Overall Orange Tropical Cyclone alert for HIDAYA-24 in Tanzania, Seychelles, Comoros from 01 May 2024 00:00 UTC to 06:00

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 06 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 (02 May 02:00 UTC)
Vulnerability	High (Comoros)
Landfall	between 04 May 2024 18:00 - 05 May 2024 06:00 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	106 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

106 km/h Current Max.

Up to 8.9 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
	2	01 May 2024 06:00	106	8.9 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	-8.4, 45.5
2	01 May 2024 06:00	Tropical storm	63	no people	<1000 people	Tropical Depression	56	-9.2, 45.5
2	01 May 2024 18:00	Tropical storm	84	no people	<1000 people	Moderate Tropical Storm	74	-9.5, 45
2	02 May 2024 06:00	Tropical storm	95	no people	<1000 people	Moderate Tropical Storm	83	-9.6, 44.3
2	02 May 2024 18:00	Tropical storm	106	no people	270000 people	Severe Tropical Storm	93	-9.6, 43.8
2	03 May 2024 06:00	Tropical storm	95	no people	850000 people	Moderate Tropical Storm	83	-9.7, 43.2
2	03 May 2024 18:00	Tropical storm	84	no people	900000 people	Moderate Tropical Storm	74	-9.8, 42.3
2	04 May 2024 06:00	Tropical storm	74	no people	810000 people	Moderate Tropical Storm	65	-9.3, 41.2
2	04 May 2024 18:00	Tropical storm	63	no people	8 million people	Tropical Depression	56	-8.6, 40.1
2	05 May 2024 06:00	Tropical depression	53	no people	no people	Overland Depression	46	-7.8, 39.4	Tanzania
2	05 May 2024 18:00	Tropical depression	42	no people	no people	Overland Depression	37	-6.3, 39.2	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	370000 people
Mozambique	100000 people
Tanzania	8.2 million people

Provinces

Region Province	Country	Population in Tropical Storm or higher strength
Seychelles	Seychelles	<1000 people
Comoros	Comoros	370000 people
Cabo Delgado	Mozambique	100000 people
Mtwara	Tanzania	280000 people
Lindi	Tanzania	330000 people
Pwani	Tanzania	1.4 million people
Dar es Salaam	Tanzania	6.1 million people
Morogoro	Tanzania	3100 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
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 Ambatoxavavy, Madagascar. This height is estimated for 02 May 2024 02:00 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 (64 locations). Calculation based on advisory number 2 of 01 May 2024 06:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	02 May 2024 02:00	Ambatoxavavy	Madagascar	0.3
	02 May 2024 02:00	Andrafia	Madagascar	0.3
	02 May 2024 01:00	Meronvi	Mozambique	0.3
	02 May 2024 01:00	Quissengue	Mozambique	0.3
	05 May 2024 06:00	Msindaji	Tanzania	0.3
	05 May 2024 04:00	Mchungu	Tanzania	0.3
	05 May 2024 04:00	Nyambati	Tanzania	0.3
	05 May 2024 04:00	Kiombani	Tanzania	0.3
	05 May 2024 04:00	Kiechuru	Tanzania	0.3
	05 May 2024 03:00	Mbwera	Tanzania	0.2
	02 May 2024 02:00	Nosy Faly	Madagascar	0.2
	02 May 2024 02:00	Ambato	Madagascar	0.2
	05 May 2024 02:00	Mwera	Tanzania	0.2
	02 May 2024 02:00	Anjiabe	Madagascar	0.2
	02 May 2024 01:00	Pangane	Mozambique	0.2
	04 May 2024 10:00	Libambai	Mozambique	0.2
	05 May 2024 04:00	Jaja	Tanzania	0.2
	05 May 2024 03:00	Kilindoni	Tanzania	0.2
	04 May 2024 10:00	Vila de Mocimboa da Praia	Mozambique	0.2
	02 May 2024 01:00	Abdala	Mozambique	0.2
	02 May 2024 01:00	Maate	Mozambique	0.2
	02 May 2024 01:00	Pangome	Mozambique	0.2
	05 May 2024 04:00	Mkarangama	Tanzania	0.2
	04 May 2024 10:00	Bawala	Mozambique	0.2
	04 May 2024 10:00	Olumbe	Mozambique	0.2
	05 May 2024 03:00	Kipingwe	Tanzania	0.2
	04 May 2024 07:00	Maganja	Mozambique	0.2
	02 May 2024 01:00	Ampombilava	Madagascar	0.2
	02 May 2024 01:00	Andriana	Madagascar	0.2
	02 May 2024 01:00	Antanamazava	Madagascar	0.2
	05 May 2024 03:00	Kirongwe	Tanzania	0.2
	02 May 2024 02:00	Tavari	Mozambique	0.2
	05 May 2024 06:00	Somanga	Tanzania	0.2
	02 May 2024 01:00	Ambaramidada	Madagascar	0.2
	05 May 2024 05:00	Pombwe	Tanzania	0.2
	05 May 2024 01:00	Chole	Tanzania	0.1
	02 May 2024 02:00	Marere	Mozambique	0.1
	02 May 2024 02:00	Lucete	Mozambique	0.1
	05 May 2024 02:00	Jimbo	Tanzania	0.1
	02 May 2024 01:00	Quiwia	Mozambique	0.1
	04 May 2024 18:00	Quiterajo	Mozambique	0.1
	02 May 2024 01:00	Msimbati	Tanzania	0.1
	05 May 2024 06:00	Kisiju	Tanzania	0.1
	04 May 2024 07:00	Palma	Mozambique	0.1
	04 May 2024 07:00	Boala	Mozambique	0.1
	02 May 2024 03:00	Ambatomainty	Madagascar	0.1
	02 May 2024 03:00	Manehoko	Madagascar	0.1
	02 May 2024 03:00	Antanimandry	Madagascar	0.1
	02 May 2024 03:00	Ambodibonara	Madagascar	0.1
	02 May 2024 03:00	Tanambao	Madagascar	0.1
	02 May 2024 03:00	Anjabe	Madagascar	0.1
	02 May 2024 03:00	Andranomena	Madagascar	0.1
	05 May 2024 06:00	Matapatapa	Tanzania	0.1
	04 May 2024 07:00	Quionga	Mozambique	0.1
	02 May 2024 00:00	Bandele	Mayotte	0.1
	02 May 2024 00:00	Dapani	Mayotte	0.1
	04 May 2024 18:00	Kilwa Kivinje	Tanzania	0.1
	04 May 2024 21:00	Kilwa Masoko	Tanzania	0.1
	02 May 2024 00:00	Dembeni	Mayotte	0.1
	02 May 2024 00:00	Mamoudzou	Mayotte	0.1
	02 May 2024 00:00	Longoni	Mayotte	0.1
	02 May 2024 01:00	Ibo	Mozambique	0.1
	02 May 2024 00:00	Dzaoudzi	Mayotte	0.1
	02 May 2024 02:00	Ampohana	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.