Overall Orange Tropical Cyclone alert for HIDAYA-24 in Tanzania, Seychelles, Comoros from 01 May 2024 00:00 UTC to 04 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

04 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	0.5 m (04 May 12:00 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	127 km/h	0.5 m	n.a.	1.5
Overall	148 km/h	0.5 m	n.a.	1.5
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

127 km/h Current Max.

Up to 610000 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
10	03 May 2024 06:00	148	8.9 million	No people	Tanzania, Seychelles, Comoros
11	03 May 2024 12:00	137	9.8 million	No people	Tanzania, Seychelles, Comoros
12	03 May 2024 18:00	127	11.5 million	No people	Tanzania, Seychelles, Comoros
13	04 May 2024 00:00	127	11.8 million	610 thousand	Tanzania, Seychelles, Comoros

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	-8.7, 43.2
10	03 May 2024 06:00	Category 1	148	no people	61000 people	Tropical Cyclone	130	-8.4, 42.6
11	03 May 2024 12:00	Category 1	137	no people	7.9 million people	Tropical Cyclone	120	-8.2, 41.9
12	03 May 2024 18:00	Category 1	127	no people	9.7 million people	Severe Tropical Storm	111	-8, 41.3
13	04 May 2024 00:00	Category 1	127	640000 people	11.1 million people	Severe Tropical Storm	111	-7.9, 40.6
13	04 May 2024 12:00	Tropical storm	84	no people	11.6 million people	Moderate Tropical Storm	74	-7.2, 39.4	Tanzania
13	05 May 2024 00:00	Tropical depression	42	no people	no people	Overland Depression	37	-6.1, 38.7	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
Tanzania	600000 people

Provinces

Region Province	Country	Population in Tropical Storm or higher strength
Pwani	Tanzania	410000 people
Dar es Salaam	Tanzania	190000 people

Critical infrastructure

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

Ports

Name	LOCODE	Country
Kisiju		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 Kisiju, Tanzania. This height is estimated for 04 May 2024 12:00 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 (62 locations). Calculation based on advisory number 13 of 04 May 2024 00:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	04 May 2024 12:00	Kisiju	Tanzania	0.5
	04 May 2024 11:00	Dondo	Tanzania	0.5
	04 May 2024 11:00	Mpafu	Tanzania	0.5
	04 May 2024 11:00	Magawa	Tanzania	0.4
	04 May 2024 12:00	Msindaji	Tanzania	0.4
	04 May 2024 07:00	Mchungu	Tanzania	0.3
	04 May 2024 07:00	Nyambati	Tanzania	0.3
	04 May 2024 07:00	Kiombani	Tanzania	0.3
	04 May 2024 02:00	Mwera	Tanzania	0.3
	04 May 2024 08:00	Kiechuru	Tanzania	0.3
	04 May 2024 08:00	Mbwera	Tanzania	0.3
	04 May 2024 05:00	Jimbo	Tanzania	0.3
	04 May 2024 11:00	Buuni Village	Tanzania	0.3
	04 May 2024 09:00	Jaja	Tanzania	0.3
	04 May 2024 05:00	Mkarangama	Tanzania	0.3
	04 May 2024 05:00	Kilindoni	Tanzania	0.3
	04 May 2024 11:00	Somanga	Tanzania	0.2
	04 May 2024 12:00	Libambai	Mozambique	0.2
	04 May 2024 12:00	Meronvi	Mozambique	0.2
	04 May 2024 05:00	Kipingwe	Tanzania	0.2
	04 May 2024 09:00	Pombwe	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 03:00	Chole	Tanzania	0.2
	04 May 2024 22:00	Mkadini	Tanzania	0.2
	04 May 2024 05:00	Kirongwe	Tanzania	0.2
	02 May 2024 10:00	Palma	Mozambique	0.2
	04 May 2024 12:00	Olumbe	Mozambique	0.2
	04 May 2024 17:00	Msasani	Tanzania	0.2
	04 May 2024 12:00	Matapatapa	Tanzania	0.2
	04 May 2024 12:00	Bawala	Mozambique	0.2
	04 May 2024 12:00	Maganja	Mozambique	0.2
	04 May 2024 18:00	Konduchi	Tanzania	0.2
	04 May 2024 16:00	Magogoni	Tanzania	0.2
	04 May 2024 19:00	Mbweni	Tanzania	0.1
	04 May 2024 15:00	Mboamaji	Tanzania	0.1
	04 May 2024 12:00	Quiterajo	Mozambique	0.1
	04 May 2024 16:00	Mjimwema	Tanzania	0.1
	04 May 2024 12:00	Boala	Mozambique	0.1
	04 May 2024 18:00	Doriya	Tanzania	0.1
	04 May 2024 17:00	Kawi	Tanzania	0.1
	04 May 2024 21:00	Sadani	Tanzania	0.1
	04 May 2024 21:00	Kigongoni	Tanzania	0.1
	04 May 2024 21:00	Bagamoyo	Tanzania	0.1
	04 May 2024 06:00	Uzi	Tanzania	0.1
	04 May 2024 10:00	Kilwa Kivinje	Tanzania	0.1
	04 May 2024 11:00	Pingwe	Tanzania	0.1
	04 May 2024 13:00	Kutani	Tanzania	0.1
	04 May 2024 14:00	Bandarini	Tanzania	0.1
	04 May 2024 05:00	Kilwa Masoko	Tanzania	0.1
	04 May 2024 23:00	Bumbwini	Tanzania	0.1
	04 May 2024 18:00	Kiembi Samaki	Tanzania	0.1
	04 May 2024 11:00	Mchamba Wima	Tanzania	0.1
	04 May 2024 11:00	Fumba	Tanzania	0.1
	04 May 2024 18:00	Kibele	Tanzania	0.1
	04 May 2024 18:00	Mapopwe	Tanzania	0.1
	04 May 2024 18:00	Kitogani	Tanzania	0.1
	04 May 2024 07:00	Kijini	Tanzania	0.1
	04 May 2024 18:00	Mkunguni	Tanzania	0.1
	04 May 2024 19:00	Chwaka	Tanzania	0.1
	04 May 2024 17:00	Ukongoroni	Tanzania	0.1
	04 May 2024 12:00	Quiwia	Mozambique	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.