Overall Green alert Tropical Cyclone for ZAZU-20
in Niue, Tonga
15 Dec 2020 18 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

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

Meteorological source HWRF
Exposed countries Niue
Exposed population No people in Category 1 or higher
Maximum wind speed 94 km/h
Maximum storm surge 1.2 m (17 Dec 06:15 UTC)
Vulnerability High (Niue)

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
HWRF Current 94 km/h 1.2 m 26 mm 0.5
HWRF Overall 112 km/h 1.1 m 640 mm 0.5

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

TOP

Wind

112 km/h

Up to 1 thousand can be affected by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

Estimations based on the bulletin of 15 Dec 2020 18:00 UTC
CategoryCountryPopulation 
Tropical StormNiue1,190 

See TC classification SSHS


Wind Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert N° Date (UTC) Max Winds (km/h) Pop in Cat. 1 or higher TS Cat. 1 Cat. 2 Cat. 3 Cat. 4 Cat. 5 Countries
GREEN 1 13 Dec 2020 12:00 97 - - - - - - -
GREEN 2 13 Dec 2020 18:00 86 - - - - - - -
GREEN 3 14 Dec 2020 00:00 83 - - - - - - -
GREEN 4 14 Dec 2020 06:00 90 -
- - - - - Tonga
GREEN 5 14 Dec 2020 12:00 101 -
- - - - - Tonga
GREEN 6 14 Dec 2020 18:00 90 -
- - - - - Tonga
GREEN 7 15 Dec 2020 00:00 112 -
- - - - - Tonga
GREEN 8 15 Dec 2020 06:00 86 -
- - - - - Tonga
GREEN 9 15 Dec 2020 12:00 90 -
- - - - - Niue
GREEN 10 15 Dec 2020 18:00 133 -
- - - - - Niue
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

No exposed population (greater than 50mm) based on the bulletin of 15 Dec 2020 18:00 UTC

Rain Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert N° Date (UTC) Max Rainfall (mm) Pop >100mm or higher 50-100 100-250 250-500 500-750 750-1000 >1000 Countries
Blue 1 13 Dec 2020 12:00 27 - - - - - - -
Blue 2 13 Dec 2020 18:00 24 - - - - - - -
Blue 3 14 Dec 2020 00:00 23 - - - - - - -
Blue 4 14 Dec 2020 06:00 25 1 thousand - - - - - - Tonga
Blue 5 14 Dec 2020 12:00 28 20 thousand - - - - - - Tonga
Blue 6 14 Dec 2020 18:00 25 9 thousand - - - - - - Tonga
Blue 7 15 Dec 2020 00:00 31 5 thousand - - - - - - Tonga
Blue 8 15 Dec 2020 06:00 24 2 thousand - - - - - - Tonga
Blue 9 15 Dec 2020 12:00 25 1 thousand - - - - - - Niue
Blue 10 15 Dec 2020 18:00 304 - - - - - - -




Impact estimation for the next 72h
TOP

StormSurge

1.2 m

The maximum Storm surge height is  1.2m in Lautoka, Fiji. This height is estimated for 17 Dec 2020 06:15 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.

Storm Surge Exposed population - AoIs


Storm Surge Exposed locations

Calculation based on the bulletin of 15 Dec 2020 18:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
17 Dec 2020 06:15 Lautoka Fiji  1.2
17 Dec 2020 06:15 Nailanga Fiji  1.2
17 Dec 2020 06:15 Sorokoba Fiji  1.2
17 Dec 2020 06:15 Ba Fiji  1.2
17 Dec 2020 09:30 Natunuka Fiji  1.2
17 Dec 2020 09:30 Tavua Fiji  1.2
17 Dec 2020 09:30 Rabulu Fiji  1.2
17 Dec 2020 09:30 Togowere Fiji  1.2
17 Dec 2020 06:15 Matacawalevu Fiji  1.2
17 Dec 2020 06:15 Sisili Fiji  1.2
17 Dec 2020 06:15 Nacula Fiji  1.2
17 Dec 2020 06:15 Navotua Fiji  1.2
17 Dec 2020 06:15 Tamusua Fiji  1.2
17 Dec 2020 06:15 Teci Fiji  1.2
17 Dec 2020 06:15 Mbukama Fiji  1.2
17 Dec 2020 06:15 Yasawairara Fiji  1.2
17 Dec 2020 10:15 Soso Fiji  1.1
17 Dec 2020 10:15 Somosomo Fiji  1.1
17 Dec 2020 09:30 Rakiraki Fiji  1.1
17 Dec 2020 09:30 Vaileka Fiji  1.1
17 Dec 2020 09:30 Nanukuloa Fiji  1.1
17 Dec 2020 09:30 Nasau Fiji  1.0
17 Dec 2020 10:15 Nalauwaki Fiji  1.0
17 Dec 2020 03:30 Matayalevu Fiji  0.9
17 Dec 2020 05:45 Tavua Fiji  0.8
17 Dec 2020 09:45 Nayavutoka Fiji  0.8
17 Dec 2020 05:15 Solevu Fiji  0.8
17 Dec 2020 05:30 Namaka Fiji  0.7
17 Dec 2020 12:45 Lawaki Fiji  0.7
17 Dec 2020 12:45 Kasavu Fiji  0.7
17 Dec 2020 12:45 Nausori Fiji  0.7
17 Dec 2020 12:45 Korovou Fiji  0.7
17 Dec 2020 12:45 Lokia Fiji  0.7
17 Dec 2020 12:45 Naimasimasi Fiji  0.7
17 Dec 2020 12:45 Ucunivanua Fiji  0.7
17 Dec 2020 12:45 Cautata Fiji  0.7
17 Dec 2020 12:45 Nasilai Fiji  0.7
17 Dec 2020 12:45 Dromuna Fiji  0.7
17 Dec 2020 11:15 Nadi Fiji  0.6
17 Dec 2020 12:45 Lodoni Fiji  0.6
17 Dec 2020 12:45 Naingani Fiji  0.6
17 Dec 2020 18:30 Galoa Fiji  0.6
17 Dec 2020 18:30 Yanutha Fiji  0.6
17 Dec 2020 18:30 Matavuralevu Fiji  0.6
17 Dec 2020 18:30 Pacific Harbour Fiji  0.6
17 Dec 2020 18:30 Waisomo Fiji  0.6
17 Dec 2020 18:30 Dakuimbeqa Fiji  0.6
17 Dec 2020 18:30 Lalati Fiji  0.6
17 Dec 2020 18:30 Navua Fiji  0.6
17 Dec 2020 18:30 Naitionitoni Fiji  0.6
17 Dec 2020 18:30 Mau Fiji  0.6
17 Dec 2020 09:15 Koroinasolo Fiji  0.6
17 Dec 2020 09:15 Savu Sau Fiji  0.6
17 Dec 2020 09:15 Navinggiri Fiji  0.6
17 Dec 2020 09:15 Yangganga Fiji  0.6
17 Dec 2020 09:15 Nawailevu Fiji  0.6
17 Dec 2020 18:30 Korovisilou Fiji  0.6
17 Dec 2020 12:45 Navuti Fiji  0.5
17 Dec 2020 12:45 Nasaga Fiji  0.5
17 Dec 2020 12:45 Rukuruku Fiji  0.5
17 Dec 2020 12:45 Lovoni Fiji  0.5
17 Dec 2020 19:45 Kalokolevu Fiji  0.5
17 Dec 2020 19:45 Suva Fiji  0.5
17 Dec 2020 19:45 Tamavua Fiji  0.5
17 Dec 2020 19:45 Lauthala Bay Fiji  0.5
17 Dec 2020 19:45 Laucala Fiji  0.5
17 Dec 2020 19:30 Gasele Fiji  0.5
17 Dec 2020 19:30 Soso Fiji  0.5
17 Dec 2020 19:30 Kavala Fiji  0.5
17 Dec 2020 19:30 Kaduvu Fiji  0.5
17 Dec 2020 19:30 Nukuvou Fiji  0.5
17 Dec 2020 19:30 Nabouwalu Fiji  0.5
17 Dec 2020 19:30 Vabea Fiji  0.5
17 Dec 2020 18:45 Nauouo Fiji  0.5
17 Dec 2020 18:45 Levuka Fiji  0.5
17 Dec 2020 20:45 Vunisea Fiji  0.5
17 Dec 2020 20:45 Mburelevu Fiji  0.5
17 Dec 2020 20:45 Mokoisa Fiji  0.5
17 Dec 2020 20:45 Naikorokoro Fiji  0.5
17 Dec 2020 20:45 Namara Fiji  0.5
17 Dec 2020 09:45 Ndalomo Fiji  0.5
17 Dec 2020 10:00 Ndenimanu Fiji  0.5
17 Dec 2020 11:30 Momi Fiji  0.5
17 Dec 2020 20:00 Korolevu Fiji  0.5
17 Dec 2020 08:45 Nanduri Fiji  0.4
17 Dec 2020 08:45 Vatutandova Fiji  0.4
17 Dec 2020 08:45 Nasea Fiji  0.4
17 Dec 2020 13:45 Vatukarasa Fiji  0.4
17 Dec 2020 10:15 Navindamu Fiji  0.4
17 Dec 2020 10:15 Nagumu Fiji  0.4
17 Dec 2020 20:00 Nalotu Fiji  0.4
16 Dec 2020 11:45 Natua Fiji  0.4
16 Dec 2020 11:45 Mbangata Fiji  0.4
16 Dec 2020 11:45 Savusavu Fiji  0.4
16 Dec 2020 11:45 Naindi Fiji  0.4
16 Dec 2020 11:45 Korosi Fiji  0.4
17 Dec 2020 20:00 Bouwanga Fiji  0.4
17 Dec 2020 20:00 Taunovo Fiji  0.4
17 Dec 2020 13:45 Cuvu Fiji  0.4
17 Dec 2020 13:45 Sigatoka Fiji  0.4
17 Dec 2020 13:45 Laselase Fiji  0.4
17 Dec 2020 09:30 Nasarowangga Fiji  0.4
17 Dec 2020 11:15 Lomawal Fiji  0.4
17 Dec 2020 19:45 Nasau Fiji  0.4
17 Dec 2020 19:45 Talaulia Fiji  0.4
17 Dec 2020 11:15 Mbatiri Fiji  0.4
18 Dec 2020 13:00 Andako Fiji  0.4
16 Dec 2020 05:00 Lao Fiji  0.4
16 Dec 2020 05:00 Nailou Fiji  0.4
16 Dec 2020 05:00 Nawi Fiji  0.4
16 Dec 2020 05:00 Vunikura Fiji  0.4
16 Dec 2020 05:00 Napuka Fiji  0.4
17 Dec 2020 10:00 Nabouwalu Fiji  0.4
17 Dec 2020 10:00 Naruwai Fiji  0.4
16 Dec 2020 18:30 Ndawara Fiji  0.3
16 Dec 2020 18:30 Waisa Fiji  0.3
17 Dec 2020 19:45 Sawaieke Fiji  0.3
17 Dec 2020 10:00 Thavanga Fiji  0.3
17 Dec 2020 20:00 Korotasere Fiji  0.3
17 Dec 2020 20:00 Naweni Fiji  0.3
17 Dec 2020 20:00 Viani Fiji  0.3
17 Dec 2020 20:00 Ndrekeniwai Fiji  0.3
17 Dec 2020 20:00 Mbangasau Fiji  0.3
17 Dec 2020 18:45 Vione Fiji  0.3
17 Dec 2020 18:45 Dalice Fiji  0.3
17 Dec 2020 13:00 Makongai Fiji  0.3
16 Dec 2020 18:45 Ndaria Fiji  0.3
16 Dec 2020 18:45 Rave-rave Fiji  0.3
16 Dec 2020 20:45 Vunivatu Fiji  0.3
16 Dec 2020 20:45 Navukembuli Fiji  0.3
16 Dec 2020 04:45 Te Puia New Zealand  0.3
16 Dec 2020 04:45 Te Puia Springs New Zealand  0.3
16 Dec 2020 04:45 Tokomaru Bay New Zealand  0.3
16 Dec 2020 04:45 Waipiro New Zealand  0.3
16 Dec 2020 04:45 Waipiro Bay New Zealand  0.3
16 Dec 2020 04:45 Whareponga New Zealand  0.3
16 Dec 2020 04:45 Tuparoa New Zealand  0.3
17 Dec 2020 18:00 Naua Fiji  0.3
17 Dec 2020 19:45 Vandravandra Fiji  0.3
16 Dec 2020 18:45 Nakarambo Fiji  0.3
16 Dec 2020 19:45 Vangai Fiji  0.3
17 Dec 2020 06:00 Namukalau Fiji  0.3
17 Dec 2020 05:00 Malake Fiji  0.3
17 Dec 2020 05:00 Biagunu Fiji  0.3
17 Dec 2020 05:00 Namboutini Fiji  0.3
16 Dec 2020 07:15 Tawake Fiji  0.3
18 Dec 2020 03:45 Keteira Fiji  0.3
17 Dec 2020 12:15 Nakondu Fiji  0.2
17 Dec 2020 12:15 Nathamaki Fiji  0.2
17 Dec 2020 12:15 Nasau Fiji  0.2
16 Dec 2020 05:15 Tairua New Zealand  0.2
16 Dec 2020 05:15 Pauanui New Zealand  0.2
16 Dec 2020 05:15 Opoutere New Zealand  0.2
16 Dec 2020 05:15 Whangamata New Zealand  0.2
16 Dec 2020 15:45 Maketu New Zealand  0.2
16 Dec 2020 15:45 Maniatutu New Zealand  0.2
16 Dec 2020 15:45 Pukehina New Zealand  0.2
16 Dec 2020 15:45 Ohinepanea New Zealand  0.2
16 Dec 2020 15:45 Otamarakau New Zealand  0.2
16 Dec 2020 15:45 Pikowai New Zealand  0.2
16 Dec 2020 11:45 Nukusa Fiji  0.2
16 Dec 2020 19:45 Korovou Fiji  0.2
16 Dec 2020 11:30 Nambouono Fiji  0.2
16 Dec 2020 00:30 Otumoetai New Zealand  0.2
16 Dec 2020 00:30 Mount Maunganui New Zealand  0.2
16 Dec 2020 00:30 Matapihi New Zealand  0.2
16 Dec 2020 00:30 Kairua New Zealand  0.2
16 Dec 2020 00:30 Papamoa New Zealand  0.2
16 Dec 2020 20:00 Elsee Fiji  0.2
16 Dec 2020 20:00 Sumi Fiji  0.2
15 Dec 2020 21:45 Waihi Beach New Zealand  0.2
15 Dec 2020 21:45 Athenree New Zealand  0.2
17 Dec 2020 04:00 Navakawau Fiji  0.2
16 Dec 2020 07:00 Matata New Zealand  0.2
16 Dec 2020 07:00 Awakaponga New Zealand  0.2
15 Dec 2020 21:30 Lower Waiawa New Zealand  0.2
15 Dec 2020 21:30 Torere New Zealand  0.2
15 Dec 2020 21:30 Houpoto New Zealand  0.2
15 Dec 2020 21:30 Omaio New Zealand  0.2
16 Dec 2020 15:30 Thornton New Zealand  0.2
16 Dec 2020 15:30 Poroporo New Zealand  0.2
16 Dec 2020 15:30 Whakatane New Zealand  0.2
18 Dec 2020 04:00 Lakina Tuvalu  0.1
18 Dec 2020 03:45 Tonga Tuvalu  0.1
16 Dec 2020 12:00 Opotiki New Zealand  0.1
18 Dec 2020 04:00 Vaitupu Tuvalu  0.1
17 Dec 2020 01:45 Port Awanui New Zealand  0.1
17 Dec 2020 01:45 Rangitukia New Zealand  0.1
17 Dec 2020 01:45 Horoera New Zealand  0.1
17 Dec 2020 01:45 East Cape New Zealand  0.1
15 Dec 2020 19:45 Ohope Beach New Zealand  0.1
15 Dec 2020 19:45 Waiotahi New Zealand  0.1
16 Dec 2020 04:15 Hicks Bay New Zealand  0.1
16 Dec 2020 04:15 Te Araroa New Zealand  0.1