Overall Green alert Tropical Cyclone for ALCIDE-18
Off-shore

Event summary

Tropical Cyclone ALCIDE-18 can have a low humanitarian impact based on the maximum sustained wind speed, exposed population and vulnerability.

GDACS ID TC 1000527
Name ALCIDE-18
From - To 06 Nov - 11 Nov
Exposed countries Off-shore
Exposed population No people in Category 1 or higher
Maximum wind speed 185 km/h Category 3
Maximum storm surge
Vulnerability --

GDACS Score

For more info on GDACS alert score click here.
Wind Storm surge Rainfall GDACS score
GDACS JTWC 65 km/h 0 m n.a. 0.5
Single TC: maximum expected impact (wind, storm surge, rainfall)
HWRF n.a n.a. n.a. n.a.
GFS n.a n.a. n.a. n.a.
ECMWF n.a n.a. n.a. n.a.
Maximum expected impact (wind, storm surge and rainfall) using different data sources.
Virtual OSOCC
Meteo assessment
Satellite products
Analytical products
Madagascar, The Seychelles - Tropical cyclone ALCIDE update (ECHO 09 Nov 2018)Fri, 09 Nov 2018 10:45

  • Tropical cyclone ALCIDE continued south-south-west offshore over the Indian Ocean, weakening. On 9 November at 0:00 UTC, its centre was located approx. 400 km east of Antsiranana city (northern Madagascar) and 345 km south-east of Farquhar Group Islands (Seychelles), with maximum sustained winds of 167 km/h (equivalent to a Category 2 in the Saffir Simpson Scale).
  • Over the next 24 hours, it is forecast to move south, slightly weakening, but remaining a Category 2 tropical cyclone before turning north-east and then north-west on 11 November, remaining offshore and weakening to a Category 1 tropical cyclone. It should weaken to a tropical storm on 12 November and to a tropical depression on 13 November, dissipating over south-west Indian Ocean.
Madagascar, The Seychelles - Tropical cyclone ALCIDE update (ECHO 08 Nov 2018)Thu, 08 Nov 2018 11:02

  • Tropical cyclone ALCIDE continued south-west, strengthening. On 8 November at 0:00 UTC, its centre was located approx. 600 km east-north-east of Antsiranana City (northern Madagascar) and approx. 390 km south-east of Farquhar Group Islands (Outer Islands, Seychelles), with maximum sustained winds of 185 km/h (equivalent to a Category 3 on the Saffir Simpson Scale).
  • Over the next 24 hours, it is forecast to remain offshore continuing south-west and south, slightly weakening to a Category 2 tropical cyclone, before heading north-west on 10 November and weakening to a Category 1 tropical cyclone.
Madagascar, Mauritius, La Réunion - Tropical cyclone ALCIDE (ECHO 07 Nov 2018)Wed, 07 Nov 2018 10:36

  • Tropical cyclone ALCIDE formed over the south-west Indian Ocean on 6 November. On 7 November at 0:00 UTC, its centre was located approx. 1 100 km north of Mauritius Island, 1 230 km north-east of La Réunion and 870 km north-east of Antalaha town (Antsiranana Province, northern Madagascar), with maximum sustained winds of 93 km/h (tropical storm).
  • Over the next 24 hours, it is forecast to continue south-west, strengthening to Category 2 with winds up to 157 km/h, before decreasing to a tropical storm on the approach to Madagascar.
  • Uncertainty over the track and intensity means that it is difficult to assess the potential impact at this stage.
Madagascar, Mauritius, La Réunion - Tropical Cyclone THREE (ECHO 06 Nov 2018)Tue, 06 Nov 2018 10:49

  • A new Tropical Cyclone named THREE formed over south-west Indian Ocean on 6 November and started moving south-west offshore. On 6 November at 00:00 UTC, its centre was located approx. 1 265 km north-east of Mauritius Island, 1 425 Km north-east of La Réunion and 1 300 km north-east of Antalaha town (Antsiranana Province, northern Madagascar), with maximum sustained winds of 65 km/h (Tropical Storm).
  • Over the next 24 h, it is forecast to continue moving south-west over the ocean, strengthening but remaining a Tropical Storm.
Detailed event map. European Union, 2024. 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

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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), INFORM (1), (1),