Overall Orange Tropical Cyclone alert for HIDAYA-24 in Tanzania, Seychelles, Comoros from 01 May 2024 00:00 UTC to 02 May 2024 18:00 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

02 May 2024 18 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 22:00 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	127 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

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

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, 44.3
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	-9, 43.6
8	03 May 2024 06:00	Category 1	127	no people	34000 people	Severe Tropical Storm	111	-8.9, 42.8
8	03 May 2024 18:00	Tropical storm	106	no people	61000 people	Severe Tropical Storm	93	-8.6, 41.8
8	04 May 2024 06:00	Tropical storm	84	no people	7.4 million people	Moderate Tropical Storm	74	-8.2, 40.7
8	04 May 2024 18:00	Tropical storm	63	no people	9.4 million people	Tropical Depression	56	-7.5, 39.7
8	05 May 2024 06:00	Tropical depression	42	no people	no people	Overland Depression	37	-6.5, 39.4	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 22:00 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 (38 locations). Calculation based on advisory number 8 of 02 May 2024 18:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	04 May 2024 22:00	Dondo	Tanzania	0.3
	04 May 2024 22:00	Mpafu	Tanzania	0.3
	04 May 2024 22:00	Buuni Village	Tanzania	0.3
	04 May 2024 20:00	Kisiju	Tanzania	0.3
	04 May 2024 17:00	Mchungu	Tanzania	0.2
	04 May 2024 17:00	Nyambati	Tanzania	0.2
	04 May 2024 17:00	Kiombani	Tanzania	0.2
	04 May 2024 17:00	Kilindoni	Tanzania	0.2
	04 May 2024 07:00	Meronvi	Mozambique	0.2
	04 May 2024 19:00	Msindaji	Tanzania	0.2
	04 May 2024 21:00	Magawa	Tanzania	0.2
	04 May 2024 07:00	Libambai	Mozambique	0.2
	04 May 2024 06:00	Quissengue	Mozambique	0.2
	04 May 2024 14:00	Jimbo	Tanzania	0.2
	04 May 2024 17:00	Mbwera	Tanzania	0.2
	04 May 2024 18:00	Kiechuru	Tanzania	0.2
	04 May 2024 12:00	Mwera	Tanzania	0.2
	04 May 2024 07:00	Vila de Mocimboa da Praia	Mozambique	0.2
	02 May 2024 10:00	Palma	Mozambique	0.2
	04 May 2024 18:00	Jaja	Tanzania	0.2
	04 May 2024 07:00	Olumbe	Mozambique	0.2
	04 May 2024 18:00	Pombwe	Tanzania	0.2
	04 May 2024 07:00	Bawala	Mozambique	0.2
	04 May 2024 06:00	Maganja	Mozambique	0.1
	04 May 2024 15:00	Kipingwe	Tanzania	0.1
	04 May 2024 19:00	Somanga	Tanzania	0.1
	04 May 2024 12:00	Chole	Tanzania	0.1
	04 May 2024 07:00	Boala	Mozambique	0.1
	04 May 2024 22:00	Mboamaji	Tanzania	0.1
	04 May 2024 10:00	Quiterajo	Mozambique	0.1
	04 May 2024 07:00	Tavari	Mozambique	0.1
	04 May 2024 14:00	Mkarangama	Tanzania	0.1
	01 May 2024 18:00	Fumba	Tanzania	0.1
	01 May 2024 18:00	Uzi	Tanzania	0.1
	04 May 2024 14:00	Kirongwe	Tanzania	0.1
	05 May 2024 00:00	Kutani	Tanzania	0.1
	05 May 2024 01:00	Bandarini	Tanzania	0.1
	04 May 2024 06:00	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.