Overall Green Tropical Cyclone for RUBY-21 in New Caledonia from 11 Dec 2021 18:00 UTC to 14 Dec 2021 18:00 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 RUBY-21

in New Caledonia

14 Dec 2021 18 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 RUBY-21 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source	GDACS
Exposed countries	New Caledonia
Exposed population	Few people in Category 1 or higher
Maximum wind speed	130 km/h
Maximum storm surge	0.6 m (13 Dec 20:00 UTC)
Vulnerability	Medium (New Caledonia)
Landfall	between 13 Dec 2021 12:00 - 13 Dec 2021 18:00 in New Caledonia

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	83 km/h	0.2 m	n.a.	0.5
Overall	130 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

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Wind

83 km/h Current Max.

Up to 280000 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	11 Dec 2021 18:00	139	310 thousand	20 thousand	New Caledonia
2	12 Dec 2021 00:00	148	280 thousand	40 thousand	New Caledonia
3	12 Dec 2021 06:00	157	280 thousand	10 thousand	New Caledonia
4	12 Dec 2021 12:00	157	280 thousand	20 thousand	New Caledonia
5	12 Dec 2021 18:00	157	280 thousand	9 thousand	New Caledonia
6	13 Dec 2021 00:00	148	300 thousand	20 thousand	New Caledonia
7	13 Dec 2021 06:00	139	280 thousand	10 thousand	New Caledonia
8	13 Dec 2021 12:00	130	280 thousand	10 thousand	New Caledonia
9	13 Dec 2021 18:00	111	280 thousand	Few people	New Caledonia
10	14 Dec 2021 00:00	102	280 thousand	Few people	New Caledonia
11	14 Dec 2021 06:00	93	280 thousand	Few people	New Caledonia
12	14 Dec 2021 12:00	83	280 thousand	Few people	New Caledonia
13	14 Dec 2021 18:00	83	280 thousand	Few people	New Caledonia

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	11 Dec 2021 18:00	Tropical storm	65	no people	no people	-12.8, 156.9
2	12 Dec 2021 00:00	Tropical storm	65	no people	no people	-14.1, 157.1
3	12 Dec 2021 06:00	Tropical storm	83	no people	no people	-14.8, 157.7
4	12 Dec 2021 12:00	Tropical storm	93	no people	no people	-15.8, 158.2
5	12 Dec 2021 18:00	Category 1	120	no people	no people	-16.4, 158.8
6	13 Dec 2021 00:00	Category 1	130	no people	no people	-17, 159.7
7	13 Dec 2021 06:00	Category 1	120	<1000 people	26000 people	-18.1, 161
8	13 Dec 2021 12:00	Category 1	120	9300 people	99000 people	-19.2, 162.3
9	13 Dec 2021 18:00	Tropical storm	111	no people	280000 people	-20.1, 163.8	New Caledonia
10	14 Dec 2021 00:00	Tropical storm	102	no people	270000 people	-21.2, 165.5	New Caledonia
11	14 Dec 2021 06:00	Tropical storm	83	no people	27000 people	-22, 167.4
12	14 Dec 2021 12:00	Tropical storm	83	no people	8000 people	-23.3, 169
13	14 Dec 2021 18:00	Tropical storm	83	no people	no people	-24.3, 170.5
13	15 Dec 2021 06:00	Tropical storm	83	no people	no people	-27.8, 174.5

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

Source: GADM and GHSL

Provinces

Source: GADM and GHSL

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

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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

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.

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.