Overall Orange Tropical Cyclone alert for HIDAYA-24 in Tanzania, Seychelles, Comoros from 01 May 2024 00:00 UTC to 04 May 2024 00:00 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 Orange alert Tropical Cyclone for HIDAYA-24

in Tanzania, Seychelles, Comoros

04 May 2024 00 UTC

click on

to select bulletin time

Meteorological source:

WMO-RSMC La Réunion
Primary source
GDACS JTWC

Impact Single TC

Impact based on all weather systems in the area

Impact

Tropical Cyclone HIDAYA-24 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	139 km/h
Maximum storm surge	0.4 m (04 May 14:00 UTC)
Vulnerability	Medium (Comoros)
Landfall	between 04 May 2024 12:00 - 05 May 2024 00:00 in Tanzania

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	102 km/h	0.4 m	n.a.	0.5
Overall	139 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

TOP

Wind

102 km/h Current Max.

Up to 10.3 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	01 May 2024 12:00	93	10.7 million	No people	Seychelles, Tanzania
2	02 May 2024 00:00	93	210 thousand	No people	Seychelles, Tanzania
3	02 May 2024 12:00	120	10.6 million	No people	Seychelles, Tanzania
4	03 May 2024 00:00	167	10 million	10 thousand	Seychelles, Tanzania
5	03 May 2024 12:00	139	11.4 million	40 thousand	Tanzania, Seychelles
6	04 May 2024 00:00	102	10.3 million	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	01 May 2024 12:00	Tropical storm	65	no people	no people	-8.6, 45.1
2	02 May 2024 00:00	Tropical storm	65	no people	<1000 people	-9.1, 44.6
3	02 May 2024 12:00	Tropical storm	93	no people	<1000 people	-8.7, 44.1
4	03 May 2024 00:00	Category 1	139	no people	no people	-8.8, 43.3
5	03 May 2024 12:00	Category 1	139	no people	4.3 million people	-8.2, 42
6	04 May 2024 00:00	Tropical storm	102	no people	8.1 million people	-7.9, 40.8
6	04 May 2024 12:00	Tropical storm	74	no people	10.3 million people	-7.3, 39.7
6	05 May 2024 00:00	Tropical depression	56	no people	no people	-6.1, 38.7	Tanzania
6	05 May 2024 12:00	Tropical depression	46	no people	no people	-5, 38.4	Tanzania

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

Country	Population in Tropical Storm or higher strength
Tanzania	10.1 million people
Seychelles	<1000 people

Provinces

Region Province	Country	Population in Tropical Storm or higher strength
Pwani	Tanzania	2.1 million people
Lindi	Tanzania	21000 people
Dar es Salaam	Tanzania	6.3 million people
Zanzibar Central/South	Tanzania	150000 people
Zanzibar Urban/West	Tanzania	860000 people
Zanzibar North	Tanzania	230000 people
Morogoro	Tanzania	23000 people
Tanga	Tanzania	390000 people
Seychelles	Seychelles	<1000 people

Populated places

Name	Region Province	Country	City class	Population
Dar es Salaam	Dar-es-Salaam	Tanzania	Major city	2.7 million people
Zanzibar	Mjini-Magharibi (Zanzibar Urban/West)	Tanzania	Major city	400000 people

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
Dar Es Salaam	DAR	55	Civ.	Paved	Yes	9800
Zanzibar	ZNZ	16	Civ.	Paved	Yes	8000
Ngerengere		226				0
Assumption Island		3	Civ.	Paved	No	3900

Ports

Name	LOCODE	Country
Kilondoni		Tanzania
Kisiju		Tanzania
Mjimwema Terminal		Tanzania
Dar-es-Salaam	TZDAR	Tanzania
Zanzibar	TZZNZ	Tanzania
Pangani	TZPAN	Tanzania
Assumption Island		Seychelles

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

0.4 m

The maximum Storm surge height is 0.4m in Dondo, Tanzania. This height is estimated for 04 May 2024 14:00 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 (83 locations). Calculation based on advisory number 6 of 04 May 2024 00:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	04 May 2024 14:00	Dondo	Tanzania	0.4
	04 May 2024 14:00	Mpafu	Tanzania	0.4
	04 May 2024 14:00	Buuni Village	Tanzania	0.4
	04 May 2024 14:00	Kisiju	Tanzania	0.4
	04 May 2024 22:00	Mkadini	Tanzania	0.3
	04 May 2024 14:00	Magawa	Tanzania	0.3
	04 May 2024 14:00	Msindaji	Tanzania	0.3
	04 May 2024 09:00	Mchungu	Tanzania	0.3
	04 May 2024 09:00	Nyambati	Tanzania	0.3
	04 May 2024 09:00	Kiombani	Tanzania	0.3
	05 May 2024 02:00	Sadani	Tanzania	0.2
	04 May 2024 10:00	Mbwera	Tanzania	0.2
	04 May 2024 10:00	Kiechuru	Tanzania	0.2
	02 May 2024 00:00	Palma	Mozambique	0.2
	04 May 2024 05:00	Mwera	Tanzania	0.2
	04 May 2024 07:00	Jimbo	Tanzania	0.2
	04 May 2024 13:00	Jaja	Tanzania	0.2
	04 May 2024 13:00	Libambai	Mozambique	0.2
	04 May 2024 13:00	Meronvi	Mozambique	0.2
	04 May 2024 17:00	Magogoni	Tanzania	0.2
	04 May 2024 18:00	Msasani	Tanzania	0.2
	04 May 2024 22:00	Kigongoni	Tanzania	0.2
	04 May 2024 22:00	Bagamoyo	Tanzania	0.2
	04 May 2024 14:00	Somanga	Tanzania	0.2
	04 May 2024 07:00	Mkarangama	Tanzania	0.2
	04 May 2024 20:00	Mbweni	Tanzania	0.2
	04 May 2024 07:00	Kilindoni	Tanzania	0.2
	04 May 2024 18:00	Konduchi	Tanzania	0.2
	05 May 2024 00:00	Banda Kuu	Tanzania	0.2
	04 May 2024 12:00	Pombwe	Tanzania	0.2
	04 May 2024 13:00	Vila de Mocimboa da Praia	Mozambique	0.2
	04 May 2024 13:00	Quissengue	Mozambique	0.2
	04 May 2024 17:00	Mjimwema	Tanzania	0.2
	04 May 2024 19:00	Doriya	Tanzania	0.2
	04 May 2024 08:00	Kipingwe	Tanzania	0.2
	04 May 2024 13:00	Olumbe	Mozambique	0.2
	04 May 2024 18:00	Kawi	Tanzania	0.2
	05 May 2024 04:00	Mkwaja	Tanzania	0.2
	01 May 2024 13:00	Kibele	Tanzania	0.2
	04 May 2024 13:00	Bawala	Mozambique	0.2
	04 May 2024 17:00	Mboamaji	Tanzania	0.2
	01 May 2024 13:00	Fumba	Tanzania	0.1
	04 May 2024 22:00	Chwaka	Tanzania	0.1
	04 May 2024 05:00	Chole	Tanzania	0.1
	04 May 2024 13:00	Maganja	Mozambique	0.1
	04 May 2024 15:00	Kutani	Tanzania	0.1
	04 May 2024 16:00	Bandarini	Tanzania	0.1
	04 May 2024 17:00	Matapatapa	Tanzania	0.1
	04 May 2024 23:00	Mkokotoni	Tanzania	0.1
	04 May 2024 19:00	Mapopwe	Tanzania	0.1
	04 May 2024 19:00	Kitogani	Tanzania	0.1
	04 May 2024 19:00	Mkunguni	Tanzania	0.1
	04 May 2024 21:00	Ukongoroni	Tanzania	0.1
	04 May 2024 21:00	Pingwe	Tanzania	0.1
	04 May 2024 23:00	Zanzibar	Tanzania	0.1
	04 May 2024 23:00	Kiembi Samaki	Tanzania	0.1
	04 May 2024 23:00	Bet-el-Mali	Tanzania	0.1
	04 May 2024 20:00	Mchamba Wima	Tanzania	0.1
	04 May 2024 23:00	Donge	Tanzania	0.1
	03 May 2024 01:00	Kijini	Tanzania	0.1
	04 May 2024 13:00	Boala	Mozambique	0.1
	04 May 2024 21:00	Dikoni	Tanzania	0.1
	04 May 2024 12:00	Quiterajo	Mozambique	0.1
	01 May 2024 18:00	Ambatoxavavy	Madagascar	0.1
	01 May 2024 18:00	Andrafia	Madagascar	0.1
	05 May 2024 03:00	Sakura	Tanzania	0.1
	05 May 2024 04:00	Ushongo Mabaoni	Tanzania	0.1
	04 May 2024 23:00	Bwereu	Tanzania	0.1
	04 May 2024 18:00	Kipandoni	Tanzania	0.1
	04 May 2024 18:00	Hiari	Tanzania	0.1
	04 May 2024 18:00	Tongoni	Tanzania	0.1
	04 May 2024 17:00	Kipara	Tanzania	0.1
	04 May 2024 17:00	Dar es Salaam	Tanzania	0.1
	04 May 2024 21:00	Mdudu Mdogo	Tanzania	0.1
	02 May 2024 00:00	Ampasimena	Madagascar	0.1
	04 May 2024 12:00	Pangane	Mozambique	0.1
	04 May 2024 23:00	Bumbwini	Tanzania	0.1
	04 May 2024 08:00	Kirongwe	Tanzania	0.1
	04 May 2024 10:00	Uzi	Tanzania	0.1
	02 May 2024 00:00	Nosy Faly	Madagascar	0.1
	02 May 2024 00:00	Ambato	Madagascar	0.1
	04 May 2024 14:00	Kilwa Kivinje	Tanzania	0.1
	01 May 2024 18:00	Anjiabe	Madagascar	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.