Overall Green alert Tropical Cyclone for WASI-20
in Samoa, Niue
24 Feb 2020 00 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

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

Meteorological source GFS
Exposed countries Samoa
Exposed population 3 thousand in Category 1 or higher
Maximum wind speed 140 km/h
Maximum storm surge 0.4 m (22 Feb 15:15 UTC)
Vulnerability Medium (Samoa)

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
GFS Current 140 km/h 0.4 m 436 mm 0.5
GFS Overall 140 km/h 0.4 m 436 mm 0.5

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

TOP

Wind

140 km/h

Up to 3 thousand in Category 1 strength or higher (see SSHS)



Wind exposed population - AoIs

Estimations based on the bulletin of 24 Feb 2020 00:00 UTC (Overall situation)
CategoryCountryPopulation 
CAT. 1Samoa2,587 
Tropical StormSamoa185,183 

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 21 Feb 2020 12:00 83 - - - - - - -
GREEN 2 21 Feb 2020 18:00 83 - - - - - - -
GREEN 3 22 Feb 2020 00:00 115 -
- - - - - Samoa
GREEN 4 22 Feb 2020 06:00 140 3 thousand
- - - - Samoa
GREEN 5 22 Feb 2020 12:00 101 -
- - - - - Samoa
GREEN 6 22 Feb 2020 18:00 104 - - - - - - -
GREEN 7 23 Feb 2020 00:00 101 - - - - - - -
GREEN 8 23 Feb 2020 06:00 68 - - - - - - -
GREEN 9 23 Feb 2020 12:00 58 - - - - - - -
GREEN 10 23 Feb 2020 18:00 65 - - - - - - -
GREEN 11 24 Feb 2020 00:00 50 - - - - - - -
Download:





Impact estimation for the next 72h
TOP

Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 24 Feb 2020 00:00 UTC (Overall situation)
LevelCountryPopulation 
100-250 mmTuvalu, Tokelau, Cook Islands, American Samoa221,160
+
Tuvalu1,795 
Tokelau1,337 
Cook Islands257 
American Samoa49,023 
Samoa168,748 
50-100 mmTuvalu, Cook Islands, Samoa, American Samoa39,624
+
Tuvalu6,174 
Cook Islands76 
American Samoa5,494 
Samoa27,880 

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 21 Feb 2020 12:00 230 - - - - - - -
Blue 2 21 Feb 2020 18:00 218 - - - - - - -
Blue 3 22 Feb 2020 00:00 174 -
- - - - - Samoa
Blue 4 22 Feb 2020 06:00 177 -
- - - - - Samoa
Blue 5 22 Feb 2020 12:00 109 - - - - - - -
Blue 6 22 Feb 2020 18:00 94 - - - - - - -
Blue 7 23 Feb 2020 00:00 153 - - - - - - -
Blue 8 23 Feb 2020 06:00 88 -
- - - - - Tokelau
Blue 9 23 Feb 2020 12:00 84 - - - - - - -
Blue 10 23 Feb 2020 18:00 80 - - - - - - -
Blue 11 24 Feb 2020 00:00 182 -
- - - - - Tokelau




Impact estimation for the next 72h
TOP

StormSurge

0.4 m

The maximum Storm surge height is  0.4m in Korovou, Fiji. This height is estimated for 22 Feb 2020 15:15 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 24 Feb 2020 00:00 UTC (Overall situation)
    
Alert Date (UTC) Name Country Storm surge height (m)
22 Feb 2020 15:15 Korovou Fiji  0.4
22 Feb 2020 15:15 Lodoni Fiji  0.4
22 Feb 2020 15:15 Lawaki Fiji  0.4
22 Feb 2020 15:15 Naingani Fiji  0.4
22 Feb 2020 15:15 Navuti Fiji  0.4
22 Feb 2020 15:15 Nasaga Fiji  0.4
22 Feb 2020 15:15 Rukuruku Fiji  0.4
23 Feb 2020 08:15 Korosi Fiji  0.3
23 Feb 2020 08:15 Korotasere Fiji  0.3
23 Feb 2020 08:15 Naweni Fiji  0.3
23 Feb 2020 08:15 Nakarambo Fiji  0.3
23 Feb 2020 08:15 Viani Fiji  0.3
23 Feb 2020 08:15 Ndrekeniwai Fiji  0.3
23 Feb 2020 08:15 Mbangasau Fiji  0.3
23 Feb 2020 12:00 Lao Fiji  0.3
23 Feb 2020 12:00 Nailou Fiji  0.3
23 Feb 2020 12:00 Vangai Fiji  0.3
23 Feb 2020 12:00 Nawi Fiji  0.3
23 Feb 2020 12:00 Vunikura Fiji  0.3
23 Feb 2020 20:00 Malake Fiji  0.3
23 Feb 2020 20:00 Biagunu Fiji  0.3
23 Feb 2020 20:00 Namboutini Fiji  0.3
23 Feb 2020 20:00 Napuka Fiji  0.3
22 Feb 2020 15:00 Lovoni Fiji  0.3
22 Feb 2020 15:00 Nauouo Fiji  0.3
22 Feb 2020 15:00 Levuka Fiji  0.3
25 Feb 2020 14:15 Navinggiri Fiji  0.3
25 Feb 2020 14:15 Yangganga Fiji  0.3
25 Feb 2020 14:15 Nawailevu Fiji  0.3
25 Feb 2020 14:15 Nasarowangga Fiji  0.3
25 Feb 2020 14:15 Navindamu Fiji  0.3
22 Feb 2020 18:45 Nanduri Fiji  0.3
22 Feb 2020 18:45 Vatutandova Fiji  0.3
23 Feb 2020 00:45 Natunuka Fiji  0.3
23 Feb 2020 00:45 Tavua Fiji  0.3
23 Feb 2020 00:45 Rabulu Fiji  0.3
23 Feb 2020 00:45 Togowere Fiji  0.3
22 Feb 2020 02:45 Nailanga Fiji  0.2
22 Feb 2020 02:45 Sorokoba Fiji  0.2
22 Feb 2020 02:45 Ba Fiji  0.2
22 Feb 2020 15:45 Kasavu Fiji  0.2
22 Feb 2020 15:45 Nausori Fiji  0.2
22 Feb 2020 15:45 Lokia Fiji  0.2
22 Feb 2020 15:45 Naimasimasi Fiji  0.2
22 Feb 2020 15:45 Ucunivanua Fiji  0.2
22 Feb 2020 15:45 Cautata Fiji  0.2
22 Feb 2020 15:45 Nasilai Fiji  0.2
22 Feb 2020 15:45 Dromuna Fiji  0.2
23 Feb 2020 04:00 Koroinasolo Fiji  0.2
23 Feb 2020 04:00 Savu Sau Fiji  0.2
22 Feb 2020 14:45 Rave-rave Fiji  0.2
22 Feb 2020 14:45 Ndawara Fiji  0.2
22 Feb 2020 14:45 Waisa Fiji  0.2
22 Feb 2020 14:45 Natua Fiji  0.2
23 Feb 2020 08:45 Namukalau Fiji  0.2
23 Feb 2020 08:45 Tawake Fiji  0.2
23 Feb 2020 08:45 Nukusa Fiji  0.2
24 Feb 2020 04:45 Rakiraki Fiji  0.2
24 Feb 2020 04:45 Vaileka Fiji  0.2
24 Feb 2020 04:45 Nanukuloa Fiji  0.2
24 Feb 2020 04:45 Nasau Fiji  0.2
22 Feb 2020 14:15 Nayavutoka Fiji  0.2
22 Feb 2020 02:45 Nagumu Fiji  0.2
23 Feb 2020 08:45 Nambouono Fiji  0.2
23 Feb 2020 04:15 Ndalomo Fiji  0.2
24 Feb 2020 03:45 Mbangata Fiji  0.2
24 Feb 2020 03:45 Savusavu Fiji  0.2
24 Feb 2020 03:45 Naindi Fiji  0.2
23 Feb 2020 04:15 Ndenimanu Fiji  0.2
25 Feb 2020 17:30 Nasea Fiji  0.1
25 Feb 2020 17:30 Vunivatu Fiji  0.1
25 Feb 2020 10:45 Kavala Fiji  0.1
25 Feb 2020 10:45 Nabouwalu Fiji  0.1
25 Feb 2020 10:45 Vabea Fiji  0.1
25 Feb 2020 10:30 Galoa Fiji  0.1
25 Feb 2020 10:30 Yanutha Fiji  0.1
25 Feb 2020 10:30 Matavuralevu Fiji  0.1
25 Feb 2020 10:30 Pacific Harbour Fiji  0.1
25 Feb 2020 10:30 Waisomo Fiji  0.1
25 Feb 2020 10:30 Dakuimbeqa Fiji  0.1
25 Feb 2020 10:30 Lalati Fiji  0.1
25 Feb 2020 10:30 Navua Fiji  0.1
25 Feb 2020 10:30 Naitionitoni Fiji  0.1
25 Feb 2020 10:30 Mau Fiji  0.1
23 Feb 2020 08:30 Naruwai Fiji  0.1
23 Feb 2020 08:30 Nabouwalu Fiji  0.1
23 Feb 2020 08:30 Thavanga Fiji  0.1
23 Feb 2020 08:30 Ndaria Fiji  0.1
23 Feb 2020 03:45 Navukembuli Fiji  0.1
23 Feb 2020 03:45 Naua Fiji  0.1
25 Feb 2020 10:30 Korovisilou Fiji  0.1
24 Feb 2020 22:00 Mbukama Fiji  0.1
24 Feb 2020 22:00 Yasawairara Fiji  0.1
27 Feb 2020 00:00 Makongai Fiji  0.1
25 Feb 2020 05:45 Vatukarasa Fiji  0.1
25 Feb 2020 05:45 Korolevu Fiji  0.1
24 Feb 2020 09:30 Nasau Fiji  0.1
24 Feb 2020 09:30 Talaulia Fiji  0.1
24 Feb 2020 09:30 Nalotu Fiji  0.1
24 Feb 2020 09:30 Vunisea Fiji  0.1
24 Feb 2020 09:30 Mburelevu Fiji  0.1
24 Feb 2020 09:30 Mokoisa Fiji  0.1
24 Feb 2020 09:30 Naikorokoro Fiji  0.1
24 Feb 2020 09:30 Namara Fiji  0.1
24 Feb 2020 09:30 Gasele Fiji  0.1
25 Feb 2020 05:45 Taunovo Fiji  0.1
25 Feb 2020 06:15 Keteira Fiji  0.1
25 Feb 2020 05:45 Bouwanga Fiji  0.1