Overall Green Tropical Cyclone for WASI-20 in Samoa, Niue from 21 Feb 2020 12:00 UTC to 23 Feb 2020 12:00 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve awareness, information exchange and coordination in the first phase after major sudden-onset disasters.

Overall Green Tropical Cyclone for WASI-20

in Samoa, Niue

23 Feb 2020 12 UTC

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Meteorological source:

GDACS JTWC

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	GDACS
Exposed countries	Samoa, Niue
Exposed population	No people in Category 1 or higher
Maximum wind speed	102 km/h
Maximum storm surge	0.2 m (23 Feb 20:00 UTC)
Vulnerability	Medium (Samoa)

GDACS Score

GDACS score for Tropical Cyclones is 0.5 (GREEN Level), 1.5 (ORANGE Level), 2.5 (RED Level)
For more info on GDACS core click here.

	Wind	Storm surge	Rainfall	GDACS score
Current	46 km/h	0.2 m	n.a.	0.5
Overall	102 km/h	0.2 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

46 km/h Current Max.

Up to 120000 people in Tropical Storm strength or higher (see SSHS)

Impact Timeline

N°	Date (UTC)	Max Winds (km/h)	Population in Tropical Storm or higher	Population in Cat 1. or higher	Countries
1	21 Feb 2020 12:00	83	200 thousand	No people	Samoa
2	21 Feb 2020 18:00	74	10 thousand	No people	Samoa
3	22 Feb 2020 00:00	102	200 thousand	No people	Samoa, Niue
4	22 Feb 2020 06:00	120	190 thousand	No people	Samoa, Niue
5	22 Feb 2020 12:00	111	120 thousand	No people	Samoa, Niue
6	22 Feb 2020 18:00	93	120 thousand	No people	Samoa, Niue
7	23 Feb 2020 00:00	83	120 thousand	No people	Samoa, Niue
8	23 Feb 2020 06:00	74	120 thousand	No people	Niue, Samoa
9	23 Feb 2020 12:00	46	120 thousand	No people	Samoa

Bulletin Timeline

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
1	21 Feb 2020 12:00	Tropical depression	56	no people	no people	-12.7, -175.2
2	21 Feb 2020 18:00	Tropical depression	56	no people	13000 people	-13.2, -174.3	Samoa
3	22 Feb 2020 00:00	Tropical storm	83	no people	200000 people	-13.4, -173.3	Samoa
4	22 Feb 2020 06:00	Tropical storm	102	no people	190000 people	-14, -172.7	Samoa
5	22 Feb 2020 12:00	Tropical storm	83	no people	58000 people	-14.5, -172.2	Samoa
6	22 Feb 2020 18:00	Tropical storm	83	no people	no people	-15.1, -172
7	23 Feb 2020 00:00	Tropical storm	74	no people	no people	-16.2, -171.4
8	23 Feb 2020 06:00	Tropical storm	74	no people	1200 people	-17, -171	Niue
9	23 Feb 2020 12:00	Tropical depression	46	no people	no people	-17.2, -171
9	24 Feb 2020 00:00	Tropical depression	37	no people	no people	-18.8, -170.5	Niue

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
Samoa

Provinces

Region Province	Country
Samoa	Samoa

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)
Lalomalava	LAV	unknown				0
Faleolo	APW	18	Civ.	Paved	Yes	8800
Maota	MXS	unknown				0

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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

0.2 m

The maximum Storm surge height is 0.2m in Alofi, Niue. This height is estimated for 23 Feb 2020 20:00 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 (20 locations). Calculation based on advisory number 8 of 23 Feb 2020 06:00:00 UTC. (Simulation using 0.5 minute resolution)

Level	Date (UTC)	Name	Country	Storm surge height (m)
	23 Feb 2020 20:00	Alofi	Niue	0.2
	23 Feb 2020 20:00	Avatele	Niue	0.2
	22 Feb 2020 02:00	Falealupo	Samoa	0.1
	22 Feb 2020 04:00	Falelima	Samoa	0.1
	22 Feb 2020 04:00	Leagiaga	Samoa	0.1
	22 Feb 2020 07:00	Gautavai	Samoa	0.1
	22 Feb 2020 07:00	Satupaitea	Samoa	0.1
	22 Feb 2020 08:00	Salelologa	Samoa	0.1
	23 Feb 2020 20:00	Mutalau	Niue	0.1
	23 Feb 2020 20:00	Lakepa	Niue	0.1
	23 Feb 2020 20:00	Hakupu	Niue	0.1
	22 Feb 2020 09:00	Samatau	Samoa	0.1
	22 Feb 2020 09:00	Fuailalo	Samoa	0.1
	22 Feb 2020 05:00	Salailua	Samoa	0.1
	22 Feb 2020 10:00	Faleaseela	Samoa	0.1
	22 Feb 2020 10:00	Matautu	Samoa	0.1
	23 Feb 2020 20:00	Liku	Niue	0.1
	22 Feb 2020 05:00	Fagamalo	Samoa	0.1
	22 Feb 2020 01:00	Sasina	Samoa	0.1
	22 Feb 2020 07:00	Tuasivi	Samoa	0.1

Disclaimer - Copyright
While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.
The designations employed and the presentation of material on the map do not imply the expression of any opinion whatsoever on the part of the European Union concerning the legal status of any country, territory or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.