GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

Green Tropical Cyclone alert for SANVU-12 in Guam from 22/05/2012 00:00 UTC to 27/05/2012 06:00 UTC
Automatic impact report for tropical cyclone SANVU-12
alertimage

Green alert for wind impact in Guam

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 25 of tropical cyclone SANVU-12 issued at 5/27/2012 6:00:00 AM (GDACS Event ID 30383, Latest episode ID: 25).

Current impact estimate:

  • Population affected by Category 1 (120 km/h) wind speeds or higher is 0
  • Tropical Storm (maximum wind speed of 148 km/h)
  • Vulnerability of affected countries: Medium

Impact of Extreme Wind

Cloud map
Cloud map. The map shows the areas affected by tropical storm strength winds (green), 58mph winds (orange) and cyclone wind strengths (red). (Source: JRC)

Affected population

Up to no people people can be affected by wind speeds of cyclone 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

Affected provinces

Affected cities

Critical infrastructure

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

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 (lon, lat)
1
green
5/21/2012 6:00:00 AM Tropical depression 47 km/h (29 mph) 64 km/h (40 mph) no people 145.9, 10.8
2
green
5/21/2012 12:00:00 PM Tropical depression 47 km/h (29 mph) 64 km/h (40 mph) no people 145, 11.2
3
green
5/21/2012 6:00:00 PM Tropical storm 64 km/h (40 mph) 84 km/h (52 mph) no people 144.4, 12.4
4
green
5/22/2012 Tropical storm 74 km/h (46 mph) 93 km/h (58 mph) no people 144.1, 13.4
5
green
5/22/2012 6:00:00 AM Tropical storm 74 km/h (46 mph) 93 km/h (58 mph) no people 143.4, 14.1
6
green
5/22/2012 12:00:00 PM Tropical storm 84 km/h (52 mph) 101 km/h (63 mph) no people 142.3, 14.8
6
green
5/23/2012 Tropical storm 93 km/h (58 mph) 121 km/h (75 mph) no people 140.9, 16.3

Previous advisories

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

AdvisoryAlert colorDate (UTC)CategoryMaximum sustained
wind speed (km/h)
Population affected
by cyclone winds (>120km/h)
Affected countriesDate added (UTC)
15/21/2012 6:00:00 AM Tropical storm 111 No people affected   09:46:27 GMT
25/21/2012 12:00:00 PM Tropical storm 111 No people affected   03:04:33 GMT
35/21/2012 6:00:00 PM Category 1 130 No people affected   08:47:50 GMT
45/22/2012 12:00:00 AM Category 1 148 No people affected Guam 07:03:19 GMT
55/22/2012 6:00:00 AM Category 1 138 No people affected Guam 11:47:08 GMT
65/22/2012 12:00:00 PM Tropical storm 93 No people affected   01:46:45 GMT
75/22/2012 6:00:00 PM Tropical storm 84 No people affected   08:16:53 GMT
85/23/2012 12:00:00 AM Category 1 138 No people affected   03:17:05 GMT
95/23/2012 6:00:00 AM Category 1 138 No people affected   08:17:29 GMT
105/23/2012 12:00:00 PM Category 1 138 No people affected   01:17:28 GMT
115/23/2012 6:00:00 PM Category 2 158 No people affected   08:49:31 GMT
125/24/2012 12:00:00 AM Category 1 148 No people affected   08:21:00 GMT
135/24/2012 6:00:00 AM Category 1 138 No people affected   08:52:38 GMT
145/24/2012 12:00:00 PM Category 1 138 No people affected   03:28:22 GMT
155/24/2012 6:00:00 PM Category 1 138 No people affected   08:17:27 GMT
165/25/2012 12:00:00 AM Category 2 158 No people affected   02:47:26 GMT
175/25/2012 6:00:00 AM Category 1 148 No people affected   08:18:54 GMT
185/25/2012 12:00:00 PM Category 1 148 No people affected   01:48:33 GMT
195/25/2012 6:00:00 PM Category 1 138 No people affected   08:18:52 GMT
205/26/2012 12:00:00 AM Category 1 138 No people affected   02:56:09 GMT
215/26/2012 6:00:00 AM Category 1 130 No people affected   07:48:31 GMT
225/26/2012 12:00:00 PM Category 1 121 No people affected   04:10:23 GMT
255/27/2012 6:00:00 AM Tropical storm 84 No people affected   03:47:19 GMT

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

The information on storm characteristics is taken from a web service provided by the Pacific Disaster Center, which processes the official advisory bulletins.

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 2010.

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.