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 18 UTC

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Meteorological source:

GDACS JTWC

Impact Single TC

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	GFS
Exposed countries	American Samoa
Exposed population	No people in Category 1 or higher
Maximum wind speed	65 km/h
Maximum storm surge	0.1 m (23 Feb 16:45 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
GFS Current	65 km/h	0.1 m	114 mm	0.5
GFS Overall	140 km/h	0.2 m	560 mm	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

140 km/h

Up to Few people can be affected by wind speeds of Tropical Storm strength or above

Wind exposed population - AoIs

Estimations based on the bulletin of 20 Feb 2020 18:00 UTC

Category	Country	Population
Tropical Storm	American Samoa	855

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 18:00	97	-		-	-	-	-	-	American Samoa

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Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 20 Feb 2020 18:00 UTC

Level	Country	Population
100-250 mm	Samoa, American Samoa	984	+
	American Samoa	173
	Samoa	811
50-100 mm	Tokelau, Cook Islands, American Samoa	132,169	+
	Tokelau	833
	Cook Islands	299
	American Samoa	54,344
	Samoa	76,693

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 18:00	368	Few people			-	-	-	-	Tokelau, Cook Islands, American Samoa, Samoa

Impact estimation for the next 72h

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StormSurge

0.1 m

The maximum Storm surge height is 0.1m in Nuku'alofa, Tonga. This height is estimated for 23 Feb 2020 16:45 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 18:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	23 Feb 2020 16:45	Nuku'alofa	Tonga	0.1
	23 Feb 2020 16:45	Mua	Tonga	0.1
	23 Feb 2020 16:45	Fatumu	Tonga	0.1
	23 Feb 2020 16:45	Kolonga	Tonga	0.1
	23 Feb 2020 16:45	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.