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 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 (04 May 20:00 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	137 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

137 km/h Current Max.

Up to no 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 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
8	02 May 2024 18:00	127	9.5 million	No people	Seychelles, Comoros, Tanzania
9	03 May 2024 00:00	137	10.3 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
8	02 May 2024 18:00	Tropical storm	116	no people	no people	Severe Tropical Storm	102	-8.9, 43.8
9	03 May 2024 00:00	Category 1	137	no people	no people	Tropical Cyclone	120	-8.8, 43.5
9	03 May 2024 12:00	Category 1	137	no people	270000 people	Tropical Cyclone	120	-8.6, 42.1
9	04 May 2024 00:00	Tropical storm	95	no people	9.5 million people	Moderate Tropical Storm	83	-8.3, 40.9
9	04 May 2024 12:00	Tropical storm	74	no people	10.1 million people	Moderate Tropical Storm	65	-7.8, 40	Tanzania
9	05 May 2024 00:00	Tropical depression	53	no people	no people	Overland Depression	46	-6.8, 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

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

0.3 m

The maximum Storm surge height is 0.3m in Dondo, Tanzania. This height is estimated for 04 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 (50 locations). Calculation based on advisory number 9 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 20:00	Dondo	Tanzania	0.3
	04 May 2024 20:00	Mpafu	Tanzania	0.3
	04 May 2024 20:00	Buuni Village	Tanzania	0.3
	04 May 2024 20:00	Kisiju	Tanzania	0.3
	04 May 2024 12:00	Jimbo	Tanzania	0.3
	04 May 2024 12:00	Meronvi	Mozambique	0.3
	04 May 2024 13:00	Mchungu	Tanzania	0.2
	04 May 2024 13:00	Nyambati	Tanzania	0.2
	04 May 2024 13:00	Kiombani	Tanzania	0.2
	04 May 2024 12:00	Libambai	Mozambique	0.2
	04 May 2024 10:00	Mwera	Tanzania	0.2
	04 May 2024 13:00	Mbwera	Tanzania	0.2
	04 May 2024 13:00	Kiechuru	Tanzania	0.2
	04 May 2024 12:00	Vila de Mocimboa da Praia	Mozambique	0.2
	04 May 2024 12:00	Quissengue	Mozambique	0.2
	04 May 2024 17:00	Msindaji	Tanzania	0.2
	04 May 2024 12:00	Mkarangama	Tanzania	0.2
	04 May 2024 12:00	Kilindoni	Tanzania	0.2
	04 May 2024 19:00	Magawa	Tanzania	0.2
	04 May 2024 12:00	Bawala	Mozambique	0.2
	04 May 2024 12:00	Olumbe	Mozambique	0.2
	04 May 2024 12:00	Kipingwe	Tanzania	0.2
	04 May 2024 15:00	Jaja	Tanzania	0.2
	04 May 2024 11:00	Chole	Tanzania	0.2
	04 May 2024 12:00	Pangane	Mozambique	0.2
	04 May 2024 12:00	Maganja	Mozambique	0.2
	04 May 2024 18:00	Somanga	Tanzania	0.2
	04 May 2024 15:00	Pombwe	Tanzania	0.2
	04 May 2024 12:00	Quiterajo	Mozambique	0.2
	04 May 2024 12:00	Kirongwe	Tanzania	0.1
	04 May 2024 23:00	Bandarini	Tanzania	0.1
	04 May 2024 22:00	Kutani	Tanzania	0.1
	04 May 2024 11:00	Tavari	Mozambique	0.1
	04 May 2024 12:00	Boala	Mozambique	0.1
	04 May 2024 12:00	Quiwia	Mozambique	0.1
	04 May 2024 23:00	Mboamaji	Tanzania	0.1
	05 May 2024 00:00	Mkunguni	Tanzania	0.1
	05 May 2024 00:00	Kipandoni	Tanzania	0.1
	04 May 2024 22:00	Magogoni	Tanzania	0.1
	05 May 2024 00:00	Kawi	Tanzania	0.1
	05 May 2024 00:00	Konduchi	Tanzania	0.1
	05 May 2024 00:00	Kipara	Tanzania	0.1
	05 May 2024 00:00	Dar es Salaam	Tanzania	0.1
	05 May 2024 00:00	Msasani	Tanzania	0.1
	01 May 2024 18:00	Fumba	Tanzania	0.1
	04 May 2024 12:00	Kilwa Masoko	Tanzania	0.1
	01 May 2024 18:00	Uzi	Tanzania	0.1
	04 May 2024 12:00	Palma	Mozambique	0.1
	05 May 2024 00:00	Mjimwema	Tanzania	0.1
	04 May 2024 19:00	Matapatapa	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.