 18:00 Merita New Zealand  0.1
          14 Mar 2020 21:00 Pairome New Caledonia  0.1
          15 Mar 2020 01:00 Farnborough Australia  0.1
          15 Mar 2020 01:00 Yeppoon Australia  0.1
          15 Mar 2020 01:00 Emu Park Australia  0.1
          17 Mar 2020 03:00 Whangamumu New Zealand  0.1
          17 Mar 2020 03:00 Whangaruru New Zealand  0.1
          17 Mar 2020 03:00 Whangaruru South New Zealand  0.1
          17 Mar 2020 03:00 Whangaruru North New Zealand  0.1
          17 Mar 2020 03:00 Helena Bay New Zealand  0.1
          17 Mar 2020 03:00 Matapouri New Zealand  0.1
          15 Mar 2020 01:00 Keppel Sands Australia  0.1
          17 Mar 2020 00:00 Waipu Cove New Zealand  0.1
          17 Mar 2020 03:00 Algies Bay New Zealand  0.1
          17 Mar 2020 03:00 Tawharanui New Zealand  0.1
          14 Mar 2020 22:00 Bweo New Caledonia  0.1
          15 Mar 2020 21:00 Dumbea New Caledonia  0.1
          15 Mar 2020 21:00 Paita New Caledonia  0.1
          15 Mar 2020 19:00 Nde New Caledonia  0.1
          16 Mar 2020 23:00 Matauri Bay New Zealand  0.1
          16 Mar 2020 23:00 Tepene New Zealand  0.1
          16 Mar 2020 22:00 Mangawhai New Zealand  0.1
          17 Mar 2020 03:00 Kawau Island New Zealand  0.1
          17 Mar 2020 02:00 Whangateau New Zealand  0.1
          17 Mar 2020 02:00 Leigh New Zealand  0.1
          15 Mar 2020 03:00 Umukuri New Zealand  0.1
          15 Mar 2020 03:00 Braeburn New Zealand  0.1
          15 Mar 2020 03:00 Lower Moutere New Zealand  0.1
          15 Mar 2020 03:00 Riwaka New Zealand  0.1
          15 Mar 2020 03:00 Totaranui New Zealand  0.1
          15 Mar 2020 03:00 Motueka New Zealand  0.1
          15 Mar 2020 03:00 Port Motueka New Zealand  0.1
          15 Mar 2020 03:00 Mahana New Zealand  0.1
          15 Mar 2020 03:00 Mapua New Zealand  0.1
          15 Mar 2020 03:00 Tahunanui New Zealand  0.1
          15 Mar 2020 03:00 Port Nelson New Zealand  0.1
          15 Mar 2020 03:00 Nelson New Zealand  0.1
          15 Mar 2020 03:00 Atawhai New Zealand  0.1
          15 Mar 2020 03:00 Wakapuaka New Zealand  0.1
          15 Mar 2020 03:00 Glenduan New Zealand  0.1
          15 Mar 2020 03:00 Hira New Zealand  0.1
          15 Mar 2020 03:00 Rangikura New Zealand  0.1
          15 Mar 2020 03:00 Mowhanau New Zealand  0.1
          15 Mar 2020 03:00 Kai Iwi Beach New Zealand  0.1
          15 Mar 2020 03:00 Rapanui New Zealand  0.1
          15 Mar 2020 03:00 Castlecliff New Zealand  0.1
          15 Mar 2020 03:00 Wanganui New Zealand  0.1
          15 Mar 2020 03:00 Foxton Beach New Zealand  0.1
          15 Mar 2020 03:00 Tangimoana New Zealand  0.1
          15 Mar 2020 03:00 Foxton New Zealand  0.1
          17 Mar 2020 01:00 Taraunui New Zealand  0.1
          17 Mar 2020 01:00 Rukuwai New Zealand  0.1
          17 Mar 2020 00:00 Pataua New Zealand  0.1
          17 Mar 2020 01:00 Manawaora New Zealand  0.1
          17 Mar 2020 01:00 Waikare New Zealand  0.1
          17 Mar 2020 01:00 Waihaha New Zealand  0.1
          17 Mar 2020 01:00 Rawhiti New Zealand  0.1
          17 Mar 2020 01:00 Punaruku New Zealand  0.1
          14 Mar 2020 21:00 Ometteux New Caledonia  0.1
          14 Mar 2020 21:00 Ponerihouen New Caledonia  0.1
          14 Mar 2020 21:00 Bayes New Caledonia  0.1
          16 Mar 2020 23:00 Purerua New Zealand  0.1
          16 Mar 2020 22:00 Arai Point New Zealand  0.1
          16 Mar 2020 22:00 Pakiri New Zealand  0.1
          15 Mar 2020 22:00 Saint-Louis New Caledonia  0.1
          16 Mar 2020 18:00 Lake Ohia New Zealand  0.1
          16 Mar 2020 23:00 Taemaro New Zealand  0.1
          16 Mar 2020 21:00 Waitangi New Zealand  0.1
          17 Mar 2020 01:00 Mahurangi New Zealand  0.1