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Overall Green alert Tropical Cyclone for DON-17
in Trinidad and Tobago, Grenadafrom 17 Jul 2017 21:00 UTC to 18 Jul 2017 21:00 UTC
Automatic impact report for tropical cyclone DON-17
alertimage

Current Green alert for wind impact in Trinidad and Tobago, Grenada as of 18 Jul 2017 21:00:00 UTC

This tropical cyclone is expected to have a low humanitarian impact based on the storm strength and the affected population in the past and forecasted path.

Current storm status

This report is for advisory number 5 of tropical cyclone DON-17 issued at 18 Jul 2017 21:00 UTC (GDACS Event ID 1000370, Latest episode ID: 5, inserted at 18 Jul 2017 18:50 UTC ).

Current impact estimate:

  • Population affected by Category 1 (120 km/h) wind speeds or higher is 0
  • Tropical Storm (maximum wind speed of 83 km/h)
  • Vulnerability of affected countries: Medium

Impact of Extreme Wind

1  2  3  4  5  
Cloud map
Cloud map. Track and wind-buffer map. Green area: Area that can be affected by winds of more than 64 km/h (Tropical Storm strength). Orange area: Same, for winds of more than 92 km/h. Red area: Same, for winds above 120 km/h (Hurricane or Typhoon strength) (Source: JRC)
Cloud Map Zoomed on last forecast
Cloud Map Zoomed on last forecast. The zoomed map on the last track. (Source: JRC)

Affected population

Up to 110000 people people can be affected by wind speeds of tropical storm strength or above. In addition, no people people are living in coastal areas below 5m and can therefore be affected by storm surge.

Affected country

Country
Trinidad & Tobago
Grenada

Affected provinces

Region Province Country Population
Trinidad & Tobago Trinidad and Tobago 1.2 million people
Grenada Grenada 95000 people

Affected Populated Places (first 20 records)

Name Region Province Country City class Population Distance
Saint George's Saint George Grenada Capital 4300 people 194 km

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Nearby and affected airports
Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Point Salines International GND 12 Civ. Paved Yes 9000 197 km
La Blanquilla 17 0 500 km
La Orchila 2 Mil. Paved No 9800 674 km
Los Roques LRV unknown 0 736 km
Major ports
Name LOCODE Country Distance
Saint George's GDSTG Grenada 195 km
Blanquilla Island Venezuela 505 km
Islas Des Roques Venezuela 735 km

See complete report

Event time line

The storm evolution is shown in the table below. Alert levels and population estimates are related to the area from a point to the next.

Advisory Alert color Date (UTC) Category Wind speed Wind gusts Population affected
by cyclone winds (>120km/h)
Location (lat, lon)
1
GREEN
17 Jul 2017 21:00 Tropical storm 65 km/h (40 mph) 83 km/h (52 mph) no people 11.2, -52.6
2
GREEN
18 Jul 2017 03:00 Tropical storm 74 km/h (46 mph) 93 km/h (57 mph) no people 11.3, -54.6
3
GREEN
18 Jul 2017 09:00 Tropical storm 83 km/h (52 mph) 102 km/h (63 mph) no people 11.5, -56.2
4
GREEN
18 Jul 2017 15:00 Tropical storm 65 km/h (40 mph) 93 km/h (57 mph) no people 11.5, -58
5
GREEN
18 Jul 2017 21:00 Tropical storm 65 km/h (40 mph) 83 km/h (52 mph) no people 11.7, -60
5
GREEN
19 Jul 2017 06:00 Tropical storm 65 km/h (40 mph) 83 km/h (52 mph) no people 11.9, -63.1
5
GREEN
19 Jul 2017 18:00 Tropical depression 56 km/h (34 mph) 74 km/h (46 mph) no people 12, -67.5

Previous advisories

For accessing reports of previous advisories, please click on the advisory number in the table below.

IDAlert ColorDate (UTC)CategoryMaximum sustained
wind speed (km/h)
Population affected
by cyclone winds (>120km/h)
Affected countries
1 17 Jul 2017 21:00 Tropical storm 74 No people affected Trinidad and Tobago, Grenada
2 18 Jul 2017 03:00 Tropical storm 93 No people affected Trinidad and Tobago, Grenada, Netherlands Antilles, Venezuela, Aruba
3 18 Jul 2017 09:00 Tropical storm 93 No people affected Trinidad and Tobago, Grenada, Netherlands Antilles, Venezuela, Aruba, Colombia
4 18 Jul 2017 15:00 Tropical storm 65 No people affected Trinidad and Tobago, Grenada
5 18 Jul 2017 21:00 Tropical storm 65 No people affected Trinidad and Tobago, Grenada

More information

Data resources

For a full list of available products related to this event, please refer to the GDACS Resources page.

About the data

JRC set up an automatic routine that includes the Tropical Cyclone (TC) bulletins produced by the National Oceanic and Atmospheric Administration (NOAA) and the Joint Typhoon Warning Center (JTWC) into a single database, covering all TC basins.

JRC calculates areas affected by high winds (wind buffers at 39, 58 and 74mph). This is done using the maximum reported wind radius (maximum of 4 quadrants) or, in case no wind radii are provided, through a regression analysis based on historical data. JRC also calculates the area affected by storm surge using HyFlux2 (hydrodynamic software).

Sources for data on critical infrastructure are: JRC NUMAS database (nuclear plants), ESRI (hydro dams, 1996), Global Discovery (airports, ports and cities).

Population data is from LandScan 2014.

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.