Overall Red Tropical Cyclone for IDA-21 in United States, Cuba from 26 Aug 2021 15:00 UTC to 30 Aug 2021 21:00 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve awareness, information exchange and coordination in the first phase after major sudden-onset disasters.

Overall Red Tropical Cyclone for IDA-21

in United States, Cuba

30 Aug 2021 21 UTC

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Meteorological source:

GDACS NOAA

Impact Single TC

Impact based on all weather systems in the area

Impact

Tropical Cyclone IDA-21 can have a high humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source	GDACS
Glide number:	TC-2021-000131-CUB
Exposed countries	United States, Cuba
Exposed population	2.7 million in Category 1 or higher
Maximum wind speed	241 km/h
Maximum storm surge	1.8 m (29 Aug 18:00 UTC)
Vulnerability	Low (Cuba)
Landfall	between 29 Aug 2021 15:00 - 29 Aug 2021 21:00 in United States

GDACS Score

GDACS score for Tropical Cyclones is 0.5 (GREEN Level), 1.5 (ORANGE Level), 2.5 (RED Level)
For more info on GDACS core click here.

	Wind	Storm surge	Rainfall	GDACS score
Current	56 km/h	0.2 m	n.a.	0.5
Overall	241 km/h	1.8 m	n.a.	2.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track) based on GDACS impact

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Wind

56 km/h Current Max.

Up to 12.4 million people in Tropical Storm 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	26 Aug 2021 15:00	176	7.4 million	770 thousand	United States
2	26 Aug 2021 21:00	176	9.7 million	1.3 million	United States
3	27 Aug 2021 03:00	176	6.1 million	1.1 million	United States
4	27 Aug 2021 09:00	185	7.9 million	1.5 million	United States
5	27 Aug 2021 15:00	194	6.7 million	1.1 million	Cuba, United States
6	27 Aug 2021 21:00	222	11 million	1.4 million	Cuba, United States
7	28 Aug 2021 03:00	222	16.7 million	1.6 million	Cuba, United States
8	28 Aug 2021 09:00	222	9.4 million	1.7 million	Cuba, United States
9	28 Aug 2021 15:00	213	8.4 million	1.5 million	Cuba, United States
10	28 Aug 2021 21:00	213	9.2 million	1.8 million	United States, Cuba
11	29 Aug 2021 03:00	213	9.8 million	2.1 million	United States, Cuba
12	29 Aug 2021 09:00	231	11.3 million	2.3 million	United States, Cuba
13	29 Aug 2021 12:00	250	11.3 million	2.7 million	United States, Cuba
14	29 Aug 2021 15:00	241	9.3 million	2.9 million	United States, Cuba
15	29 Aug 2021 21:00	213	9.4 million	2.8 million	United States, Cuba
16	30 Aug 2021 03:00	167	9.2 million	2.7 million	United States, Cuba
17	30 Aug 2021 09:00	93	9.4 million	2.7 million	United States, Cuba
18	30 Aug 2021 15:00	65	13.9 million	2.7 million	United States, Cuba
19	30 Aug 2021 21:00	56	12.4 million	2.7 million	United States, Cuba

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	26 Aug 2021 15:00	Tropical depression	56	no people	no people	16.9, -79.2
2	26 Aug 2021 21:00	Tropical depression	56	no people	55000 people	18, -79.8
3	27 Aug 2021 03:00	Tropical storm	65	no people	55000 people	18.6, -80.5
4	27 Aug 2021 09:00	Tropical storm	74	no people	790000 people	20, -81.4
5	27 Aug 2021 15:00	Tropical storm	102	250000 people	1.9 million people	20.7, -82.1
6	27 Aug 2021 21:00	Category 1	130	470000 people	3.4 million people	22.1, -83.2
7	28 Aug 2021 03:00	Category 1	130	3300 people	3.3 million people	23, -84
8	28 Aug 2021 09:00	Category 1	130	no people	<1000 people	24, -85.2
9	28 Aug 2021 15:00	Category 1	139	no people	no people	24.8, -86.1
10	28 Aug 2021 21:00	Category 2	167	no people	4900 people	26.2, -87
11	29 Aug 2021 03:00	Category 2	167	no people	1.9 million people	27.2, -88
12	29 Aug 2021 09:00	Category 4	222	62000 people	3.7 million people	28, -89.1
13	29 Aug 2021 12:00	Category 4	241	370000 people	3.7 million people	28.5, -89.6
14	29 Aug 2021 15:00	Category 4	241	2.2 million people	4.3 million people	28.8, -90
15	29 Aug 2021 21:00	Category 4	213	2.1 million people	4.5 million people	29.5, -90.6	United States
16	30 Aug 2021 03:00	Category 2	167	1.2 million people	5.3 million people	30.3, -90.7	United States
17	30 Aug 2021 09:00	Tropical storm	93	no people	5.8 million people	31, -90.8	United States
18	30 Aug 2021 15:00	Tropical storm	65	no people	10.3 million people	31.9, -90.7	United States
19	30 Aug 2021 21:00	Tropical depression	56	no people	no people	32.6, -90.3	United States
19	31 Aug 2021 06:00	Tropical depression	46	no people	no people	33.6, -89.3	United States
19	31 Aug 2021 18:00	Tropical depression	46	no people	no people	34.8, -87.2	United States
19	01 Sep 2021 06:00	Tropical depression	37	no people	no people	36.3, -84.3	United States
19	01 Sep 2021 18:00	Tropical depression	37	no people	no people	38, -80.7	United States
19	02 Sep 2021 06:00	Tropical depression	46	no people	no people	39, -77	United States
19	02 Sep 2021 18:00	Tropical depression	56	no people	no people	39.5, -74.2	United States
19	03 Sep 2021 18:00	Tropical depression	56	no people	no people	41, -67.9

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

Source: GADM and GHSL

Provinces

Source: GADM and GHSL

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

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.

Disclaimer - Copyright
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.