Overall Green alert Tropical Cyclone for DAHLIA-17
in Indonesia, Christmas Island

Event summary

Tropical Cyclone DAHLIA-17 can have a low humanitarian impact based on the maximum sustained wind speed, exposed population and vulnerability.

GDACS ID TC 1000423
Name DAHLIA-17
From - To 30 Nov - 03 Dec
Exposed countries Indonesia, Christmas Island
Exposed population No people in Category 1 or higher
Maximum wind speed 130 km/h Category 1
Maximum storm surge 0.2 m (02 Dec 01:00 UTC)
Vulnerability -- (Indonesia)

GDACS Score

For more info on GDACS alert score click here.
Wind Storm surge Rainfall GDACS score
GDACS JTWC 65 km/h 0.2 m n.a. 0.5
Single TC: maximum expected impact (wind, storm surge, rainfall)
HWRF 83 km/h 0.3 m n.a. 0.5
GFS 56 km/h 0.6 m n.a. 0.5
ECMWF n.a 0.2 m n.a. 0.5
Maximum expected impact (wind, storm surge and rainfall) using different data sources.
Virtual OSOCC
Meteo assessment
Satellite products
Analytical products
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

Articles: 1 | About casualties: 0 | Last hour: 0

NASA Finds Newly Formed Tropical Storm Dahlia Battling Wind ShearFri, 01 Dec 2017 19:50:00 +0100.

. Published: December 1, 2017. Released by Tropical Storm Dahlia formed under the conditions of vertical wind shear, which displaced the bulk of its clouds north of the center. Infrared imagery from NASA's Aqua satellite revealed that Tropi
...(more)

View more news

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), (2), DesInventar (1), WMO (1), INFORM (2),