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Orange Earthquake Alert in Nepal

Summary

On 9/18/2011 12:40:48 PM UTC an earthquake of magnitude 6.8 and depth 20.7km has struck an moderately populated area in the Mechi Province (population: 1.2 million) in Nepal. GDACS estimates the likelihood for need of international humanitarian intervention to be medium (Orange alert).

This earthquake can have a medium humanitarian impact since the affected region is moderately populated and has medium resilience for natural disasters.

The earthquake 159km from the city of Thimphu. The nearest populated places are Ghunsa (15km), Lhonak (8km). It is a mountainous region with a maximum altitude of 8361 m.

Humanitarian Impact impact 
Population resilience vul 
Tsunami probability tsunami 
Landslide probability slope 
Nuclear radiation probability radiation 

Caution: this information is based on risk models. Whether international humanitarian aid is needed must be decided by an expert.

This report was automatically updated by a computer on: 9/18/2011 1:01:09 PM UTC (20 minutes after the event)

Downloads: Word report, PDF report

Explanation of alert calculation: Show

Google map Population map
poplegendPopulation Density near epicenter (people/km2). Image area: 6x4 decimal degrees (approx. 650x450km2).
population map

Earthquake epicentre: best estimate eq_logo    previous estimates: eq_icon

Earthquake Event

Geological map
geological map

Characteristics for this report

Information source World Data Centre for Seismology, Denver (NEIC)
Link to source event report (usc0005wg6)
PAGER report (c0005wg6)
Magnitude 6.8 M
Depth 20.7 km
Location

Geographic coordinates (latitude/longitude): 27.7296, 88.0825
Nepal , Mechi Province (population: 1205060).
Seismic region: Sikkim.

The earthquake happened in Nepal , Mechi Province (population: 1205060). , 159km from the city of Thimphu. The nearest populated places are Ghunsa (15km), Lhonak (8km).

It is a mountainous region with a maximum altitude of 8361 m.

Time time 9/18/2011 12:40:48 PM (UTC, Universal Standard Time)
9/18/2011 6:33:08 PM (Estimated local solar time)
Sun, 9/18/2011 13:40 CET (Brussels, Paris, Rome)
Sun, 9/18/2011 07:40 EST (New York, Washington)
Sun, 9/18/2011 04:40 PST (San Francisco, Los Angeles)
Sun, 9/18/2011 20:40 AWST (Australian Western Standard Time)

Previous reports for this earthquake.

Earthquake reportTsunami reportEvent Date/TimeLat/LonMagnitudeDepth (km)SourcePublication Date/TimeDelay
1117879/18/2011 12:40:47 PM UTC27.764, 88.1816.810PTWC (pt11261000)9/18/2011 12:54:49 PM UTC14min
1117889/18/2011 12:40:48 PM UTC27.7296, 88.08256.820.7NEIC (usc0005wg6)9/18/2011 1:01:09 PM UTC20min

Earthquake Impact Details

shakemap

Potentially affected People

The population in the area of this earthquake if 13 people/km?. (Data source).

The earthquake occurred at 18h local time. At this time a day, more people are at work and therefore more vulnerable to collapsing office buildings. During traffic hours, people can be affected by collapsing bridges and other road infrastructure.

Population Data
Radius (km) Population Density (people/km?)
1
2
5
10 362 
20 2704 
50 106406  13 
100 1866670  59 
200 23142370  184 

Damage

The affected region has low level of urban area (0%) and a high level of cultivated area (26.7%). In urban areas more damage can be expected than in cultivated or natural areas. (Data source)

Radius (km)urban areascultivated areasother
200 0.08% 26.71% 73.2%
100 0.01% 12.59% 87.38%
50 0% 2.33% 97.66%
10 0% 0% 1000%

Resilience and Vulnerability

Resilience is the capacity of the population to cope with a hazard. Since much of investments in earthquake preparedness and available funds for quick response is related to household income, the GDP per capita can be used as a rough indicator of resilience.

Nepal has a GDP per capita of 222 PPP$ (Parity Purchasing Power Dollar, about 1 Euro) and is therefore part of the medium level income countries. Therefore, the earthquake happened in an area of medium resilience.

Based on the combination of 9 indicators, ECHO attributes Nepal a medium vulnerability.

ECHO Intervention Priority Ranking for Nepal
vulnerabilitylevel
Overall situation
Human Development hdi
Human Poverty hpi
Exposure to Major Disasters
Natural Disasters natdis
Conflicts conflicts
Humanitarian effects of population movement
Refugees and IDPs refugees
Health of children under five
Undernourishment food
Mortality rates under5
Other vulnerability factors
Access to health care phis
Prevalence of HIV, TBC and malaria htm
Gender-specific Human Development gdi
Gini Index gini
Source ECHO
Key: bad Bad - medium Medium - good Good - nodata No data

Exposure

Both conditions for survival and conditions for delivering aid strongly depend on the current weather and temperature. The following graphs show the current and forecast weather.

Current weather conditions and forecasts at earthquake location (lat: 27.7296 - long: 88.0825) (Data source).

Temperature chart currently not available. Try to refresh page.
Precipitation chart currently not available. Try to refresh page.
Cloud cover chart currently not available. Try to refresh page.

More detailed observations at closest weather station (Taplejung): WeatherByWeb - NOAA

Probability of Secondary effects

slopelevel Landslides: The maximum slope in the area of the earthquake is 103.987% and the maximum altitude is 8361 m. Since this is a unknown slope, the risk of earthquake induced landslides is unknown. Note, however, that the slope data is not reliable on a local scale, while landslides depend very much on local topography, soil and meteorological conditions. More...

Critical infrastructure

The following critical infrastructure is nearby and could be affected by the earthquake:

The distance to nuclear installations is evaluated based on a 1999 UN dataset containing the location of nuclear plants in the world. If plants are near and the earthquake magnitude is above 6.5, the alert is set to orange. Note that the location of plants is approximate with errors of up to 100km.

Getting there and away

The nearest civilian airport (Taplejung) is at 61km from the epicenter. Other airports are: Thakurgaon (194km), Jogbani (177km), Biratnagar (161km), Rajbiraj (190km), Chandragadhi (129km), Baghdogra (119km), Hasimara (171km), Bhojpur (120km), Lamidanda (140km), Tumlingtar (99km), Taplejung (61km), Rumjartar (157km), Ramechap (115km), Paro (137km), Phaplu (148km), Jiri (182km), Lukla (133km)

Ports nearby are: [None]

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.

 

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