Overall Green Tropical Cyclone alert for BONGOYO-20 in , Mauritius from 07 Dec 2020 06:00 UTC to 11 Dec 2020 06:00 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 BONGOYO-20

in , Mauritius

07 Dec 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 BONGOYO-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 (10 Dec 09:30 UTC)
Vulnerability	--

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	20 mm	0.5
ECMWF Overall	104 km/h	0.3 m	437 mm	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

104 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 07 Dec 2020 12:00 UTC

See TC classification SSHS

Wind Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

N°	Date (UTC)	Max Winds (km/h)	Pop in Cat. 1 or higher	TS	Cat. 1	Cat. 2	Cat. 3	Cat. 4	Cat. 5
1	06 Dec 2020 12:00	65	-	-	-	-	-	-	-
2	07 Dec 2020 00:00	68	-	-	-	-	-	-	-
3	07 Dec 2020 12:00	101	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 07 Dec 2020 12:00 UTC

Level	Country	Population
100-250 mm	Reunion	1,869
50-100 mm	Reunion	99,038

Rain Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

N°	Date (UTC)	Max Rainfall (mm)	Pop >100mm or higher	50-100	100-250	250-500	500-750	750-1000	>1000	Countries
1	06 Dec 2020 12:00	18	-	-	-	-	-	-	-
2	07 Dec 2020 00:00	19	-	-	-	-	-	-	-
3	07 Dec 2020 12:00	260	2 thousand			-	-	-	-	Reunion

Impact estimation for the next 72h

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StormSurge

0.1 m

The maximum Storm surge height is 0.1m in Point Marianne, British Indian Ocean Territory. This height is estimated for 10 Dec 2020 09:30 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 07 Dec 2020 12:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	10 Dec 2020 09:30	Point Marianne	British Indian Ocean Territory	0.1
	10 Dec 2020 09:30	East Point Plantation	British Indian Ocean Territory	0.1
	10 Dec 2020 06:00	Trou aux Biches	Mauritius	0.1
	10 Dec 2020 06:00	Saint-Antoine	Mauritius	0.1
	10 Dec 2020 06:00	Riviere du Rempart	Mauritius	0.1
	09 Dec 2020 16:30	Maheboug	Mauritius	0.1
	09 Dec 2020 16:30	Grande Reviere Sud Est	Mauritius	0.1
	10 Dec 2020 06:15	Les Avirons	Reunion	0.1
	10 Dec 2020 06:15	Etang Sale	Reunion	0.1
	10 Dec 2020 06:15	Saint-Louis	Reunion	0.1
	10 Dec 2020 06:15	Saint-Pierre	Reunion	0.1
	10 Dec 2020 06:15	Petite Ile	Reunion	0.1
	10 Dec 2020 06:15	Saint-Joseph	Reunion	0.1
	10 Dec 2020 06:15	Saint-Leu	Reunion	0.1
	10 Dec 2020 06:15	Trois Bassins	Reunion	0.1
	10 Dec 2020 06:15	Saint-Paul	Reunion	0.1
	10 Dec 2020 06:15	Le Port	Reunion	0.1
	10 Dec 2020 06:15	La Possession	Reunion	0.1
	10 Dec 2020 06:15	Saint-Denis	Reunion	0.1
	10 Dec 2020 06:15	Saint-Marie	Reunion	0.1
	10 Dec 2020 06:00	Black River	Mauritius	0.1
	10 Dec 2020 06:00	Port Louis	Mauritius	0.1
	10 Dec 2020 06:15	Choisy	Mauritius	0.1
	10 Dec 2020 06:15	Chemin Grenier	Mauritius	0.1
	10 Dec 2020 06:15	Souillac	Mauritius	0.1
	10 Dec 2020 05:45	Sainte-Suzanne	Reunion	0.1
	10 Dec 2020 05:45	Saint-Andre	Reunion	0.1
	10 Dec 2020 05:45	Bras-Panon	Reunion	0.1
	10 Dec 2020 05:45	Saint-Benoit	Reunion	0.1
	09 Dec 2020 16:45	Riche-en-Eau	Mauritius	0.1
	10 Dec 2020 06:15	Saint-Philippe	Reunion	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.