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 12 UTC

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to select bulletin time

Meteorological source:

GDACS JTWC

Impact Single TC

GFS
HWRF
ECMWF

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	ECMWF
Exposed countries	Tanzania, Seychelles
Exposed population	No people in Category 1 or higher
Maximum wind speed	108 km/h
Maximum storm surge	0.2 m (21 Apr 15:45 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
ECMWF Current	108 km/h	0.2 m	299 mm	0.5
ECMWF Overall	112 km/h	0.2 m	504 mm	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

112 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 12:00 UTC

Category	Country	Population
Tropical Storm	Tanzania, Seychelles	396	+
	Tanzania	01
	Seychelles	395

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	TS	Cat. 1	Cat. 2	Cat. 3	Cat. 4	Cat. 5	Countries
1	20 Apr 2021 12:00	90	-	-	-	-	-	-	-
2	21 Apr 2021 00:00	112	-		-	-	-	-	-	Seychelles
3	21 Apr 2021 12:00	108	-		-	-	-	-	-	Tanzania, 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 12:00 UTC

Level	Country	Population
250-500 mm	Seychelles	180
100-250 mm	Seychelles, Comoros	44,316	+
	Seychelles	159
	Comoros	44,157
50-100 mm	Tanzania, Seychelles, Comoros, Madagascar	242,289	+
	Tanzania	24,003
	Seychelles	156
	Comoros	200,744
	Madagascar	17,386

Rain Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

N°	Date (UTC)	Max Rainfall (mm)	Pop >100mm or higher	100-250	250-500	500-750	750-1000	>1000	Countries
1	20 Apr 2021 12:00	160	7 thousand		-	-	-	-	Tanzania, Mozambique
2	21 Apr 2021 00:00	165	-	-	-	-	-	-	Seychelles
3	21 Apr 2021 12:00	392	40 thousand			-	-	-	Tanzania, Seychelles, Comoros, Madagascar

Impact estimation for the next 72h

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StormSurge

0.2 m

The maximum Storm surge height is 0.2m in Somanga, Tanzania. This height is estimated for 21 Apr 2021 15:45 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 12:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	21 Apr 2021 15:45	Somanga	Tanzania	0.2
	21 Apr 2021 15:45	Matapatapa	Tanzania	0.2
	21 Apr 2021 16:15	Magawa	Tanzania	0.1
	21 Apr 2021 16:15	Msindaji	Tanzania	0.1
	21 Apr 2021 16:15	Mchungu	Tanzania	0.1
	21 Apr 2021 14:45	Kolekole	Tanzania	0.1
	21 Apr 2021 14:45	Kilale	Tanzania	0.1
	21 Apr 2021 14:45	Mvuni	Tanzania	0.1
	21 Apr 2021 14:45	Kiriwani	Tanzania	0.1
	21 Apr 2021 14:45	Tanga	Tanzania	0.1
	21 Apr 2021 12:15	Pombwe	Tanzania	0.1
	21 Apr 2021 12:45	Jaja	Tanzania	0.1
	21 Apr 2021 18:00	Ecota	Mozambique	0.1
	21 Apr 2021 18:00	Nacala Velha	Mozambique	0.1
	21 Apr 2021 18:00	Namelala	Mozambique	0.1
	21 Apr 2021 18:00	Capelelene	Mozambique	0.1
	21 Apr 2021 18:00	Nhiendgi	Mozambique	0.1
	21 Apr 2021 18:00	Maaia	Mozambique	0.1
	21 Apr 2021 18:00	Nacala	Mozambique	0.1
	21 Apr 2021 18:00	Chepa	Mozambique	0.1
	21 Apr 2021 18:00	Matiquite	Mozambique	0.1
	21 Apr 2021 18:00	Minhauine	Mozambique	0.1
	21 Apr 2021 15:00	Kipara	Tanzania	0.1
	21 Apr 2021 15:00	Dar es Salaam	Tanzania	0.1
	21 Apr 2021 15:00	Msasani	Tanzania	0.1
	21 Apr 2021 15:00	Magogoni	Tanzania	0.1
	21 Apr 2021 15:00	Mjimwema	Tanzania	0.1
	21 Apr 2021 15:00	Mboamaji	Tanzania	0.1
	21 Apr 2021 15:00	Bandarini	Tanzania	0.1
	21 Apr 2021 15:00	Kutani	Tanzania	0.1
	21 Apr 2021 16:15	Kisiju	Tanzania	0.1
	21 Apr 2021 13:15	Mkadini	Tanzania	0.1
	21 Apr 2021 16:30	Gulioni	Tanzania	0.1
	21 Apr 2021 16:30	Mapopwe	Tanzania	0.1
	21 Apr 2021 16:30	Mdudu Mdogo	Tanzania	0.1
	21 Apr 2021 16:30	Dikoni	Tanzania	0.1
	21 Apr 2021 16:30	Chwaka	Tanzania	0.1
	21 Apr 2021 16:30	Kitogani	Tanzania	0.1
	21 Apr 2021 16:30	Ukongoroni	Tanzania	0.1
	21 Apr 2021 16:30	Pingwe	Tanzania	0.1
	21 Apr 2021 16:30	Paje	Tanzania	0.1
	21 Apr 2021 13:45	Bejongoro	Madagascar	0.1
	21 Apr 2021 13:45	Ampandrano	Madagascar	0.1
	21 Apr 2021 13:45	Andrafialava	Madagascar	0.1
	21 Apr 2021 13:45	Mandrony	Madagascar	0.1
	21 Apr 2021 13:45	Maromanjo	Madagascar	0.1
	21 Apr 2021 13:45	Anompaka	Madagascar	0.1
	21 Apr 2021 13:45	Madirotelo	Madagascar	0.1
	21 Apr 2021 13:45	Mahitsihazo	Madagascar	0.1
	21 Apr 2021 13:45	Andamoty	Madagascar	0.1
	21 Apr 2021 13:45	Marokitrana	Madagascar	0.1
	21 Apr 2021 13:45	Bevoay	Madagascar	0.1
	21 Apr 2021 13:45	Maromandia	Madagascar	0.1
	21 Apr 2021 16:15	Dondo	Tanzania	0.1
	21 Apr 2021 16:30	Kiombani	Tanzania	0.1
	21 Apr 2021 21:00	Ampaha	Madagascar	0.1
	21 Apr 2021 21:00	Andrapengy	Madagascar	0.1
	21 Apr 2021 21:00	Ambinany	Madagascar	0.1
	21 Apr 2021 21:00	Antalaha	Madagascar	0.1
	22 Apr 2021 00:45	Quionga	Mozambique	0.1
	22 Apr 2021 00:45	Quiwia	Mozambique	0.1
	21 Apr 2021 16:30	Kiechuru	Tanzania	0.1
	22 Apr 2021 01:15	Miquindane	Mozambique	0.1
	22 Apr 2021 01:15	Lurio	Mozambique	0.1
	22 Apr 2021 01:15	Mauala	Mozambique	0.1
	22 Apr 2021 01:15	Arire	Mozambique	0.1
	21 Apr 2021 15:00	Kibele	Tanzania	0.1
	21 Apr 2021 15:00	Mkuuni	Tanzania	0.1
	22 Apr 2021 17:30	Donge	Tanzania	0.1
	22 Apr 2021 17:30	Mkokotoni	Tanzania	0.1
	22 Apr 2021 17:30	Bwereu	Tanzania	0.1
	22 Apr 2021 17:30	Banda Kuu	Tanzania	0.1
	22 Apr 2021 17:30	Gazija	Tanzania	0.1
	23 Apr 2021 14:00	Sadani	Tanzania	0.1
	21 Apr 2021 16:15	Nyambati	Tanzania	0.1
	21 Apr 2021 16:15	Salale	Tanzania	0.1
	21 Apr 2021 13:00	Betsimiranja	Madagascar	0.1
	21 Apr 2021 13:00	Ambatonjanahary	Madagascar	0.1
	21 Apr 2021 13:00	Ambinanililabe	Madagascar	0.1
	21 Apr 2021 13:00	Anjiabe	Madagascar	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.