Overall Green Tropical Cyclone alert for JOBO-21 in Tanzania, Seychelles from 21 Apr 2021 00:00 UTC to 24 Apr 2021 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 Green alert Tropical Cyclone for JOBO-21

in Tanzania, Seychelles

21 Apr 2021 18 UTC

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to select bulletin time

Meteorological source:

GDACS JTWC

Impact Single TC

Impact based on all weather systems in the area

Impact

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

Meteorological source	GFS
Exposed countries	Seychelles
Exposed population	No people in Category 1 or higher
Maximum wind speed	101 km/h
Maximum storm surge	0.1 m (22 Apr 12:45 UTC)
Vulnerability	Medium (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
GFS Current	101 km/h	0.1 m	136 mm	0.5
GFS Overall	130 km/h	0.2 m	527 mm	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

130 km/h

Up to Few people can be affected by wind speeds of Tropical Storm strength or above

Wind exposed population - AoIs

Estimations based on the bulletin of 21 Apr 2021 18:00 UTC

Category	Country	Population
Tropical Storm	Seychelles	495

See TC classification SSHS

Wind Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

N°	Date (UTC)	Max Winds (km/h)	Pop in Cat. 1 or higher	Cat. 1	Cat. 2	Cat. 3	Cat. 4	Cat. 5	Countries
1	21 Apr 2021 00:00	86	-	-	-	-	-	-	Seychelles
2	21 Apr 2021 06:00	94	-	-	-	-	-	-	Seychelles
3	21 Apr 2021 12:00	130	-	-	-	-	-	-	Seychelles
4	21 Apr 2021 18:00	101	-	-	-	-	-	-	Seychelles

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 21 Apr 2021 18:00 UTC

Level	Country	Population
100-250 mm	Seychelles	227
50-100 mm	Seychelles, Mozambique	275	+
	Seychelles	268
	Mozambique	07

Rain Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

N°	Date (UTC)	Max Rainfall (mm)	Pop >100mm or higher	50-100	100-250	250-500	500-750	750-1000	>1000	Countries
1	21 Apr 2021 00:00	72	-	-	-	-	-	-	-
2	21 Apr 2021 06:00	64	-		-	-	-	-	-	Seychelles
3	21 Apr 2021 12:00	129	-		-	-	-	-	-	Seychelles
4	21 Apr 2021 18:00	451	Few people			-	-	-	-	Seychelles, Mozambique

Impact estimation for the next 72h

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StormSurge

0.1 m

The maximum Storm surge height is 0.1m in Magawa, Tanzania. This height is estimated for 22 Apr 2021 12:45 UTC .

The JRC has developed an experimental global storm surge model, which is run after each advisory issued by the regional tropical cyclone centres. 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.

Storm Surge Exposed population - AoIs

Storm Surge Exposed locations

Calculation based on the bulletin of 21 Apr 2021 18:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	22 Apr 2021 12:45	Magawa	Tanzania	0.1
	22 Apr 2021 12:45	Msindaji	Tanzania	0.1
	22 Apr 2021 12:45	Mchungu	Tanzania	0.1
	22 Apr 2021 07:45	Ambalihabe	Madagascar	0.1
	22 Apr 2021 07:45	Ambodizaotra	Madagascar	0.1
	22 Apr 2021 07:45	Antotoro	Madagascar	0.1
	22 Apr 2021 07:45	Ampohana	Madagascar	0.1
	22 Apr 2021 12:45	Dondo	Tanzania	0.1
	22 Apr 2021 12:45	Kisiju	Tanzania	0.1
	22 Apr 2021 12:45	Antananabe	Madagascar	0.1
	22 Apr 2021 12:45	Anjiamalandy	Madagascar	0.1
	22 Apr 2021 12:45	Mandrony	Madagascar	0.1
	22 Apr 2021 12:45	Anorotsangana	Madagascar	0.1
	22 Apr 2021 12:45	Antsahabe	Madagascar	0.1
	22 Apr 2021 12:45	Maromokotra	Madagascar	0.1
	22 Apr 2021 12:45	Marokitrana	Madagascar	0.1
	22 Apr 2021 12:45	Ampiambesa	Madagascar	0.1
	22 Apr 2021 12:45	Antetezampolaka	Madagascar	0.1
	21 Apr 2021 19:45	Marovoha	Madagascar	0.1
	21 Apr 2021 19:45	Ampitily	Madagascar	0.1
	21 Apr 2021 19:45	Ambalatsingy	Madagascar	0.1
	21 Apr 2021 19:45	Singalana	Madagascar	0.1
	21 Apr 2021 19:45	Antaribao	Madagascar	0.1
	21 Apr 2021 19:45	Ambodibonara	Madagascar	0.1
	21 Apr 2021 19:45	Tsaratanana	Madagascar	0.1
	21 Apr 2021 19:45	Ampasindava	Madagascar	0.1
	21 Apr 2021 19:45	Ankinganifahatelo	Madagascar	0.1
	22 Apr 2021 13:00	Kiombani	Tanzania	0.1
	22 Apr 2021 12:45	Nyambati	Tanzania	0.1
	22 Apr 2021 12:45	Salale	Tanzania	0.1
	22 Apr 2021 14:30	Donge	Tanzania	0.1
	22 Apr 2021 14:30	Mkokotoni	Tanzania	0.1
	22 Apr 2021 14:30	Bwereu	Tanzania	0.1
	22 Apr 2021 14:30	Banda Kuu	Tanzania	0.1
	22 Apr 2021 14:30	Mkuuni	Tanzania	0.1
	22 Apr 2021 14:30	Gazija	Tanzania	0.1
	22 Apr 2021 14:30	Gulioni	Tanzania	0.1
	22 Apr 2021 09:00	Ampaha	Madagascar	0.1
	22 Apr 2021 09:00	Andrapengy	Madagascar	0.1
	22 Apr 2021 09:00	Ambinany	Madagascar	0.1
	22 Apr 2021 09:00	Antalaha	Madagascar	0.1
	23 Apr 2021 13:30	Mkadini	Tanzania	0.1
	24 Apr 2021 17:30	Mpafu	Tanzania	0.1
	24 Apr 2021 17:30	Buuni Village	Tanzania	0.1
	23 Apr 2021 15:45	Somanga	Tanzania	0.1
	23 Apr 2021 15:45	Pombwe	Tanzania	0.1
	23 Apr 2021 15:45	Jaja	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.