Overall Orange Tropical Cyclone alert for HIDAYA-24 in Tanzania, Seychelles, Comoros from 01 May 2024 00:00 UTC to 02 May 2024 12:00 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

02 May 2024 12 UTC

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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 medium humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source	WMO/RSMC La Réunion - Meteo France
Exposed countries	Tanzania, Seychelles, Comoros
Exposed population	640 thousand in Category 1 or higher
Maximum wind speed	148 km/h
Maximum storm surge	0.5 m (04 May 16:00 UTC)
Vulnerability	High (Comoros)
Landfall	between 04 May 2024 00:00 - 04 May 2024 12:00 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	116 km/h	0.5 m	n.a.	0.5
Overall	148 km/h	0.5 m	n.a.	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track) based on WMO/RSMC La Réunion - Meteo France impact

Joint Pilot Activity: EC-JRC,WMO/RSMC La Réunion-Meteo France

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Wind

116 km/h Current Max.

Up to 10 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 00:00	95	10.2 million	No people	Seychelles, Comoros, Mozambique, Tanzania
2	01 May 2024 06:00	106	8.9 million	No people	Seychelles, Comoros, Mozambique, Tanzania
3	01 May 2024 12:00	106	10.5 million	No people	Seychelles, Mozambique, Tanzania
4	01 May 2024 18:00	84	14.5 million	No people	Seychelles, Mozambique, Tanzania, Kenya
5	02 May 2024 00:00	106	10.6 million	No people	Seychelles, Comoros, Mozambique, Tanzania
6	02 May 2024 06:00	116	10.3 million	No people	Seychelles, Comoros, Tanzania
7	02 May 2024 12:00	116	10 million	No people	Seychelles, Comoros, Tanzania

Bulletin Timeline

N°	Date (UTC)	Category (SSHS)	Max winds (km/h)	Population in Cat.1 or higher	Population in Tropical Storm or higher	Category (WMO/RSMC) **	Max winds (km/h) (WMO/RSMC)	Location (lat, lon)	Countries
1	01 May 2024 00:00	Tropical storm	63	no people	<1000 people	Tropical Depression	56	-8.4, 45.6
2	01 May 2024 06:00	Tropical storm	63	no people	<1000 people	Tropical Depression	56	-8.8, 45.6
3	01 May 2024 12:00	Tropical storm	63	no people	<1000 people	Tropical Depression	56	-8.8, 45.3
4	01 May 2024 18:00	Tropical storm	74	no people	<1000 people	Moderate Tropical Storm	65	-8.8, 45
5	02 May 2024 00:00	Tropical storm	74	no people	120000 people	Moderate Tropical Storm	65	-9, 44.5
6	02 May 2024 06:00	Tropical storm	84	no people	no people	Moderate Tropical Storm	74	-8.9, 44.2
7	02 May 2024 12:00	Tropical storm	95	no people	no people	Moderate Tropical Storm	83	-8.8, 44.1
7	03 May 2024 00:00	Tropical storm	116	no people	no people	Severe Tropical Storm	102	-9, 42.8
7	03 May 2024 12:00	Tropical storm	106	no people	570000 people	Severe Tropical Storm	93	-8.7, 41.7
7	04 May 2024 00:00	Tropical storm	84	no people	8.5 million people	Moderate Tropical Storm	74	-8.3, 40.4
7	04 May 2024 12:00	Tropical storm	63	no people	9.7 million people	Overland Depression	56	-7.4, 39.5	Tanzania
7	05 May 2024 00:00	Tropical depression	53	no people	no people	Overland Depression	46	-6.7, 39.5	Tanzania

Tropical disturbance/Weak low pressure area/Remnant low (Vmax < 51 km/h), see WMO

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	Population in Tropical Storm or higher strength
Seychelles	<1000 people
Comoros	110000 people
Tanzania	9.6 million people

Provinces

Region Province	Country	Population in Tropical Storm or higher strength
Seychelles	Seychelles	<1000 people
Comoros	Comoros	110000 people
Pwani	Tanzania	1.8 million people
Lindi	Tanzania	170000 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	4700 people
Tanga	Tanzania	<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)
Assumption Island		3	Civ.	Paved	No	3900
Moroni Hahaia	HAH	27	Civ.	Paved	Yes	9500
Mafia	MFA	18	Civ.	Unpaved	No	5200
Dar Es Salaam	DAR	55	Civ.	Paved	Yes	9800
Zanzibar	ZNZ	16	Civ.	Paved	Yes	8000

Ports

Name	LOCODE	Country
Assumption Island		Seychelles
Kilondoni		Tanzania
Kilwa Masoko	TZKIM	Tanzania
Kilwa Kivinje	TZKIK	Tanzania
Kisiju		Tanzania
Mjimwema Terminal		Tanzania
Dar-es-Salaam	TZDAR	Tanzania
Zanzibar	TZZNZ	Tanzania

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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

0.5 m

The maximum Storm surge height is 0.5m in Buuni Village, Tanzania. This height is estimated for 04 May 2024 16:00 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 (84 locations). Calculation based on advisory number 7 of 02 May 2024 12:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	04 May 2024 16:00	Buuni Village	Tanzania	0.5
	04 May 2024 13:00	Kisiju	Tanzania	0.5
	04 May 2024 16:00	Dondo	Tanzania	0.4
	04 May 2024 16:00	Mpafu	Tanzania	0.4
	04 May 2024 13:00	Magawa	Tanzania	0.3
	04 May 2024 13:00	Msindaji	Tanzania	0.3
	04 May 2024 12:00	Mchungu	Tanzania	0.3
	04 May 2024 12:00	Nyambati	Tanzania	0.3
	04 May 2024 12:00	Kiombani	Tanzania	0.3
	04 May 2024 07:00	Jimbo	Tanzania	0.3
	03 May 2024 22:00	Mwera	Tanzania	0.3
	04 May 2024 12:00	Kiechuru	Tanzania	0.3
	04 May 2024 10:00	Mbwera	Tanzania	0.3
	04 May 2024 12:00	Jaja	Tanzania	0.3
	04 May 2024 07:00	Mkarangama	Tanzania	0.3
	04 May 2024 12:00	Somanga	Tanzania	0.2
	03 May 2024 22:00	Meronvi	Mozambique	0.2
	04 May 2024 07:00	Kipingwe	Tanzania	0.2
	04 May 2024 07:00	Kirongwe	Tanzania	0.2
	04 May 2024 05:00	Chole	Tanzania	0.2
	03 May 2024 22:00	Quissengue	Mozambique	0.2
	04 May 2024 12:00	Pombwe	Tanzania	0.2
	03 May 2024 23:00	Vila de Mocimboa da Praia	Mozambique	0.2
	03 May 2024 23:00	Libambai	Mozambique	0.2
	03 May 2024 22:00	Bawala	Mozambique	0.2
	03 May 2024 23:00	Olumbe	Mozambique	0.2
	04 May 2024 13:00	Matapatapa	Tanzania	0.2
	03 May 2024 23:00	Maganja	Mozambique	0.2
	04 May 2024 20:00	Kutani	Tanzania	0.2
	04 May 2024 20:00	Bandarini	Tanzania	0.2
	03 May 2024 22:00	Msangamkuu	Tanzania	0.2
	03 May 2024 23:00	Taandani	Tanzania	0.2
	05 May 2024 00:00	Uzi	Tanzania	0.1
	04 May 2024 21:00	Mboamaji	Tanzania	0.1
	05 May 2024 00:00	Kijini	Tanzania	0.1
	03 May 2024 23:00	Uchangani	Tanzania	0.1
	03 May 2024 23:00	Ziwani	Tanzania	0.1
	03 May 2024 23:00	Kijichame	Tanzania	0.1
	04 May 2024 06:00	Kilwa Masoko	Tanzania	0.1
	03 May 2024 23:00	Quiwia	Mozambique	0.1
	05 May 2024 00:00	Mkunguni	Tanzania	0.1
	05 May 2024 00:00	Hiari	Tanzania	0.1
	05 May 2024 00:00	Tongoni	Tanzania	0.1
	04 May 2024 22:00	Kawi	Tanzania	0.1
	04 May 2024 22:00	Konduchi	Tanzania	0.1
	04 May 2024 22:00	Kipara	Tanzania	0.1
	04 May 2024 22:00	Dar es Salaam	Tanzania	0.1
	04 May 2024 13:00	Pingwe	Tanzania	0.1
	04 May 2024 16:00	Mchamba Wima	Tanzania	0.1
	04 May 2024 16:00	Fumba	Tanzania	0.1
	04 May 2024 13:00	Kilindoni	Tanzania	0.1
	03 May 2024 23:00	Palma	Mozambique	0.1
	03 May 2024 23:00	Boala	Mozambique	0.1
	04 May 2024 12:00	Kilwa Kivinje	Tanzania	0.1
	04 May 2024 00:00	Mtanga	Tanzania	0.1
	04 May 2024 20:00	Mjimwema	Tanzania	0.1
	03 May 2024 22:00	Msimbati	Tanzania	0.1
	03 May 2024 23:00	Quionga	Mozambique	0.1
	03 May 2024 23:00	Quiterajo	Mozambique	0.1
	03 May 2024 23:00	Pangane	Mozambique	0.1
	05 May 2024 00:00	Kiembi Samaki	Tanzania	0.1
	05 May 2024 00:00	Kibele	Tanzania	0.1
	05 May 2024 00:00	Mapopwe	Tanzania	0.1
	03 May 2024 23:00	Kuwea	Tanzania	0.1
	03 May 2024 23:00	Lihimalyao	Tanzania	0.1
	05 May 2024 00:00	Paje	Tanzania	0.1
	05 May 2024 00:00	Kipandoni	Tanzania	0.1
	05 May 2024 00:00	Kitogani	Tanzania	0.1
	04 May 2024 13:00	Ukongoroni	Tanzania	0.1
	05 May 2024 00:00	Zanzibar	Tanzania	0.1
	05 May 2024 00:00	Mbweni	Tanzania	0.1
	03 May 2024 23:00	Kilwa Kisiwani	Tanzania	0.1
	04 May 2024 00:00	Songa Manara I	Tanzania	0.1
	03 May 2024 23:00	Magesani	Tanzania	0.1
	03 May 2024 23:00	Rushungi	Tanzania	0.1
	04 May 2024 00:00	Mkoe	Tanzania	0.1
	04 May 2024 13:00	Msasani	Tanzania	0.1
	04 May 2024 20:00	Magogoni	Tanzania	0.1
	04 May 2024 13:00	Chwaka	Tanzania	0.1
	05 May 2024 00:00	Doriya	Tanzania	0.1
	04 May 2024 13:00	Bwereu	Tanzania	0.1
	04 May 2024 13:00	Banda Kuu	Tanzania	0.1
	04 May 2024 13:00	Mkokotoni	Tanzania	0.1
	03 May 2024 22:00	Mwambo	Tanzania	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.