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

23 Apr 2021 12 UTC

click on

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
Exposed population	No people in Category 1 or higher
Maximum wind speed	54 km/h
Maximum storm surge	0.1 m (23 Apr 17:30 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	54 km/h	0.1 m	136 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)

TOP

Wind

112 km/h

No people by wind speeds of Tropical Storm strength or above

Wind exposed population - AoIs

No exposed population (in Tropical Storm or higher) based on the bulletin of 23 Apr 2021 12:00 UTC

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	-		-	-	-	-	-	Seychelles
4	22 Apr 2021 00:00	104	-	-	-	-	-	-	-
5	22 Apr 2021 12:00	101	-	-	-	-	-	-	-
6	23 Apr 2021 00:00	104	-	-	-	-	-	-	-
7	23 Apr 2021 12:00	54	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

TOP

Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 23 Apr 2021 12:00 UTC

Level	Country	Population
250-500 mm	Tanzania	5,408
100-250 mm	Tanzania, Mozambique	216,373	+
	Tanzania	150,493
	Mozambique	65,880
50-100 mm	Tanzania, Mozambique, Comoros, Madagascar	2,294,188	+
	Tanzania	834,884
	Mozambique	1,117,217
	Comoros	27,111
	Madagascar	314,976

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	20 Apr 2021 12:00	160	7 thousand			-	-	-	-	Tanzania, Mozambique
2	21 Apr 2021 00:00	165	-		-	-	-	-	-	Seychelles
3	21 Apr 2021 12:00	299	Few people			-	-	-	-	Seychelles, Tanzania
4	22 Apr 2021 00:00	349	-		-	-	-	-	-	Seychelles
5	22 Apr 2021 12:00	230	-	-	-	-	-	-	-
6	23 Apr 2021 00:00	273	-		-	-	-	-	-	Madagascar
7	23 Apr 2021 12:00	362	220 thousand				-	-	-	Tanzania, Mozambique, Comoros, Madagascar

Impact estimation for the next 72h

TOP

StormSurge

0.1 m

The maximum Storm surge height is 0.1m in Taandani, Tanzania. This height is estimated for 23 Apr 2021 17:30 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 23 Apr 2021 12:00 UTC

Alert	Date (UTC)	Name	Country	Storm surge height (m)
	23 Apr 2021 17:30	Taandani	Tanzania	0.1
	23 Apr 2021 17:30	Chekea	Tanzania	0.1
	23 Apr 2021 17:30	Uchangani	Tanzania	0.1
	23 Apr 2021 17:30	Bopwe	Tanzania	0.1
	23 Apr 2021 17:30	Chake	Tanzania	0.1
	23 Apr 2021 17:30	Ziwani	Tanzania	0.1
	23 Apr 2021 17:30	Kijichame	Tanzania	0.1
	23 Apr 2021 17:30	Dutani	Tanzania	0.1
	23 Apr 2021 17:30	Hurumuzi	Tanzania	0.1
	23 Apr 2021 17:30	Vumba	Tanzania	0.1
	23 Apr 2021 17:30	Chokaningayo	Tanzania	0.1
	24 Apr 2021 17:00	Mkadini	Tanzania	0.1
	24 Apr 2021 17:00	Kigongoni	Tanzania	0.1
	24 Apr 2021 17:00	Bagamoyo	Tanzania	0.1
	23 Apr 2021 15:00	Mkwaja	Tanzania	0.1
	23 Apr 2021 13:15	Somanga	Tanzania	0.1
	23 Apr 2021 13:15	Matapatapa	Tanzania	0.1
	23 Apr 2021 13:15	Pombwe	Tanzania	0.1
	23 Apr 2021 15:30	Sakura	Tanzania	0.1
	23 Apr 2021 15:30	Ushongo Mabaoni	Tanzania	0.1
	24 Apr 2021 12:00	Sadani	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.