Overall Orange Tropical Cyclone alert for HIDAYA-24 in Tanzania, Seychelles, Comoros from 01 May 2024 00:00 UTC to 03 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

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

Meteorological source	GDACS
Exposed countries	Seychelles, Tanzania
Exposed population	10 thousand in Category 1 or higher
Maximum wind speed	167 km/h
Maximum storm surge	0.7 m (04 May 16:00 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	167 km/h	0.7 m	n.a.	0.5
Overall	167 km/h	0.7 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

167 km/h Current Max.

Up to 11000 people in Category 1 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

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
4	03 May 2024 12:00	Category 2	167	no people	29000 people	-8.5, 42.1
4	04 May 2024 00:00	Category 2	167	11000 people	7.6 million people	-8, 40.9
4	04 May 2024 12:00	Tropical storm	111	no people	8.4 million people	-7.5, 39.7
4	05 May 2024 00:00	Tropical storm	74	no people	9.6 million people	-6.9, 38.8	Tanzania
4	06 May 2024 00:00	Tropical depression	56	no people	no people	-5.4, 36.9	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	Population in Tropical Storm or higher strength
Tanzania	8700 people

Provinces

Region Province	Country	Population in Tropical Storm or higher strength
Pwani	Tanzania	8700 people

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

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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

0.7 m

The maximum Storm surge height is 0.7m in Kisiju, 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 (46 locations). Calculation based on advisory number 4 of 03 May 2024 00:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	04 May 2024 16:00	Kisiju	Tanzania	0.7
	04 May 2024 16:00	Magawa	Tanzania	0.5
	04 May 2024 16:00	Msindaji	Tanzania	0.5
	04 May 2024 16:00	Dondo	Tanzania	0.5
	04 May 2024 16:00	Mpafu	Tanzania	0.5
	04 May 2024 15:00	Kutani	Tanzania	0.3
	04 May 2024 17:00	Mchungu	Tanzania	0.3
	04 May 2024 17:00	Nyambati	Tanzania	0.3
	04 May 2024 17:00	Kiombani	Tanzania	0.3
	04 May 2024 09:00	Jimbo	Tanzania	0.2
	02 May 2024 00:00	Palma	Mozambique	0.2
	02 May 2024 00:00	Bawala	Mozambique	0.2
	02 May 2024 00:00	Olumbe	Mozambique	0.2
	02 May 2024 00:00	Boala	Mozambique	0.2
	04 May 2024 09:00	Mkarangama	Tanzania	0.2
	04 May 2024 12:00	Kiechuru	Tanzania	0.2
	04 May 2024 09:00	Kipingwe	Tanzania	0.2
	04 May 2024 07:00	Mwera	Tanzania	0.2
	04 May 2024 11:00	Mbwera	Tanzania	0.2
	04 May 2024 13:00	Jaja	Tanzania	0.2
	02 May 2024 00:00	Meronvi	Mozambique	0.2
	04 May 2024 10:00	Chole	Tanzania	0.2
	01 May 2024 13:00	Kibele	Tanzania	0.2
	01 May 2024 13:00	Fumba	Tanzania	0.1
	04 May 2024 22:00	Msasani	Tanzania	0.1
	04 May 2024 15:00	Somanga	Tanzania	0.1
	04 May 2024 12:00	Pombwe	Tanzania	0.1
	04 May 2024 09:00	Kirongwe	Tanzania	0.1
	02 May 2024 14:00	Quissengue	Mozambique	0.1
	04 May 2024 17:00	Buuni Village	Tanzania	0.1
	01 May 2024 18:00	Ambatoxavavy	Madagascar	0.1
	01 May 2024 18:00	Andrafia	Madagascar	0.1
	04 May 2024 17:00	Kilindoni	Tanzania	0.1
	01 May 2024 13:00	Mchamba Wima	Tanzania	0.1
	02 May 2024 00:00	Ampasimena	Madagascar	0.1
	04 May 2024 21:00	Magogoni	Tanzania	0.1
	02 May 2024 01:00	Vila de Mocimboa da Praia	Mozambique	0.1
	02 May 2024 00:00	Libambai	Mozambique	0.1
	02 May 2024 00:00	Maganja	Mozambique	0.1
	02 May 2024 00:00	Nosy Faly	Madagascar	0.1
	02 May 2024 00:00	Ambato	Madagascar	0.1
	01 May 2024 18:00	Anjiabe	Madagascar	0.1
	02 May 2024 02:00	Pangane	Mozambique	0.1
	02 May 2024 01:00	Uzi	Tanzania	0.1
	04 May 2024 20:00	Mboamaji	Tanzania	0.1
	04 May 2024 20:00	Mjimwema	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.