Overall Green alert Tropical Cyclone for JOBO-21
in Tanzania, Seychelles

Event summary

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

GDACS ID TC 1000779
Name JOBO-21
From - To 21 Apr - 24 Apr
Exposed countries Tanzania, Seychelles
Exposed population No people in Category 1 or higher
Maximum wind speed 111 km/h Tropical storm
Maximum storm surge 0.4 m (24 Apr 17:00 UTC)
Vulnerability Medium (Tanzania)


For more info on GDACS alert score click here.
Wind Storm surge Rainfall GDACS score
GDACS 111 km/h 0.4 m n.a. 0.5
Single TC: maximum expected impact (wind, storm surge, rainfall)
HWRF 137 km/h 0.2 m 699 mm 0.5
GFS 130 km/h 0.2 m 527 mm 0.5
ECMWF 112 km/h 0.2 m 504 mm 0.5
Beta Version - All weather systems in the area: maximum expected impact (wind, storm surge, rainfall)
Maximum expected impact (wind, storm surge and rainfall) using different data sources.
Virtual OSOCC
Meteo assessment
Satellite products
Analytical products
Seychelles, Comoros, Tanzania - Tropical Cyclone JOBO update (ECHO 22 Apr 2021)Thu, 22 Apr 2021 16:11

  • Tropical Cyclone JOBO continues west over the Indian Ocean and on 22 April at 0.00 UTC, its centre was located about 100 km south of Aldaba island (Seychelles), 290 km north-east of Anjouan island (Comoros) and 660 km east of the border between Mozambique and Tanzania, with maximum sustained wind of 93 km/h. 
  • JOBO is forecast to decrease its intensity, as it moves north-west over the western Indian Ocean, passing north of Comoros on 22-23 April. Afterwards, JOBO is expected to reach the central coast of Tanzania on 24-25 April. 
  • On 22 April, heavy rain, strong wind and high waves are forecast over Aldaba. Heavy rain could affect northern of Comoros and coastal Tanzania over 22-23 April.
Detailed event map. European Union, 2021. Map produced by EC-JRC.
The boundaries and the names shown on this map do not imply official endorsement or acceptance by the European Union.

Updates on volcanic activity (Smithsonian)

Latest media headlines

Articles: 14 | About casualties: 0 | Last hour: 0

Met department issues warning on cyclone, but says Mombasa safeTue, 27 Apr 2021 23:01:00 +0200.

Kenya Meteorological Department said its effects will not be felt by residents at the Coast. [Courtesy] Three key government agencies at the Kenyan Coast have issued warnings over the imminent effects of a tropical storm named Jobo. This is
Le cyclone Jobo passe au nord de Mayotte 23/04/2021Fri, 23 Apr 2021 14:18:00 +0200.

Dès le 10 avril, le Centre Météo-France de la Réunion a commencé à surveiller un amas nuageux avec une circulation dans le sens des aiguilles d’une montre, qui est le sens cyclonique dans l’hémisphère sud. Mais c’est le 19 avril que la zone
Alerte cyclonique I Les rafales maximales pourraient atteindre 70km/hThu, 22 Apr 2021 16:24:00 +0200.

Les fortes tempêtes tropicales modérées nommées Jobo qui frappent l’archipel ces derniers jours constituent une phase d’avant cyclone , selon Fahad Ben Abdou, prévisionniste météo qui explique que ces fortes pluies incessantes sont les effe
21 au 25/04 : alerte tempête tropicale (Jobo) pour les Seychelles et l ... Thu, 22 Apr 2021 10:30:00 +0200.

22/04: JOBO reste au stade de forte tempête tropicale en passant actuellement au Sud immédiat d’Aldabra. Le système devrait se maintenir à une forte intensité aujourd’hui et poursuivre son chemin vers l’ouest. Les vents maximaux soufflent à

Estimated casualties (PAGER)

USGS estimates the number of casualties for each earthquake for the Prompt Assessment of Global Earthquakes for Response (PAGER) product.
The graph shows the current fatalities estimate.

Exposed population

Data, images, links, services and documents

For this events, GDACS has links to information from the following sources: EC-JRC (38), (1), WMO (1), INFORM (2),