Overall Red alert Tropical Cyclone for GITA-18
in Tonga

Impact

Tropical Cyclone GITA-18 can have a high humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GDACS (JTWC)
Exposed countries Tonga
Exposed population 80 thousand in Category 1 or higher
Maximum wind speed 231 km/h
Maximum storm surge 1.6 m (20 Feb 12:00 UTC)
Vulnerability Medium (Tonga)

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
GDACS Current 102 km/h n.a. n.a. 0.5
GDACS Overall 231 km/h 1.6 m n.a. 2.5

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

Wind

102 km/h Current

Up to 2.8 million people in Tropical storm (see SSHS)

Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm
Population in
Cat. 1 or higher
Countries
Orange 1 09 Feb 2018 00:00 120 390 thousand 80 thousand Tonga
Orange 2 09 Feb 2018 06:00 148 400 thousand 80 thousand Tonga
Orange 3 09 Feb 2018 12:00 148 930 thousand 80 thousand Tonga
Orange 4 09 Feb 2018 18:00 139 830 thousand 80 thousand Tonga
Orange 5 10 Feb 2018 00:00 139 820 thousand 80 thousand Tonga
Orange 6 10 Feb 2018 06:00 139 600 thousand 80 thousand Tonga
Orange 7 10 Feb 2018 12:00 130 670 thousand 80 thousand Tonga
Orange 8 10 Feb 2018 18:00 176 770 thousand 80 thousand Tonga
Green 9 11 Feb 2018 00:00 204 390 thousand Few people affected Niue, Tonga, American Samoa, Wallis and Futuna, Fiji
Red 10 11 Feb 2018 06:00 185 1.1 million 80 thousand Tonga
Red 11 11 Feb 2018 12:00 185 980 thousand 80 thousand Tonga
Red 12 11 Feb 2018 18:00 185 1.1 million 80 thousand Tonga
Red 13 12 Feb 2018 00:00 213 790 thousand 80 thousand Tonga
Red 14 12 Feb 2018 06:00 231 540 thousand 80 thousand Tonga
Red 15 12 Feb 2018 12:00 231 360 thousand 80 thousand Tonga
Green 16 12 Feb 2018 18:00 231 970 thousand 80 thousand Tonga
Green 17 13 Feb 2018 00:00 222 800 thousand 80 thousand Tonga
Green 18 13 Feb 2018 06:00 213 740 thousand 80 thousand Tonga
Green 19 13 Feb 2018 12:00 204 390 thousand 80 thousand Tonga
Green 20 13 Feb 2018 18:00 204 540 thousand 80 thousand Tonga
Green 21 14 Feb 2018 00:00 213 580 thousand 80 thousand Tonga
Green 22 14 Feb 2018 06:00 213 560 thousand 80 thousand Tonga
Green 23 14 Feb 2018 12:00 213 550 thousand 80 thousand Tonga
Green 24 14 Feb 2018 18:00 194 1.2 million 80 thousand Tonga
Green 25 15 Feb 2018 00:00 194 4 million 80 thousand Tonga
Green 26 15 Feb 2018 06:00 194 4.6 million 80 thousand Tonga
Green 27 15 Feb 2018 12:00 185 4.6 million 80 thousand Tonga
Green 28 15 Feb 2018 18:00 185 4.6 million 80 thousand Tonga
Green 29 16 Feb 2018 00:00 176 4.2 million 80 thousand Tonga
Green 30 16 Feb 2018 06:00 167 4.5 million 80 thousand Tonga
Green 31 16 Feb 2018 12:00 148 4.6 million 80 thousand Tonga
Green 32 16 Feb 2018 18:00 139 4.7 million 80 thousand Tonga
Green 33 17 Feb 2018 00:00 130 2.2 million 80 thousand Tonga
Green 34 17 Feb 2018 06:00 120 4.2 million 80 thousand Tonga
Green 35 17 Feb 2018 12:00 111 2.9 million 80 thousand Tonga
Green 36 17 Feb 2018 18:00 111 2.4 million 80 thousand Tonga
Green 37 18 Feb 2018 00:00 102 2.9 million 80 thousand Tonga
Green 38 18 Feb 2018 06:00 93 4.5 million 80 thousand Tonga
Green 39 18 Feb 2018 12:00 93 4.7 million 80 thousand Tonga
Green 40 18 Feb 2018 18:00 93 4.3 million 80 thousand Tonga
Green 41 19 Feb 2018 00:00 93 2.9 million 80 thousand Tonga
Green 42 19 Feb 2018 06:00 93 2.6 million 80 thousand Tonga
Green 43 19 Feb 2018 12:00 93 2.6 million 80 thousand Tonga
Green 44 19 Feb 2018 18:00 102 2.9 million 80 thousand Tonga

Bulletin Timeline

Alert Date (UTC) Category Max winds
(km/h)
Population in
Tropical Storm
Population in
Cat.1 or higher
Location (lat, lon) Countries
GREEN
1 09 Feb 2018 00:00 Tropical storm 74 260000 people no people -13.8, -175.5 American Samoa
GREEN
2 09 Feb 2018 06:00 Tropical storm 74 260000 people no people -14.3, -174.5 Niue
GREEN
3 09 Feb 2018 12:00 Tropical storm 83 250000 people no people -14.5, -173 Niue
GREEN
4 09 Feb 2018 18:00 Tropical storm 83 250000 people no people -15.3, -171.4 Niue
GREEN
5 10 Feb 2018 00:00 Tropical storm 93 200000 people no people -16.1, -170 Niue
GREEN
6 10 Feb 2018 06:00 Tropical storm 93 1100 people no people -17, -169 Niue
GREEN
7 10 Feb 2018 12:00 Tropical storm 102 1100 people no people -18.2, -168.5 Niue
GREEN
8 10 Feb 2018 18:00 Category 1 139 1100 people no people -18.9, -168.6 Niue
GREEN
9 11 Feb 2018 00:00 Category 2 157 1100 people no people -20.5, -168.3 Niue
GREEN
10 11 Feb 2018 06:00 Category 2 167 6200 people no people -20.9, -168.9 Niue
GREEN
11 11 Feb 2018 12:00 Category 2 167 100000 people no people -21.4, -170.2 Niue
GREEN
12 11 Feb 2018 18:00 Category 2 176 100000 people no people -21.7, -171.5 Tonga
RED
13 12 Feb 2018 00:00 Category 3 204 100000 people 82000 people -21.8, -172.6 Tonga
RED
14 12 Feb 2018 06:00 Category 4 231 90000 people 82000 people -21.8, -174.3 Tonga
RED
15 12 Feb 2018 12:00 Category 4 231 84000 people 83000 people -21.5, -175.5 Tonga
GREEN
16 12 Feb 2018 18:00 Category 4 231 100000 people <1000 people -21.3, -177.1 Fiji
GREEN
17 13 Feb 2018 00:00 Category 4 222 80000 people <1000 people -21.2, -178.4 Fiji
GREEN
18 13 Feb 2018 06:00 Category 4 213 340000 people <1000 people -21, -179.5 Fiji
GREEN
19 13 Feb 2018 12:00 Category 3 204 20000 people no people -21.1, 179.5 Fiji
GREEN
20 13 Feb 2018 18:00 Category 3 204 12000 people no people -21, 178.6 Fiji
GREEN
21 14 Feb 2018 00:00 Category 4 213 13000 people no people -21.1, 177.7 Fiji
GREEN
22 14 Feb 2018 06:00 Category 4 213 10000 people no people -21.3, 177 Fiji
GREEN
23 14 Feb 2018 12:00 Category 4 213 <1000 people no people -21.5, 176
GREEN
24 14 Feb 2018 18:00 Category 3 194 <1000 people no people -21.5, 175.3
GREEN
25 15 Feb 2018 00:00 Category 3 194 <1000 people no people -21.5, 174.2 Vanuatu
GREEN
26 15 Feb 2018 06:00 Category 3 194 <1000 people <1000 people -21.8, 173.4
GREEN
27 15 Feb 2018 12:00 Category 3 185 8800 people <1000 people -22.3, 172.2 New Caledonia
GREEN
28 15 Feb 2018 18:00 Category 3 185 170000 people <1000 people -22.6, 171.2 New Caledonia
GREEN
29 16 Feb 2018 00:00 Category 2 176 200000 people no people -22.8, 170 Vanuatu
GREEN
30 16 Feb 2018 06:00 Category 2 167 210000 people no people -23.2, 169 Vanuatu
GREEN
31 16 Feb 2018 12:00 Category 1 148 210000 people no people -23.5, 168 New Caledonia
GREEN
32 16 Feb 2018 18:00 Category 1 139 200000 people no people -23.8, 167.3 New Caledonia
GREEN
33 17 Feb 2018 00:00 Category 1 130 180000 people no people -24.5, 166.4 New Caledonia
GREEN
34 17 Feb 2018 06:00 Category 1 120 90000 people no people -24.9, 165.6 New Caledonia
GREEN
35 17 Feb 2018 12:00 Tropical storm 111 no people no people -25.5, 164.7
GREEN
36 17 Feb 2018 18:00 Tropical storm 111 no people no people -26, 164.1
GREEN
37 18 Feb 2018 00:00 Tropical storm 102 no people no people -26.7, 163.3
GREEN
38 18 Feb 2018 06:00 Tropical storm 93 no people no people -27.4, 162.6
GREEN
39 18 Feb 2018 12:00 Tropical storm 93 no people no people -28.2, 162.4
GREEN
40 18 Feb 2018 18:00 Tropical storm 93 no people no people -29.2, 161.9
GREEN
41 19 Feb 2018 00:00 Tropical storm 93 <1000 people no people -30.9, 161.9
GREEN
42 19 Feb 2018 06:00 Tropical storm 93 no people no people -32.6, 162.6
GREEN
43 19 Feb 2018 12:00 Tropical storm 93 no people no people -34, 164.3
GREEN
44 19 Feb 2018 18:00 Tropical storm 102 850000 people no people -35.5, 167 New Zealand
GREEN
44 20 Feb 2018 06:00 Tropical storm 93 2.2 million people no people -39.6, 171.3 New Zealand
GREEN
44 20 Feb 2018 18:00 Tropical storm 74 no people no people -43.3, 174.8
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.



Exposed population

Countries

Country
New Zealand
New Caledonia
Vanuatu
Fiji
Tonga
Wallis & Futuna
Niue
Samoa
American Samoa

Provinces

Region Province Country Population
Waikato New Zealand 38000 people
Taranaki New Zealand -
Nelson-Marlborough New Zealand -
Westland New Zealand 9500 people
Wanganui-Manawatu New Zealand -
Bay of Plenty New Zealand -
Canterbury New Zealand -
Hawke's Bay New Zealand -
Wellington New Zealand 150000 people
Otago New Zealand -
Southland New Zealand 34000 people
New Caledonia New Caledonia 170000 people
Vanuatu Vanuatu 160000 people
Fiji Fiji 750000 people
Tonga Tonga 98000 people
Wallis & Futuna Wallis and Futuna 14000 people
Niue Niue 2000 people
Samoa Samoa 150000 people
American Samoa American Samoa 53000 people

Populated places

Name Region Province Country City class Population Distance
Hamilton Waikato New Zealand City 150000 people 782 km
Hawera Taranaki New Zealand City 10000 people 787 km
Te Awamutu Waikato New Zealand City 13000 people 792 km
Cambridge Waikato New Zealand City 15000 people 802 km
Nelson Nelson New Zealand Major city 45000 people 843 km
Greymouth West Coast New Zealand City 9300 people 854 km
Wanganui Manawatu Wanganui New Zealand City 39000 people 862 km
Rotorua Bay of Plenty New Zealand City 53000 people 874 km
Taupo Waikato New Zealand City 22000 people 880 km
Blenheim Marlborough New Zealand City 28000 people 903 km
Taihape Manawatu Wanganui New Zealand City 1700 people 905 km
Porirua Wellington New Zealand City 50000 people 927 km
Palmerston North Manawatu Wanganui New Zealand City 75000 people 929 km
Wellington Wellington New Zealand Capital 170000 people 937 km
Lower Hutt Wellington New Zealand City 99000 people 937 km
Upper Hutt Wellington New Zealand City 35000 people 940 km
Masterton Wellington New Zealand City 20000 people 969 km
Waipawa Hawke's Bay New Zealand City - 978 km
Waipukurau Hawke's Bay New Zealand City 3900 people 978 km
Napier Hawke's Bay New Zealand City 56000 people 982 km
Hastings Hawke's Bay New Zealand City 61000 people 983 km
Havelock North Hawke's Bay New Zealand City - 987 km
Christchurch Canterbury New Zealand Major city 350000 people 1014 km
Timaru Canterbury New Zealand City 27000 people 1052 km
Oamaru Otago New Zealand City 12000 people 1116 km
Dunedin Otago New Zealand Major city 110000 people 1189 km
Nouméa New Caledonia Capital 83000 people 1464 km
Comm. du Mont-Dore New Caledonia City - 1473 km
Nasau Fiji City - 2111 km
Soso Fiji City - 2138 km
Nuku'alofa Tonga Capital 24000 people 2354 km
Alofi Niue Capital <1000 people 2909 km
Mata-Utu Wallis and Futuna Capital 970000 people 2987 km
Apia Samoa Capital 39000 people 3207 km
Taputimu American Samoa City <1000 people 3228 km
Futiga American Samoa City <1000 people 3230 km
Mesepa American Samoa City <1000 people 3232 km
Fagasa American Samoa City <1000 people 3237 km
Pago Pago American Samoa Capital 4100 people 3240 km
Utulei American Samoa City <1000 people 3240 km
Leloaloa American Samoa City <1000 people 3242 km
Afono American Samoa City <1000 people 3244 km
Alofau American Samoa City <1000 people 3246 km
Amouli American Samoa City <1000 people 3248 km
Aoa American Samoa City <1000 people 3249 km
Alao American Samoa City <1000 people 3250 km
Tula American Samoa City <1000 people 3251 km

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) Distance
New Plymouth NPL 30 Civ. Paved Yes 4200 746 km
Raglan RAG unknown 0 749 km
Stratford 288 Civ. Unpaved No 3100 773 km
Karamea 9 Civ. Unpaved No 3000 777 km
Takaka KTF unknown 0 781 km
Hawera 114 Priv. Unpaved No 3100 784 km
Hamilton HLZ 52 Civ. Paved Yes 5600 790 km
Westport WSZ 4 Civ. Paved Yes 4100 799 km
Motueka MZP unknown 0 814 km
Taumarunui 198 Civ. Unpaved No 4100 821 km
Nelson NSN 5 Civ. Paved Yes 4400 842 km
Tokoroa TKZ unknown 0 846 km
Greymouth GMN 4 Priv. Paved Yes 2700 854 km
Lord Howe Island LDH unknown Civ. Paved Yes 2900 857 km
Wanganui WAG 8 Civ. Paved Yes 4500 863 km
Hokitika HKK 45 Civ. Paved No 4300 872 km
Waiouru 823 Mil. Paved No 3900 881 km
Taupo TUO 407 Civ. Paved Yes 4500 883 km
Picton Koromiko PCN unknown 0 893 km
Woodbourne BHE 33 Civ. Paved Yes 4600 897 km
Ohakea OHA 50 Mil. Paved Yes 8000 904 km
Franz Josef WHO unknown 0 905 km
Foxpine 11 0 911 km
Fox Glacier FGL unknown 0 915 km
Paraparaumu PPQ 7 Civ. Paved Yes 4400 921 km
Palmerston North PMR 45 Civ. Paved Yes 6200 927 km
Wellington International WLG 12 Civ. Paved Yes 6300 939 km
Dannevirke 194 Civ. Unpaved No 3900 955 km
Mount Cook MON 656 Civ. Paved No 5100 956 km
Masterton MRO 111 Civ. Paved No 4100 969 km
Glentanner GTN 556 Civ. Paved No 3100 971 km
Napier NPE 2 Civ. Paved Yes 4200 977 km
Waipukurau 131 Civ. Unpaved No 3400 977 km
Hastings 22 Civ. Paved No 3500 977 km
Wairoa WIR 13 Civ. Paved No 4400 1001 km
Pukaki 480 Civ. Paved No 3500 1006 km
Christchurch International CHC 37 Civ. Paved Yes 10700 1006 km
Wigram ZWG 23 Civ. Paved No 5100 1013 km
Ashburton ASG 91 Civ. Unpaved No 4500 1018 km
Omarama 421 Civ. Unpaved No 4500 1030 km
Wanaka WKA 348 Civ. Paved No 3900 1042 km
Timaru TIU 27 Civ. Paved No 4100 1042 km
Queenstown ZQN 358 Civ. Paved Yes 6200 1067 km
Alexandra ALR 229 Civ. Paved No 3900 1097 km
Oamaru OAM 30 Civ. Paved No 4200 1107 km
Dunedin DUD 1 Civ. Paved Yes 6200 1189 km
Ile Des Pins Moue ILP 96 Civ. Paved No 3600 1432 km
Ile Ouen IOU unknown 0 1450 km
Noumea / Magenta GEA 3 Civ. Paved Yes 4100 1469 km
La Tontouta NOU 16 Civ. Paved Yes 10600 1496 km
Mare la Roche MEE 43 Civ. Paved No 3200 1557 km
Wanaham LIF 28 Civ. Paved No 3600 1632 km
Kandavu KDV unknown 0 2127 km
Vatulele VTF unknown 0 2150 km
Ono-I-Lau ONU unknown 0 2159 km
Moala MFJ unknown 0 2269 km
Ngau NGI unknown 0 2278 km
Fua'amotu International TBU 38 Civ. Paved Yes 8700 2351 km
Eua Kaufana EUA unknown 0 2353 km
Haapai HPA 12 Civ. Unpaved Yes 3900 2526 km
Niue Hanan IUE 64 Civ. Paved Yes 7600 2907 km
Wallis Island WLS 24 Civ. Paved Yes 6500 2987 km
Maota MXS unknown 0 3183 km
Lalomalava LAV unknown 0 3184 km
Faleolo APW 18 Civ. Paved Yes 8800 3191 km
Pago Pago International PPG 9 Civ. Paved Yes 9000 3234 km
Ofu OFU 3 0 3319 km
Tau TAV 56 0 3327 km
Fitiuta FTI 34 0 3334 km

Ports

Name LOCODE Country Distance
Cape Egmont New Zealand 732 km
New Plymouth NZNPL New Zealand 738 km
Port Taranaki / New Plymouth NZNPL New Zealand 738 km
Opunake New Zealand 748 km
Taharoa New Zealand 748 km
Waitara New Zealand 752 km
Collingwood New Zealand 760 km
Karamea New Zealand 781 km
Cape Foulwind New Zealand 797 km
Westport NZWSZ New Zealand 802 km
Motueka NZMZP New Zealand 813 km
Patea New Zealand 815 km
Waverley Harbour NZWAV New Zealand 827 km
Nelson NZNSN New Zealand 842 km
D'urville Island New Zealand 843 km
Runanga New Zealand 847 km
Greymouth NZGMN New Zealand 852 km
Lord Howe Is AULDH Coral Sea Islands 856 km
Wanganui NZWAG New Zealand 863 km
Hokitika New Zealand 869 km
Ross New Zealand 882 km
Picton NZPCN New Zealand 887 km
Okarito New Zealand 901 km
Blenheim NZBHE New Zealand 920 km
Porirua New Zealand 924 km
Lower Hutt New Zealand 928 km
Cape Campbell New Zealand 937 km
Petone New Zealand 938 km
Wellington NZWLG New Zealand 939 km
Jackson New Zealand 954 km
Kaikoura NZKBZ New Zealand 960 km
Napier NZNPE New Zealand 979 km
Cape Palliser New Zealand 990 km
Rangiora New Zealand 998 km
Cape Kidnappers New Zealand 1001 km
Riverdale New Zealand 1001 km
Wairoa NZWIR New Zealand 1005 km
Cape Turnagain New Zealand 1008 km
Christchurch NZCHC New Zealand 1019 km
Lyttelton NZLYT New Zealand 1025 km
Timaru NZTIU New Zealand 1053 km
Akaroa NZAKA New Zealand 1054 km
Oamaru NZOAM New Zealand 1116 km
Port Chalmers (Dunedin Harbour) NZPOE New Zealand 1181 km
Otago NZORR New Zealand 1184 km
Dunedin NZDUD New Zealand 1190 km
Kaitangata NZKTG New Zealand 1226 km
Kuto New Caledonia 1424 km
Noumea NCNOU New Caledonia 1469 km
Ducos NCDUS New Caledonia 1471 km
Matthew Island New Caledonia 1518 km
Hunter Island New Caledonia 1534 km
Thialis NCTHI New Caledonia 1542 km
Tadine New Caledonia 1548 km
Kouaoua NCKOU New Caledonia 1566 km
Baie de Poro NCPOR New Caledonia 1578 km
We New Caledonia 1617 km
Aneityum Island Vanuatu 1714 km
Kandavu Island Fiji 2135 km
Ata Island Tonga 2188 km
Nuku'alofa TOTBU Tonga 2355 km
Eua Island Tonga 2358 km
Pangai TOPAN Tonga 2523 km
Alofi Niue 2911 km
Mata Utu Wallis and Futuna 2984 km
Apia WSAPW Samoa 3208 km
Apia Samoa 3222 km
Pago Pago ASPPG American Samoa 3240 km
Manua Island American Samoa 3328 km

Dams

Reservoir Dam Name River Year Distance
Mangamahoe Mangamahoe 1931 748 km
Ratapiko Mako 1926 769 km
Cobb Cobb 1954 796 km
Patea Patea 1984 805 km
Karapiro Waikato 1947 809 km
Arapuni Waikato 1928 823 km
Waipapa Waikato 1961 833 km
Maraetai Waikato 1953 841 km
Whakamaru Waikato 1956 848 km
Otamangakau Otamanakau Stream 1971 857 km
Kuratau Kuratau 1962 860 km
Atiamuri Waikato 1958 865 km
Rotoaira Poutu Poutu 1972 870 km
Ohakuri Waikato 1960 871 km
Rangipo Tongariro 1980 879 km
Taupo Taupo Lake Control Waikato -99 882 km
Hinemaiaia B Hinemaiaia 1966 886 km
Moawhango Moawhango 1975 887 km
Hinemaiaia A Hinemaiaia 1952 890 km
Waihopai Waihopai 1927 891 km
Taylor Taylor -99 905 km
Lower Karori Kaiwharawhara 1872 933 km
Upper Karori Kaiwharawhara 1908 933 km
Te Marua 2 Hutt 1985 944 km
Te Marua 1 Hutt 1986 944 km
Morton Wainuiomata 1911 947 km
Tekapo Tekapo Lake Control Tekapo 1951 990 km
Pukaki Pukaki Canal Inlet Dam Pukaki 1976 1001 km
Ruantaniwha Ohau 1981 1010 km
Hawea Hawea Lake Control Hawea 1959 1029 km
Benmore Waitiki 1965 1042 km
Aviemore Waitaki 1968 1056 km
Waitaki Waitaki 1934 1061 km
Falls Manuherikia 1935 1069 km
West Eweburn Eweburn 1900 1087 km
Clyde Clutha 1987 1092 km
Fraser Fraser 1937 1094 km
Lower Manorburn Manorburn 1933 1101 km
Conroys Conroys Creek 1936 1104 km
Butchers Butchers Creek 1937 1105 km
Poolburn Poolburn 1931 1113 km
Upper Manorburn Manorburn 1917 1117 km
Roxburgh Clutha 1956 1125 km
Onslow Teviot 1982 1138 km
Mahinerangi Waipori 1931 1180 km

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

1.6 m

The maximum Storm surge height is  1.6m in Tahunanui, New Zealand. This height is estimated for 20 Feb 2018 12:00 UTC .

The JRC has developed an experimental global storm surge model, which is run after each advisory issued by the regional tropical cyclone centres. 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 (338 locations). Calculation based on advisory number 44 of 19 Feb 2018 18:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)
20 Feb 2018 12:00 Tahunanui New Zealand  1.6
20 Feb 2018 12:00 Stoke New Zealand  1.6
20 Feb 2018 12:00 Wakatu New Zealand  1.6
20 Feb 2018 12:00 Richmond New Zealand  1.6
20 Feb 2018 12:00 Nelson New Zealand  1.5
20 Feb 2018 12:00 Port Nelson New Zealand  1.5
20 Feb 2018 12:00 Hope New Zealand  1.5
20 Feb 2018 11:00 Mapua New Zealand  1.3
20 Feb 2018 12:00 Atawhai New Zealand  1.2
20 Feb 2018 12:00 Wakapuaka New Zealand  1.2
20 Feb 2018 12:00 Glenduan New Zealand  1.2
20 Feb 2018 11:00 Motueka New Zealand  1.2
20 Feb 2018 11:00 Port Motueka New Zealand  1.2
20 Feb 2018 11:00 Lower Moutere New Zealand  1.2
20 Feb 2018 11:00 Mahana New Zealand  1.1
20 Feb 2018 11:00 Riwaka New Zealand  1.1
20 Feb 2018 12:00 Hira New Zealand  0.9
20 Feb 2018 11:00 Umukuri New Zealand  0.9
20 Feb 2018 10:00 Tarakohe New Zealand  0.9
20 Feb 2018 12:00 Whangamoa New Zealand  0.8
20 Feb 2018 10:00 Onekaka New Zealand  0.8
12 Feb 2018 11:00 Ohonua Tonga  0.8
12 Feb 2018 11:00 Fuaamotu Tonga  0.8
12 Feb 2018 11:00 Fatumu Tonga  0.8
20 Feb 2018 10:00 Collingwood New Zealand  0.7
12 Feb 2018 12:00 Nukunuku Tonga  0.7
12 Feb 2018 12:00 Houma Tonga  0.7
12 Feb 2018 12:00 Pea Tonga  0.7
12 Feb 2018 12:00 Nuku'alofa Tonga  0.7
12 Feb 2018 12:00 Mua Tonga  0.7
12 Feb 2018 12:00 Foui Tonga  0.7
20 Feb 2018 10:00 Paturau River New Zealand  0.6
20 Feb 2018 10:00 Totaranui New Zealand  0.6
20 Feb 2018 12:00 Paekakariki New Zealand  0.6
20 Feb 2018 12:00 Raumati Beach New Zealand  0.6
20 Feb 2018 12:00 Paraparaumu Beach New Zealand  0.6
20 Feb 2018 12:00 Paraparaumu New Zealand  0.6
20 Feb 2018 12:00 Otaki New Zealand  0.6
20 Feb 2018 09:00 Pakawau New Zealand  0.6
20 Feb 2018 12:00 Waikanae New Zealand  0.6
20 Feb 2018 12:00 Foxton New Zealand  0.6
20 Feb 2018 13:00 Wadestown New Zealand  0.6
20 Feb 2018 13:00 Ngaio New Zealand  0.6
20 Feb 2018 13:00 Kaiwharawhara New Zealand  0.6
20 Feb 2018 13:00 Khandallah New Zealand  0.6
20 Feb 2018 12:00 Otaki Beach New Zealand  0.6
20 Feb 2018 12:00 Te Horo New Zealand  0.6
20 Feb 2018 12:00 Okukari New Zealand  0.5
20 Feb 2018 12:00 Raumati South New Zealand  0.5
20 Feb 2018 12:00 Waitarere New Zealand  0.5
20 Feb 2018 12:00 Foxton Beach New Zealand  0.5
12 Feb 2018 11:00 Kolonga Tonga  0.5
12 Feb 2018 11:00 Niutoua Tonga  0.5
20 Feb 2018 12:00 Titahi Bay New Zealand  0.5
20 Feb 2018 12:00 Plimmerton New Zealand  0.5
20 Feb 2018 12:00 Paremata New Zealand  0.5
20 Feb 2018 12:00 Raumati New Zealand  0.5
20 Feb 2018 12:00 Tangimoana New Zealand  0.5
20 Feb 2018 09:00 Puponga New Zealand  0.5
20 Feb 2018 11:00 Greville Harbour New Zealand  0.5
20 Feb 2018 12:00 Mokoia New Zealand  0.5
20 Feb 2018 12:00 Manutahi New Zealand  0.5
20 Feb 2018 12:00 Pukerua Bay New Zealand  0.5
20 Feb 2018 13:00 Linden New Zealand  0.5
20 Feb 2018 13:00 Porirua New Zealand  0.5
20 Feb 2018 12:00 Whakatahuri New Zealand  0.5
20 Feb 2018 12:00 Onauku New Zealand  0.5
20 Feb 2018 12:00 Kakaramea New Zealand  0.5
20 Feb 2018 13:00 Johnsonville New Zealand  0.5
20 Feb 2018 13:00 Ngauranga New Zealand  0.5
20 Feb 2018 13:00 Korokoro New Zealand  0.5
20 Feb 2018 13:00 Petone New Zealand  0.5
20 Feb 2018 13:00 Wanganui New Zealand  0.5
20 Feb 2018 13:00 Patea New Zealand  0.5
20 Feb 2018 13:00 Rangikura New Zealand  0.5
20 Feb 2018 13:00 Castlecliff New Zealand  0.5
20 Feb 2018 12:00 Hawera New Zealand  0.5
20 Feb 2018 12:00 Whareroa New Zealand  0.5
20 Feb 2018 13:00 Kai Iwi Beach New Zealand  0.5
20 Feb 2018 13:00 Rapanui New Zealand  0.5
20 Feb 2018 13:00 Mowhanau New Zealand  0.5
20 Feb 2018 12:00 Ohawe New Zealand  0.4
20 Feb 2018 12:00 Admiralty Bay New Zealand  0.4
20 Feb 2018 12:00 Manaia New Zealand  0.4
20 Feb 2018 12:00 Inaha New Zealand  0.4
20 Feb 2018 11:00 Patuki New Zealand  0.4
20 Feb 2018 12:00 Lower Hutt New Zealand  0.4
20 Feb 2018 12:00 Gracefield New Zealand  0.4
20 Feb 2018 12:00 Wainuiomata New Zealand  0.4
20 Feb 2018 12:00 Otakeho New Zealand  0.4
20 Feb 2018 12:00 Kaupokonui New Zealand  0.4
20 Feb 2018 11:00 Waiteika New Zealand  0.4
20 Feb 2018 11:00 Pihama New Zealand  0.4
20 Feb 2018 12:00 Ohariu New Zealand  0.4
20 Feb 2018 10:00 Urenui New Zealand  0.4
20 Feb 2018 10:00 Pukearuhe New Zealand  0.4
20 Feb 2018 12:00 Oeo New Zealand  0.4
20 Feb 2018 10:00 Moturoa New Zealand  0.4
20 Feb 2018 10:00 New Plymouth New Zealand  0.4
20 Feb 2018 10:00 Onaero New Zealand  0.4
20 Feb 2018 11:00 Tongaporutu New Zealand  0.4
20 Feb 2018 10:00 Oaonui New Zealand  0.4
20 Feb 2018 10:00 Bell Block New Zealand  0.4
20 Feb 2018 11:00 Opunake New Zealand  0.4
20 Feb 2018 10:00 Motunui New Zealand  0.3
20 Feb 2018 04:00 Kennedys Bay New Zealand  0.3
20 Feb 2018 04:00 Te Rerenga New Zealand  0.3
20 Feb 2018 04:00 Whangapoua New Zealand  0.3
20 Feb 2018 04:00 Whitianga New Zealand  0.3
20 Feb 2018 10:00 Waitara New Zealand  0.3
20 Feb 2018 10:00 Makarau New Zealand  0.3
20 Feb 2018 04:00 Waitakaruru New Zealand  0.3
20 Feb 2018 10:00 Rahotu New Zealand  0.3
20 Feb 2018 11:00 Mokau New Zealand  0.3
20 Feb 2018 03:00 Miranda New Zealand  0.3
20 Feb 2018 09:00 Pipiroa New Zealand  0.3
20 Feb 2018 10:00 Thames New Zealand  0.3
20 Feb 2018 11:00 Awakino New Zealand  0.3
20 Feb 2018 14:00 Hapuku New Zealand  0.3
20 Feb 2018 10:00 Cowes Bay New Zealand  0.3
20 Feb 2018 10:00 Cowes New Zealand  0.3
20 Feb 2018 14:00 Kaikoura New Zealand  0.3
20 Feb 2018 03:00 Kaiaua New Zealand  0.3
20 Feb 2018 14:00 Amberley New Zealand  0.3
20 Feb 2018 15:00 Mangamaunu New Zealand  0.3
20 Feb 2018 10:00 Warea New Zealand  0.3
20 Feb 2018 14:00 Waikuku Beach New Zealand  0.3
20 Feb 2018 15:00 Leithfield New Zealand  0.3
20 Feb 2018 14:00 Balcairn New Zealand  0.3
20 Feb 2018 11:00 Waikawau New Zealand  0.3
20 Feb 2018 05:00 Omiha New Zealand  0.3
20 Feb 2018 01:00 Takapuna New Zealand  0.3
20 Feb 2018 10:00 Puniho New Zealand  0.3
20 Feb 2018 11:00 Whareorino New Zealand  0.3
20 Feb 2018 13:00 Karori New Zealand  0.3
20 Feb 2018 13:00 Brooklyn New Zealand  0.3
20 Feb 2018 13:00 Island Bay New Zealand  0.3
20 Feb 2018 13:00 Berhampore New Zealand  0.3
20 Feb 2018 13:00 Wellington New Zealand  0.3
20 Feb 2018 13:00 Kilbirnie New Zealand  0.3
20 Feb 2018 13:00 Hataitai New Zealand  0.3
20 Feb 2018 14:00 Clarence New Zealand  0.3
20 Feb 2018 01:00 Narrow Neck New Zealand  0.3
20 Feb 2018 01:00 North Head New Zealand  0.3
20 Feb 2018 01:00 Bayswater New Zealand  0.3
16 Feb 2018 11:00 Gadji New Caledonia  0.2
16 Feb 2018 11:00 Kuto New Caledonia  0.2
16 Feb 2018 11:00 Wapan New Caledonia  0.2
16 Feb 2018 11:00 Vao New Caledonia  0.2
20 Feb 2018 05:00 Ahipara New Zealand  0.2
20 Feb 2018 13:00 Miramar New Zealand  0.2
20 Feb 2018 13:00 Seatoun New Zealand  0.2
20 Feb 2018 10:00 Glorit New Zealand  0.2
20 Feb 2018 10:00 Okato New Zealand  0.2
20 Feb 2018 10:00 Tataraimaka New Zealand  0.2
20 Feb 2018 10:00 Oakura New Zealand  0.2
20 Feb 2018 10:00 Omata New Zealand  0.2
20 Feb 2018 11:00 Kiritehere New Zealand  0.2
20 Feb 2018 11:00 Marokopa New Zealand  0.2
20 Feb 2018 11:00 Te Maika New Zealand  0.2
20 Feb 2018 11:00 Te Rauamoa New Zealand  0.2
20 Feb 2018 11:00 Kawhia New Zealand  0.2
20 Feb 2018 12:00 Karamea New Zealand  0.2
20 Feb 2018 12:00 Oparara New Zealand  0.2
20 Feb 2018 12:00 Market Cross New Zealand  0.2
20 Feb 2018 18:00 Clandeboye New Zealand  0.2
20 Feb 2018 14:00 Waikuku New Zealand  0.2
20 Feb 2018 04:00 Surfdale New Zealand  0.2
20 Feb 2018 04:00 Onetangi New Zealand  0.2
20 Feb 2018 14:00 Kekerengu New Zealand  0.2
20 Feb 2018 03:00 Kereta New Zealand  0.2
20 Feb 2018 10:00 Te Puru New Zealand  0.2
16 Feb 2018 11:00 Prony New Caledonia  0.2
16 Feb 2018 12:00 Ouara New Caledonia  0.2
20 Feb 2018 04:00 Oneroa New Zealand  0.2
20 Feb 2018 04:00 Blackpool New Zealand  0.2
20 Feb 2018 11:00 Ruapuke New Zealand  0.2
20 Feb 2018 12:00 Little Wanganui New Zealand  0.2
20 Feb 2018 12:00 Te Namu New Zealand  0.2
20 Feb 2018 12:00 Kongahu New Zealand  0.2
20 Feb 2018 14:00 Aranui New Zealand  0.2
20 Feb 2018 14:00 New Brighton New Zealand  0.2
20 Feb 2018 18:00 Lowcliffe New Zealand  0.2
20 Feb 2018 18:00 Taumutu New Zealand  0.2
20 Feb 2018 11:00 Tauhoa New Zealand  0.2
20 Feb 2018 12:00 Te Akau New Zealand  0.2
20 Feb 2018 13:00 Eastbourne New Zealand  0.2
20 Feb 2018 13:00 Days Bay New Zealand  0.2
20 Feb 2018 17:00 Sedgemere New Zealand  0.2
20 Feb 2018 15:00 Oaro New Zealand  0.2
20 Feb 2018 03:00 Orere Point New Zealand  0.2
16 Feb 2018 09:00 Yate-Village New Caledonia  0.2
16 Feb 2018 09:00 Waho New Caledonia  0.2
20 Feb 2018 02:00 Campbells Bay New Zealand  0.2
20 Feb 2018 10:00 Tikorangi New Zealand  0.2
20 Feb 2018 12:00 Raglan New Zealand  0.2
20 Feb 2018 18:00 Heathcote New Zealand  0.2
20 Feb 2018 18:00 Heathcote Valley New Zealand  0.2
20 Feb 2018 18:00 Teddington New Zealand  0.2
20 Feb 2018 18:00 Rapaki New Zealand  0.2
20 Feb 2018 18:00 Lyttelton New Zealand  0.2
20 Feb 2018 15:00 Goose Bay New Zealand  0.2
20 Feb 2018 18:00 Woolston New Zealand  0.2
20 Feb 2018 18:00 Bromley New Zealand  0.2
16 Feb 2018 12:00 Bouloupari New Caledonia  0.2
16 Feb 2018 12:00 Tomo New Caledonia  0.2
16 Feb 2018 10:00 Plum New Caledonia  0.2
20 Feb 2018 03:00 Coromandel New Zealand  0.2
20 Feb 2018 13:00 Redcliffs New Zealand  0.2
20 Feb 2018 15:00 Washdyke New Zealand  0.2
20 Feb 2018 15:00 Timaru New Zealand  0.2
20 Feb 2018 15:00 Seadown New Zealand  0.2
20 Feb 2018 16:00 Port Robinson New Zealand  0.2
20 Feb 2018 18:00 Little River New Zealand  0.2
20 Feb 2018 18:00 Longbeach New Zealand  0.2
20 Feb 2018 18:00 Waterton New Zealand  0.2
20 Feb 2018 18:00 Ashton New Zealand  0.2
20 Feb 2018 18:00 Riverside New Zealand  0.2
20 Feb 2018 14:00 Wharanui New Zealand  0.2
16 Feb 2018 09:00 Saint-Louis New Caledonia  0.2
20 Feb 2018 12:00 Waimarie New Zealand  0.2
20 Feb 2018 12:00 Port Waikato New Zealand  0.2
20 Feb 2018 12:00 Otaua New Zealand  0.2
20 Feb 2018 14:00 Hauwai New Zealand  0.2
20 Feb 2018 03:00 Amodeo Bay New Zealand  0.2
20 Feb 2018 03:00 Amodeo New Zealand  0.2
20 Feb 2018 12:00 Miko New Zealand  0.2
20 Feb 2018 12:00 Mokihinui New Zealand  0.2
20 Feb 2018 12:00 Te Toro New Zealand  0.2
20 Feb 2018 18:00 Pareora New Zealand  0.2
20 Feb 2018 18:00 Salisbury New Zealand  0.2
20 Feb 2018 18:00 Kingsdown New Zealand  0.2
20 Feb 2018 17:00 Kyle New Zealand  0.2
20 Feb 2018 12:00 Blind River New Zealand  0.2
20 Feb 2018 11:00 Muriwai New Zealand  0.2
20 Feb 2018 11:00 Muriwai Beach New Zealand  0.2
20 Feb 2018 03:00 Red Beach New Zealand  0.1
20 Feb 2018 03:00 Matakana New Zealand  0.1
20 Feb 2018 03:00 Glenfield New Zealand  0.1
20 Feb 2018 03:00 Stanmore Bay New Zealand  0.1
20 Feb 2018 03:00 Big Omaha New Zealand  0.1
20 Feb 2018 01:00 Browns Bay New Zealand  0.1
20 Feb 2018 03:00 Mairangi Bay New Zealand  0.1
20 Feb 2018 01:00 Torbay New Zealand  0.1
20 Feb 2018 01:00 Whangaparaoa New Zealand  0.1
20 Feb 2018 03:00 Whangateau New Zealand  0.1
20 Feb 2018 03:00 Tawharanui New Zealand  0.1
20 Feb 2018 03:00 Kawau Island New Zealand  0.1
20 Feb 2018 03:00 Colville New Zealand  0.1
20 Feb 2018 04:00 Tryphena New Zealand  0.1
20 Feb 2018 12:00 Granity New Zealand  0.1
20 Feb 2018 12:00 Ngakawau New Zealand  0.1
20 Feb 2018 12:00 Hector New Zealand  0.1
20 Feb 2018 12:00 Stockton New Zealand  0.1
20 Feb 2018 11:00 Piha New Zealand  0.1
20 Feb 2018 11:00 Karekare New Zealand  0.1
20 Feb 2018 12:00 Pollok New Zealand  0.1
20 Feb 2018 18:00 Saint Andrews New Zealand  0.1
20 Feb 2018 18:00 Pigeon Bay New Zealand  0.1
20 Feb 2018 18:00 Little Akaloa New Zealand  0.1
20 Feb 2018 18:00 Wainui New Zealand  0.1
20 Feb 2018 18:00 French Farm New Zealand  0.1
20 Feb 2018 18:00 Barrys Bay New Zealand  0.1
20 Feb 2018 18:00 Duvauchelle New Zealand  0.1
20 Feb 2018 18:00 Robinsons Bay New Zealand  0.1
20 Feb 2018 18:00 Takamatua New Zealand  0.1
20 Feb 2018 01:00 Waiwera New Zealand  0.1
20 Feb 2018 03:00 Pakiri New Zealand  0.1
20 Feb 2018 01:00 Mahurangi New Zealand  0.1
20 Feb 2018 03:00 Leigh New Zealand  0.1
20 Feb 2018 04:00 Claris New Zealand  0.1
20 Feb 2018 04:00 Okupu New Zealand  0.1
20 Feb 2018 05:00 Motutangi New Zealand  0.1
20 Feb 2018 07:00 Westport New Zealand  0.1
20 Feb 2018 07:00 Sergeants Hill New Zealand  0.1
20 Feb 2018 07:00 Fairdown New Zealand  0.1
20 Feb 2018 12:00 Birchfield New Zealand  0.1
20 Feb 2018 12:00 Awhitu Central New Zealand  0.1
20 Feb 2018 15:00 Otaio New Zealand  0.1
16 Feb 2018 10:00 Noumea New Caledonia  0.1
16 Feb 2018 10:00 Comm. du Mont-Dore New Caledonia  0.1
16 Feb 2018 10:00 Paita New Caledonia  0.1
16 Feb 2018 10:00 Nouville New Caledonia  0.1
16 Feb 2018 10:00 Dumbea New Caledonia  0.1
20 Feb 2018 09:00 Tapu New Zealand  0.1
20 Feb 2018 11:00 Pouto New Zealand  0.1
20 Feb 2018 18:00 Glenavy New Zealand  0.1
20 Feb 2018 07:00 Carters Beach New Zealand  0.1
20 Feb 2018 12:00 Waimangaroa New Zealand  0.1
20 Feb 2018 12:00 Millerton New Zealand  0.1
20 Feb 2018 11:00 Mangere New Zealand  0.1
20 Feb 2018 15:00 Makikihi New Zealand  0.1
20 Feb 2018 14:00 Mirza New Zealand  0.1
20 Feb 2018 14:00 Ward New Zealand  0.1
20 Feb 2018 18:00 Akaroa New Zealand  0.1
20 Feb 2018 18:00 Okains New Zealand  0.1
20 Feb 2018 18:00 Le Bons Bay New Zealand  0.1
20 Feb 2018 11:00 Helensville New Zealand  0.1
16 Feb 2018 03:00 Goro New Caledonia  0.1
20 Feb 2018 05:00 Ngataki New Zealand  0.1
20 Feb 2018 05:00 Waihopo New Zealand  0.1
20 Feb 2018 05:00 Houhora New Zealand  0.1
20 Feb 2018 05:00 Pukenui New Zealand  0.1
20 Feb 2018 00:00 Kaimaumau New Zealand  0.1
20 Feb 2018 00:00 Rangiputa New Zealand  0.1
20 Feb 2018 00:00 Lake Ohia New Zealand  0.1
20 Feb 2018 10:00 Charleston New Zealand  0.1
20 Feb 2018 11:00 Picton New Zealand  0.1
20 Feb 2018 11:00 Manaroa New Zealand  0.1
20 Feb 2018 11:00 Waikawa New Zealand  0.1
20 Feb 2018 12:00 Kenepuru Head New Zealand  0.1
20 Feb 2018 15:00 Hook New Zealand  0.1
20 Feb 2018 11:00 Parkhurst New Zealand  0.1
20 Feb 2018 11:00 Parakai New Zealand  0.1
09 Feb 2018 01:00 Mua Wallis and Futuna  0.1
20 Feb 2018 01:00 Algies Bay New Zealand  0.1
20 Feb 2018 03:00 Port Jackson New Zealand  0.1
20 Feb 2018 03:00 Port Charles New Zealand  0.1
20 Feb 2018 00:00 Merita New Zealand  0.1
20 Feb 2018 04:00 Port Fitzroy New Zealand  0.1
20 Feb 2018 04:00 Motairehe New Zealand  0.1
20 Feb 2018 04:00 Okiwi New Zealand  0.1
20 Feb 2018 16:00 Chorlton New Zealand  0.1
16 Feb 2018 09:00 Nde New Caledonia  0.1
20 Feb 2018 06:00 Whangape New Zealand  0.1
20 Feb 2018 06:00 Pawarenga New Zealand  0.1
20 Feb 2018 06:00 Mitimiti New Zealand  0.1
20 Feb 2018 11:00 Glinks Gully New Zealand  0.1
20 Feb 2018 11:00 Redhill New Zealand  0.1
20 Feb 2018 11:00 Te Mane New Zealand  0.1
20 Feb 2018 11:00 Tikinui New Zealand  0.1
20 Feb 2018 11:00 Naumai New Zealand  0.1
20 Feb 2018 11:00 Raupo New Zealand  0.1
20 Feb 2018 10:00 Pahautane New Zealand  0.1
20 Feb 2018 10:00 Tiromoana New Zealand  0.1
20 Feb 2018 13:00 Barrytown New Zealand  0.1
20 Feb 2018 18:00 Oamaru New Zealand  0.1
20 Feb 2018 18:00 Hilderthorpe New Zealand  0.1