Overall Orange Tropical Cyclone alert for HIDAYA-24 in Tanzania, Seychelles, Comoros on 01 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

01 May 2024 00 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	0.3 m (03 May 20:00 UTC)
Vulnerability	High (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	95 km/h	0.3 m	n.a.	0.5
Overall	148 km/h	0.3 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

95 km/h Current Max.

Up to 10.2 million people in Tropical Storm strength or higher (see SSHS)

Impact Timeline

Alert	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

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	-8.6, 45.4
1	01 May 2024 12:00	Tropical storm	74	no people	<1000 people	Moderate Tropical Storm	65	-8.9, 45
1	02 May 2024 00:00	Tropical storm	95	no people	39000 people	Moderate Tropical Storm	83	-9.1, 44.5
1	02 May 2024 12:00	Tropical storm	95	no people	310000 people	Moderate Tropical Storm	83	-9.4, 44
1	03 May 2024 00:00	Tropical storm	95	no people	310000 people	Moderate Tropical Storm	83	-9.6, 43.5
1	03 May 2024 12:00	Tropical storm	84	no people	1.5 million people	Moderate Tropical Storm	74	-9.8, 42.8
1	04 May 2024 00:00	Tropical storm	74	no people	2.2 million people	Moderate Tropical Storm	65	-9.6, 41.8
1	04 May 2024 12:00	Tropical storm	63	no people	9.7 million people	Tropical Depression	56	-9, 40.8
1	05 May 2024 00:00	Tropical depression	53	no people	no people	Overland Depression	46	-8, 39.9	Tanzania
1	05 May 2024 12:00	Tropical depression	53	no people	no people	Tropical Disturbance	46	-6.9, 39.7
1	06 May 2024 00:00	Tropical depression	42	no people	no people	Tropical Disturbance	37	-5.6, 39.9

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	290000 people
Mozambique	170000 people
Tanzania	9.5 million people

Provinces

Region Province	Country	Population in Tropical Storm or higher strength
Seychelles	Seychelles	<1000 people
Comoros	Comoros	290000 people
Cabo Delgado	Mozambique	170000 people
Mtwara	Tanzania	710000 people
Pwani	Tanzania	1.7 million people
Lindi	Tanzania	630000 people
Dar es Salaam	Tanzania	6.3 million people
Zanzibar Central/South	Tanzania	53000 people
Zanzibar Urban/West	Tanzania	2300 people
Morogoro	Tanzania	8100 people

Populated places

Name	Region Province	Country	City class	Population
Moroni		Comoros	Capital	43000 people
Mtwara	Mtwara	Tanzania	Major city	95000 people
Vila de Mocímboa da Praia	Cabo Delgado	Mozambique	City	-
Dar es Salaam	Dar-es-Salaam	Tanzania	Major city	2.7 million 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
Moroni Iconi	YVA	10	Civ.	Paved	No	4400
Palma	LMZ	unknown				0
Mtwara	MYW	113	Civ.	Paved	Yes	7400
Mocimboa Da Praia	MZB	27	Civ.	Paved	No	6500
Lindi Kikwetu	LDI	30	Civ.	Paved	No	5200
Mafia	MFA	18	Civ.	Unpaved	No	5200
Dar Es Salaam	DAR	55	Civ.	Paved	Yes	9800

Ports

Name	LOCODE	Country
Assumption Island		Seychelles
Moroni	KMYVA	Comoros
Cape Delgado		Mozambique
Mtwara	TZMYW	Tanzania
Mikindani		Tanzania
Kilondoni		Tanzania
Mocimboa		Mozambique
Lindi	TZLDI	Tanzania
Kilwa Masoko	TZKIM	Tanzania
Kilwa Kivinje	TZKIK	Tanzania
Kisiju		Tanzania
Mjimwema Terminal		Tanzania
Dar-es-Salaam	TZDAR	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

0.3 m

The maximum Storm surge height is 0.3m in Meronvi, Mozambique. This height is estimated for 03 May 2024 20:00 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 (57 locations). Calculation based on advisory number 1 of 01 May 2024 00:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	03 May 2024 20:00	Meronvi	Mozambique	0.3
	03 May 2024 20:00	Quissengue	Mozambique	0.3
	03 May 2024 20:00	Libambai	Mozambique	0.2
	03 May 2024 20:00	Vila de Mocimboa da Praia	Mozambique	0.2
	03 May 2024 20:00	Abdala	Mozambique	0.2
	03 May 2024 20:00	Maate	Mozambique	0.2
	03 May 2024 20:00	Mipande	Mozambique	0.2
	03 May 2024 20:00	Quissanga	Mozambique	0.2
	03 May 2024 20:00	Foque	Mozambique	0.2
	03 May 2024 20:00	Pangome	Mozambique	0.2
	03 May 2024 19:00	Pangane	Mozambique	0.2
	03 May 2024 20:00	Maganja	Mozambique	0.2
	03 May 2024 20:00	Tavari	Mozambique	0.2
	03 May 2024 18:00	Mwera	Tanzania	0.2
	03 May 2024 20:00	Kilindoni	Tanzania	0.2
	03 May 2024 20:00	Bawala	Mozambique	0.2
	03 May 2024 20:00	Olumbe	Mozambique	0.2
	03 May 2024 19:00	Quiwia	Mozambique	0.2
	03 May 2024 20:00	Ambatoxavavy	Madagascar	0.2
	03 May 2024 20:00	Andrafia	Madagascar	0.2
	03 May 2024 20:00	Ambato	Madagascar	0.2
	03 May 2024 20:00	Anjiabe	Madagascar	0.2
	03 May 2024 20:00	Nosy Faly	Madagascar	0.2
	03 May 2024 20:00	Marere	Mozambique	0.2
	03 May 2024 20:00	Lucete	Mozambique	0.2
	03 May 2024 19:00	Msimbati	Tanzania	0.2
	03 May 2024 19:00	Quionga	Mozambique	0.2
	03 May 2024 21:00	Ampasimena	Madagascar	0.2
	03 May 2024 20:00	Ampombilava	Madagascar	0.1
	03 May 2024 20:00	Andriana	Madagascar	0.1
	03 May 2024 20:00	Antanamazava	Madagascar	0.1
	05 May 2024 00:00	Chole	Tanzania	0.1
	03 May 2024 19:00	Boala	Mozambique	0.1
	05 May 2024 00:00	Kiombani	Tanzania	0.1
	05 May 2024 00:00	Jaja	Tanzania	0.1
	03 May 2024 19:00	Palma	Mozambique	0.1
	03 May 2024 21:00	Antanimandry	Madagascar	0.1
	03 May 2024 21:00	Ambodibonara	Madagascar	0.1
	03 May 2024 21:00	Tanambao	Madagascar	0.1
	03 May 2024 21:00	Anjabe	Madagascar	0.1
	03 May 2024 21:00	Andranomena	Madagascar	0.1
	03 May 2024 21:00	Manehoko	Madagascar	0.1
	03 May 2024 19:00	Ibo	Mozambique	0.1
	05 May 2024 00:00	Jimbo	Tanzania	0.1
	03 May 2024 20:00	Lurio	Mozambique	0.1
	05 May 2024 00:00	Mbwera	Tanzania	0.1
	05 May 2024 00:00	Kiechuru	Tanzania	0.1
	05 May 2024 00:00	Mkarangama	Tanzania	0.1
	05 May 2024 00:00	Kipingwe	Tanzania	0.1
	03 May 2024 20:00	Ambaramidada	Madagascar	0.1
	05 May 2024 00:00	Kirongwe	Tanzania	0.1
	03 May 2024 20:00	Quiterajo	Mozambique	0.1
	03 May 2024 20:00	Dembeni	Mayotte	0.1
	03 May 2024 21:00	Ambatomainty	Madagascar	0.1
	03 May 2024 22:00	Tomodo	Mozambique	0.1
	03 May 2024 22:00	Mutiba	Mozambique	0.1
	04 May 2024 10:00	Msangamkuu	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.