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Overall Green alert Tropical Cyclone for DAHLIA-17
in Indonesia, Christmas Islandfrom 30 Nov 2017 00:00 UTC to 03 Dec 2017 18:00 UTC
GDACS Event Report - Summary


Tropical Cyclone DAHLIA-17 can have a low humanitarian impact based on the Maximum sustained wind speed and the affected population and their vulnerability.

Updated: this report is based on advisory number 16: (04 Dec 2017 14:48).

  • Tropical Cyclone Tropical Storm (maximum wind speed of 102 km/h)
  • from 30 Nov 2017 00:00 UTC to 03 Dec 2017 18:00 UTC
  • Population affected by Category 1 (120 km/h) wind speeds or higher is 0
  • inserted at 03 Dec 2017 19:48:29 UTC

Extreme Rain

Potential rainfall is calculated based on rainfall observed by several microwave satellite sensors.

The image shows the total rainfall accumulation associated with the cyclone.

Storm surge

The maximum Storm surge height is  0.2m in Semarang, Indonesia. This height is estimated for 02 Dec 2017 01:00:00.


Known identifiers for this event: SH012018 (JTWCid)

Latest media headlines

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

NASA Finds Newly Formed Tropical Storm Dahlia Battling Wind Shear
Fri, 01 Dec 2017 19:50:00 +0100   sciencenewsline (en)

. 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 Tropical Storm Dahlia showed strongest thunderstorms north of its....

People and organisations:

More news...

Data, images, links, services and documents

For this events, GDACS has links to information from the following sources: EMM (1), JRC (159), (2), DesInventar (1), BOM (1), JTWC (1), NASA (1), NOAA (3), OCHA (1), TRMM (1), Unisys (1), WMO (1), ECMWF (4), HWRF (1), GFS (1), INFORM (2),

Access resources: List or RSS RSS

Further information and official advisories can be found at the Severe Weather Information Centre of the World Meteorological Organization, by clicking on the Tropical Cyclone symbols on the world map of the site.