Overall Green Tropical Cyclone for JOBO-21 in Tanzania, Seychelles from 21 Apr 2021 00:00 UTC to 24 Apr 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 JOBO-21

in Tanzania, Seychelles

24 Apr 2021 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 JOBO-21 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source	GDACS
Exposed countries	Tanzania, Seychelles
Exposed population	No people in Category 1 or higher
Maximum wind speed	111 km/h
Maximum storm surge	0.4 m (24 Apr 17:00 UTC)
Vulnerability	Medium (Tanzania)
Landfall	between 24 Apr 2021 06:00 - 24 Apr 2021 18:00 in Tanzania

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	46 km/h	0.3 m	n.a.	0.5
Overall	111 km/h	0.4 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

46 km/h Current Max.

Up to 320000 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	21 Apr 2021 00:00	130	580 thousand	No people	Seychelles, Tanzania
2	21 Apr 2021 12:00	139	1.6 million	Few people	Seychelles
3	22 Apr 2021 00:00	93	1.2 million	No people	Seychelles, Tanzania
4	22 Apr 2021 12:00	83	750 thousand	No people	Seychelles, Tanzania
5	23 Apr 2021 00:00	83	6.4 million	No people	Seychelles, Tanzania
6	23 Apr 2021 12:00	74	80 thousand	No people	Seychelles, Tanzania
7	23 Apr 2021 18:00	65	5.2 million	No people	Tanzania, Seychelles
8	24 Apr 2021 06:00	65	5.1 million	No people	Tanzania, Seychelles
9	24 Apr 2021 18:00	46	320 thousand	No people	Tanzania, Seychelles

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	21 Apr 2021 00:00	Tropical storm	83	no people	<1000 people	-10, 48.8
2	21 Apr 2021 12:00	Tropical storm	111	no people	<1000 people	-9.7, 47.8
3	22 Apr 2021 00:00	Tropical storm	93	no people	<1000 people	-10.4, 46.5
4	22 Apr 2021 12:00	Tropical storm	83	no people	no people	-9.9, 45.1
5	23 Apr 2021 00:00	Tropical storm	83	no people	no people	-9.2, 43.9
6	23 Apr 2021 12:00	Tropical storm	74	no people	no people	-8.5, 43.4
7	23 Apr 2021 18:00	Tropical storm	65	no people	<1000 people	-8.1, 42.3
8	24 Apr 2021 06:00	Tropical storm	65	no people	5.1 million people	-7.9, 40.7
9	24 Apr 2021 18:00	Tropical depression	46	no people	no people	-8, 39	Tanzania
9	25 Apr 2021 06:00	Tropical depression	37	no people	no people	-8, 38.2	Tanzania

Actual track of the current bulletin

The alert for forecast greater than 3 days is limited to Orange level.

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Exposed population - AoIs

Exposed population in the potential affected countries, provinces and populated places

Countries

Country
Tanzania
Seychelles

Provinces

Region Province	Country
Pwani	Tanzania
Lindi	Tanzania
Seychelles	Seychelles

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)
Mafia	MFA	18	Civ.	Unpaved	No	5200
Assumption Island		3	Civ.	Paved	No	3900

Ports

Name	LOCODE	Country
Kilondoni		Tanzania
Assumption Island		Seychelles
Cosmoledo Island		Seychelles
Astove Island		Seychelles

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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

0.4 m

The maximum Storm surge height is 0.4m in Kisiju, Tanzania. This height is estimated for 24 Apr 2021 17:00 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 (53 locations). Calculation based on advisory number 8 of 24 Apr 2021 06:00:00 UTC. (Simulation using 0.5 minute resolution)

Level	Date (UTC)	Name	Country	Storm surge height (m)
	24 Apr 2021 17:00	Kisiju	Tanzania	0.4
	24 Apr 2021 17:00	Magawa	Tanzania	0.3
	24 Apr 2021 17:00	Msindaji	Tanzania	0.3
	24 Apr 2021 17:00	Dondo	Tanzania	0.3
	24 Apr 2021 17:00	Mpafu	Tanzania	0.3
	24 Apr 2021 18:00	Mchungu	Tanzania	0.3
	24 Apr 2021 18:00	Nyambati	Tanzania	0.3
	24 Apr 2021 18:00	Kiombani	Tanzania	0.3
	24 Apr 2021 07:00	Meronvi	Mozambique	0.3
	24 Apr 2021 07:00	Quissengue	Mozambique	0.2
	24 Apr 2021 07:00	Libambai	Mozambique	0.2
	24 Apr 2021 07:00	Vila de Mocimboa da Praia	Mozambique	0.2
	24 Apr 2021 15:00	Kiechuru	Tanzania	0.2
	24 Apr 2021 16:00	Buuni Village	Tanzania	0.2
	24 Apr 2021 19:00	Somanga	Tanzania	0.2
	24 Apr 2021 12:00	Jimbo	Tanzania	0.2
	24 Apr 2021 16:00	Jaja	Tanzania	0.2
	24 Apr 2021 15:00	Mbwera	Tanzania	0.2
	24 Apr 2021 09:00	Mwera	Tanzania	0.2
	24 Apr 2021 07:00	Bawala	Mozambique	0.2
	24 Apr 2021 07:00	Olumbe	Mozambique	0.2
	24 Apr 2021 16:00	Pombwe	Tanzania	0.2
	24 Apr 2021 07:00	Maganja	Mozambique	0.2
	24 Apr 2021 06:00	Pangane	Mozambique	0.2
	24 Apr 2021 12:00	Kipingwe	Tanzania	0.1
	22 Apr 2021 14:00	Andrafia	Madagascar	0.1
	24 Apr 2021 20:00	Matapatapa	Tanzania	0.1
	23 Apr 2021 13:00	Fumba	Tanzania	0.1
	24 Apr 2021 07:00	Quiterajo	Mozambique	0.1
	24 Apr 2021 18:00	Kilindoni	Tanzania	0.1
	24 Apr 2021 16:00	Kutani	Tanzania	0.1
	22 Apr 2021 14:00	Anjiabe	Madagascar	0.1
	23 Apr 2021 13:00	Kibele	Tanzania	0.1
	22 Apr 2021 15:00	Ampasimena	Madagascar	0.1
	24 Apr 2021 11:00	Mkarangama	Tanzania	0.1
	22 Apr 2021 12:00	Nosy Faly	Madagascar	0.1
	22 Apr 2021 13:00	Ambato	Madagascar	0.1
	24 Apr 2021 09:00	Chole	Tanzania	0.1
	23 Apr 2021 12:00	Uzi	Tanzania	0.1
	23 Apr 2021 13:00	Mchamba Wima	Tanzania	0.1
	23 Apr 2021 00:00	Tavari	Mozambique	0.1
	22 Apr 2021 14:00	Ambatoxavavy	Madagascar	0.1
	24 Apr 2021 07:00	Boala	Mozambique	0.1
	24 Apr 2021 07:00	Quiwia	Mozambique	0.1
	22 Apr 2021 14:00	Ampombilava	Madagascar	0.1
	22 Apr 2021 14:00	Andriana	Madagascar	0.1
	22 Apr 2021 14:00	Ambaramidada	Madagascar	0.1
	24 Apr 2021 17:00	Kirongwe	Tanzania	0.1
	23 Apr 2021 12:00	Marere	Mozambique	0.1
	23 Apr 2021 12:00	Lucete	Mozambique	0.1
	24 Apr 2021 07:00	Palma	Mozambique	0.1
	23 Apr 2021 01:00	Kijini	Tanzania	0.1
	24 Apr 2021 21:00	Msasani	Tanzania	0.1

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.