Overall Green Tropical Cyclone alert for IAN-14 in Tonga from 06 Jan 2014 06:00 UTC to 09 Jan 2014 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 IAN-14

in Tonga

09 Jan 2014 18 UTC

click on

to select bulletin time

Meteorological source:

Impact Single TC

Impact based on all weather systems in the area

Impact

Tropical Cyclone IAN-14 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source	GDACS
Exposed countries	Tonga
Exposed population	No people in Category 1 or higher
Maximum wind speed	232 km/h
Maximum storm surge	0.6 m (11 Jan 01:00 UTC)
Vulnerability	Medium (Tonga)

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
Current	195 km/h	0.6 m	n.a.	2.5
Overall	232 km/h	0.6 m	n.a.	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track) based on GDACS impact

TOP

Wind

195 km/h Current Max.

Up to 23000 people in Category 1 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	05 Jan 2014 18:00	93	No people	No people
2	06 Jan 2014 06:00	93	No people	No people	Tonga
3	06 Jan 2014 18:00	101	No people	No people	Tonga
4	07 Jan 2014 06:00	101	No people	No people	Tonga
5	07 Jan 2014 18:00	138	No people	No people	Tonga
6	08 Jan 2014 06:00	158	No people	No people	Tonga
7	08 Jan 2014 18:00	185	No people	20 thousand	Tonga
8	09 Jan 2014 06:00	175	No people	20 thousand	Tonga
9	09 Jan 2014 18:00	195	No people	20 thousand	Tonga

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	1/5/2014 6:00:00 PM	Tropical storm	64	no people	no people	-18.9, -175.5
2	1/6/2014 6:00:00 AM	Tropical storm	64	no people	no people	-19, -175.5
3	1/6/2014 6:00:00 PM	Tropical storm	64	no people	no people	-18.9, -176
4	1/7/2014 6:00:00 AM	Tropical storm	64	no people	no people	-17.8, -176.1
5	1/7/2014 6:00:00 PM	Tropical storm	84	no people	no people	-17, -176.7
6	1/8/2014 6:00:00 AM	Tropical storm	101	no people	no people	-16.8, -177
7	1/8/2014 6:00:00 PM	Tropical storm	111	no people	no people	-16.7, -176.8
8	1/9/2014 6:00:00 AM	Category 2	158	no people	no people	-16.8, -176.5
9	1/9/2014 6:00:00 PM	Category 2	167	no people	no people	-17.1, -175.8
9	1/10/2014 6:00:00 AM	Category 3	195	18000 people	26000 people	-17.8, -175	Tonga
9	1/10/2014 6:00:00 PM	Category 3	195	23000 people	100000 people	-18.7, -174.3	Tonga
9	1/11/2014 6:00:00 AM	Category 3	185	no people	120000 people	-19.8, -173.8	Tonga
9	1/11/2014 6:00:00 PM	Category 2	167	no people	15000 people	-21.3, -173.1	Tonga
9	1/12/2014 6:00:00 PM	Category 1	148	no people	no people	-24.6, -172.1
9	1/13/2014 6:00:00 PM	Category 1	121	no people	no people	-29, -169.8
9	1/14/2014 6:00:00 PM	Tropical storm	93	no people	no people	-34.2, -164.5

Tropical disturbance/Weak low pressure area/Remnant low (Vmax < 51 km/h), see WMO

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

Provinces

Country	Region Province
Tonga	Tonga

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)
Vavau International	VAV	72	Civ.	Unpaved	Yes	5500
Haapai	HPA	12	Civ.	Unpaved	Yes	3900

Ports

Name	LOCODE	Country
Neiafu	TONEI	Tonga
Pangai	TOPAN	Tonga

TOP

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.

...

TOP

StormSurge

0.6 m

The maximum Storm surge height is 0.6m in Pangai, Tonga. This height is estimated for 11 Jan 2014 01:00 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 (1 locations). Calculation based on advisory number 17 of 13 Jan 2014 18:00:00 UTC. (Simulation using 6 minute resolution)

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	11 Jan 2014 01:00	Pangai	Tonga	0.6

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.