Overall Green Tropical Cyclone alert for VICKY-20 in Niue, American Samoa, Samoa from 20 Feb 2020 18:00 UTC to 21 Feb 2020 18:00 UTC

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

Overall Green alert Tropical Cyclone for VICKY-20

in Niue, American Samoa, Samoa

20 Feb 2020 12 UTC

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Meteorological source:

GDACS JTWC

Impact Single TC

GFS
HWRF
ECMWF

Impact based on all weather systems in the area

Impact

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

Meteorological source	ECMWF
Exposed countries
Exposed population	No people in Category 1 or higher
Maximum wind speed	72 km/h
Maximum storm surge	0.1 m (20 Feb 23:15 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
ECMWF Current	72 km/h	0.1 m	186 mm	0.5
ECMWF Overall	79 km/h	0.2 m	490 mm	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

79 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 20 Feb 2020 12:00 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
	1	20 Feb 2020 00:00	72	-	-	-	-	-	-	-
	2	20 Feb 2020 12:00	72	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 20 Feb 2020 12:00 UTC

Level	Country	Population
100-250 mm	American Samoa	11,689	+
	American Samoa	17
	Samoa	11,672
50-100 mm	Tokelau, Samoa, American Samoa, Tonga, Niue	238,757	+
	Tokelau	1,337
	American Samoa	54,500
	Samoa	181,605
	Tonga	125
	Niue	1,190

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
	1	20 Feb 2020 00:00	124	-		-	-	-	-	-	Samoa, American Samoa
	2	20 Feb 2020 12:00	621	10 thousand			-	-	-	-	Tokelau, American Samoa, Samoa, Tonga, Niue

Impact estimation for the next 72h

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StormSurge

0.1 m

The maximum Storm surge height is 0.1m in Utuavanua, Samoa. This height is estimated for 20 Feb 2020 23:15 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 20 Feb 2020 12:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	20 Feb 2020 23:15	Utuavanua	Samoa	0.1
	20 Feb 2020 23:15	Apia	Samoa	0.1
	20 Feb 2020 23:15	Solosolo	Samoa	0.1
	23 Feb 2020 04:00	Poutasi	Samoa	0.1
	23 Feb 2020 04:00	Amaile	Samoa	0.1
	20 Feb 2020 15:30	Lotofago	Samoa	0.1
	23 Feb 2020 01:15	Samatau	Samoa	0.1
	23 Feb 2020 01:15	Fuailalo	Samoa	0.1
	23 Feb 2020 01:15	Fasitootai	Samoa	0.1
	23 Feb 2020 01:15	Faleaseela	Samoa	0.1
	23 Feb 2020 01:15	Saleimoa	Samoa	0.1
	20 Feb 2020 19:00	Hihifo	Tonga	0.1
	20 Feb 2020 19:00	Falehau	Tonga	0.1
	20 Feb 2020 14:45	Satupaitea	Samoa	0.1
	20 Feb 2020 14:45	Puapua	Samoa	0.1
	20 Feb 2020 14:45	Salelologa	Samoa	0.1
	20 Feb 2020 14:45	Tuasivi	Samoa	0.1
	23 Feb 2020 11:30	Nuku'alofa	Tonga	0.1
	23 Feb 2020 11:30	Mua	Tonga	0.1
	23 Feb 2020 11:30	Fatumu	Tonga	0.1
	23 Feb 2020 11:30	Kolonga	Tonga	0.1
	23 Feb 2020 11:30	Niutoua	Tonga	0.1

Disclaimer
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.