Overall Green Tropical Cyclone for CHALANE-20 in Mozambique, Zimbabwe, Madagascar, Botswana from 24 Dec 2020 18:00 UTC to 30 Dec 2020 06:00 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 CHALANE-20

in Mozambique, Zimbabwe, Madagascar, Botswana

30 Dec 2020 06 UTC

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Meteorological source:

GDACS JTWC

Impact Single TC

Impact based on all weather systems in the area

Impact

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

Meteorological source	GDACS
Exposed countries	Mozambique, Zimbabwe, Madagascar, Botswana
Exposed population	No people in Category 1 or higher
Maximum wind speed	111 km/h
Maximum storm surge	1.1 m (30 Dec 05:00 UTC)
Vulnerability	High (Madagascar)
Landfall	between 29 Dec 2020 18:00 - 30 Dec 2020 06:00 in Mozambique

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	0.7 m	n.a.	0.5
Overall	111 km/h	1.1 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 10.8 million 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	24 Dec 2020 18:00	93	9.3 million	No people	Madagascar
2	25 Dec 2020 06:00	83	3.6 million	No people	Madagascar
3	25 Dec 2020 18:00	83	5.4 million	No people	Madagascar, Mozambique, Zimbabwe
4	26 Dec 2020 06:00	83	5.5 million	No people	Madagascar, Mozambique, Zimbabwe
5	26 Dec 2020 18:00	83	8.8 million	No people	Madagascar, Mozambique, Zimbabwe, Botswana
6	27 Dec 2020 06:00	93	10.9 million	No people	Madagascar, Mozambique, Zimbabwe
7	27 Dec 2020 18:00	120	11.5 million	100 thousand	Mozambique
8	28 Dec 2020 06:00	120	11.3 million	560 thousand	Mozambique, Zimbabwe
9	28 Dec 2020 18:00	102	11.6 million	No people	Madagascar, Mozambique, Zimbabwe, Botswana
10	29 Dec 2020 06:00	111	8.7 million	No people	Mozambique, Madagascar, Zimbabwe
11	29 Dec 2020 18:00	111	8.9 million	No people	Mozambique, Zimbabwe, Madagascar
12	30 Dec 2020 06:00	83	10.8 million	No people	Mozambique, Zimbabwe, Madagascar

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	24 Dec 2020 18:00	Tropical storm	65	no people	no people	-15.8, 57.4
2	25 Dec 2020 06:00	Tropical storm	65	no people	no people	-15.9, 55.6
3	25 Dec 2020 18:00	Tropical storm	65	no people	no people	-16.2, 53.7
4	26 Dec 2020 06:00	Tropical storm	65	no people	210000 people	-16.1, 52.4
5	26 Dec 2020 18:00	Tropical storm	65	no people	6.7 million people	-17.6, 49.7
6	27 Dec 2020 06:00	Tropical depression	46	no people	no people	-18.1, 47.6	Madagascar
7	27 Dec 2020 18:00	Tropical depression	56	no people	140000 people	-19.2, 45.6	Madagascar
8	28 Dec 2020 06:00	Tropical storm	65	no people	no people	-20, 43.7
9	28 Dec 2020 18:00	Tropical storm	74	no people	no people	-20, 41.6
10	29 Dec 2020 06:00	Tropical storm	83	no people	no people	-19.6, 39.9
11	29 Dec 2020 18:00	Tropical storm	111	no people	1.2 million people	-19.7, 37.7
12	30 Dec 2020 06:00	Tropical storm	83	no people	4.7 million people	-19.4, 34.6	Mozambique
12	30 Dec 2020 18:00	Tropical depression	56	no people	no people	-19.6, 31.7	Zimbabwe
12	31 Dec 2020 06:00	Tropical depression	37	no people	no people	-20.1, 28.5	Zimbabwe

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.