Overall Green alert Tropical Cyclone for WASI-20
in Samoa, Niue
21 Feb 2020 18 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 HWRF
Exposed countries
Exposed population No people in Category 1 or higher
Maximum wind speed 61 km/h
Maximum storm surge 0.4 m (23 Feb 08:15 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
HWRF Current 61 km/h 0.4 m 316 mm 0.5
HWRF Overall 119 km/h 0.4 m 679 mm 0.5

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

TOP

Wind

119 km/h

No people by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

No exposed population (in Tropical Storm or higher) based on the bulletin of 21 Feb 2020 18:00 UTC

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 58 - - - - - - -
GREEN 2 21 Feb 2020 18:00 83 - - - - - - -
Download:





Impact estimation for the next 72h
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Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 21 Feb 2020 18:00 UTC
LevelCountryPopulation 
250-500 mmSamoa4,562 
100-250 mmSamoa, Tonga65,291
+
Samoa65,276 
Tonga15 
50-100 mmSamoa, American Samoa, Niue, Tonga89,353
+
Samoa85,622 
American Samoa2,473 
Niue1,190 
Tonga68 

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 12:00 369 - - - - - - -
Blue 2 21 Feb 2020 18:00 670 70 thousand
- - - Samoa, American Samoa, Niue, Tonga




Impact estimation for the next 72h
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StormSurge

0.4 m

The maximum Storm surge height is  0.4m in Korosi, Fiji. This height is estimated for 23 Feb 2020 08:15 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 21 Feb 2020 18:00 UTC
    
Alert Date (UTC) Name Country Storm surge height (m)
23 Feb 2020 08:15 Korosi Fiji  0.4
23 Feb 2020 08:15 Korotasere Fiji  0.4
23 Feb 2020 08:15 Naweni Fiji  0.4
23 Feb 2020 08:15 Nakarambo Fiji  0.4
23 Feb 2020 08:15 Viani Fiji  0.4
23 Feb 2020 08:15 Ndrekeniwai Fiji  0.4
23 Feb 2020 08:15 Mbangasau Fiji  0.4
23 Feb 2020 08:15 Malake Fiji  0.3
22 Feb 2020 02:45 Nanduri Fiji  0.3
22 Feb 2020 02:45 Vatutandova Fiji  0.3
22 Feb 2020 15:00 Korovou Fiji  0.3
22 Feb 2020 15:00 Lodoni Fiji  0.3
22 Feb 2020 15:00 Lawaki Fiji  0.3
22 Feb 2020 15:00 Naingani Fiji  0.3
22 Feb 2020 15:00 Navuti Fiji  0.3
22 Feb 2020 15:00 Nasaga Fiji  0.3
22 Feb 2020 15:00 Rukuruku Fiji  0.3
23 Feb 2020 12:00 Biagunu Fiji  0.3
23 Feb 2020 12:00 Lao Fiji  0.3
24 Feb 2020 13:45 Nailou Fiji  0.2
24 Feb 2020 13:45 Nawi Fiji  0.2
24 Feb 2020 13:45 Vunikura Fiji  0.2
21 Feb 2020 23:00 Nailanga Fiji  0.2
21 Feb 2020 23:00 Sorokoba Fiji  0.2
21 Feb 2020 23:00 Ba Fiji  0.2
21 Feb 2020 23:00 Natunuka Fiji  0.2
24 Feb 2020 13:45 Namboutini 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
22 Feb 2020 01:45 Rakiraki Fiji  0.2
22 Feb 2020 01:45 Vaileka Fiji  0.2
22 Feb 2020 01:45 Nanukuloa Fiji  0.2
22 Feb 2020 01:45 Nasau Fiji  0.2
22 Feb 2020 01:45 Nayavutoka Fiji  0.2
21 Feb 2020 19:15 Tavua Fiji  0.2
21 Feb 2020 19:15 Rabulu Fiji  0.2
21 Feb 2020 19:15 Togowere Fiji  0.2
23 Feb 2020 07:15 Vangai Fiji  0.2
22 Feb 2020 06:30 Navinggiri Fiji  0.2
22 Feb 2020 06:30 Yangganga Fiji  0.2
22 Feb 2020 06:30 Nawailevu Fiji  0.2
22 Feb 2020 06:30 Nasarowangga Fiji  0.2
22 Feb 2020 06:30 Navindamu Fiji  0.2
22 Feb 2020 02:45 Rave-rave Fiji  0.2
22 Feb 2020 02:45 Ndawara Fiji  0.2
22 Feb 2020 02:45 Waisa Fiji  0.2
22 Feb 2020 02:45 Natua Fiji  0.2
24 Feb 2020 13:45 Napuka Fiji  0.2
22 Feb 2020 14:45 Lovoni Fiji  0.2
22 Feb 2020 14:45 Nauouo Fiji  0.2
22 Feb 2020 14:45 Levuka Fiji  0.2
22 Feb 2020 02:15 Koroinasolo Fiji  0.2
22 Feb 2020 02:15 Savu Sau Fiji  0.2
22 Feb 2020 02:00 Ndalomo Fiji  0.2
22 Feb 2020 02:30 Mbangata Fiji  0.2
22 Feb 2020 02:30 Savusavu Fiji  0.2
22 Feb 2020 02:30 Naindi Fiji  0.2
24 Feb 2020 13:45 Namukalau Fiji  0.1
24 Feb 2020 13:45 Tawake Fiji  0.1
24 Feb 2020 13:45 Nukusa Fiji  0.1
21 Feb 2020 23:00 Naruwai Fiji  0.1
21 Feb 2020 23:00 Nabouwalu Fiji  0.1
21 Feb 2020 22:45 Mbukama Fiji  0.1
21 Feb 2020 22:45 Yasawairara Fiji  0.1
22 Feb 2020 01:45 Ndenimanu Fiji  0.1
24 Feb 2020 01:30 Kavala Fiji  0.1
24 Feb 2020 01:30 Nabouwalu Fiji  0.1
24 Feb 2020 01:30 Vabea Fiji  0.1
23 Feb 2020 00:15 Nagumu Fiji  0.1
21 Feb 2020 22:15 Thavanga Fiji  0.1
21 Feb 2020 22:00 Ndaria Fiji  0.1
21 Feb 2020 22:15 Makongai Fiji  0.1
22 Feb 2020 15:00 Galoa Fiji  0.1
22 Feb 2020 15:00 Yanutha Fiji  0.1
22 Feb 2020 15:00 Matavuralevu Fiji  0.1
22 Feb 2020 15:00 Pacific Harbour Fiji  0.1
22 Feb 2020 15:00 Waisomo Fiji  0.1
22 Feb 2020 15:00 Dakuimbeqa Fiji  0.1
22 Feb 2020 15:00 Lalati Fiji  0.1
22 Feb 2020 15:00 Navua Fiji  0.1
22 Feb 2020 15:00 Naitionitoni Fiji  0.1
22 Feb 2020 15:00 Mau Fiji  0.1
23 Feb 2020 04:00 Nambouono Fiji  0.1
24 Feb 2020 05:00 Nasea Fiji  0.1
24 Feb 2020 05:00 Vunivatu Fiji  0.1