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Green earthquake alert Japan(M=6.1) potentially affecting 1.8 million people.

GDACS impact assessment
gdacs logo       

The Global Disaster Alert and Coordination System provides near real-time alerts about natural disasters around the world and tools to facilitate response coordination, including media monitoring, map catalogues and Virtual On-Site Operations Coordination Centre.

 

Summary

On 11/23/2011 7:24:31 PM UTC an earthquake of magnitude 6.1 and depth 33.3km has struck an moderately populated area in the Tohoku Province (population: 9.9 million) in Japan. GDACS estimates the likelihood for need of international humanitarian intervention to be low (Green alert).

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

The earthquake 110km from the city of Sendai. The nearest populated places are Mito (146km), Yamagata (138km). It is a mountainous region with a maximum altitude of 1119 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: 11/23/2011 11:57:31 PM UTC (4 hours 32 minutes after the event)

Explanation of alert calculation: Show


The impact model combines magnitude (M), population within 100km (P) and vulnerability/resilience ECHO average score (V) using the formula:
alertscore = max(M-4.5,0) * log10(max(P / 80000,0))^ 0.5 * max(V,0.5) ^ 1.5 / 3
The weighted product of magnitude (6.1), population (1845678) and vulnerability (0.5) results in an alertscore of 0.62266888189903
Then alert is Red if alertscore>2, Orange if alertscore>1 and Green if alertscore

poplegend Population Density near epicenter (people/km2). Image area: 6x4 decimal degrees (approx. 650x450km2).
eq_logo

Earthquake epicentre: best estimate    previous estimates: eq_icon

Earthquake Event

Characteristics for this report

Information source World Data Centre for Seismology, Denver (NEIC)
Link to source event report (usc0006x3y)
PAGER report (c0006x3y)
Magnitude 6.1 M
Depth 33.3 km
Location

Geographic coordinates (latitude/longitude): 37.3735, 141.3868
Japan , Tohoku Province (population: 9984608).
Seismic region: Near The East Coast Of Honshu.

The earthquake happened in Japan , Tohoku Province (population: 9984608). , 110km from the city of Sendai. The nearest populated places are Mito (146km), Yamagata (138km).

It is a mountainous region with a maximum altitude of 1119 m.

Time <img src= Green earthquake alert Japan(M=6.1) potentially affecting 1.8 million people." /> 11/23/2011 7:24:31 PM (UTC, Universal Standard Time)
11/24/2011 4:50:04 AM (Estimated local solar time)
Wed, 11/23/2011 20:24 CET (Brussels, Paris, Rome)
Wed, 11/23/2011 14:24 EST (New York, Washington)
Wed, 11/23/2011 11:24 PST (San Francisco, Los Angeles)
Thu, 11/24/2011 03:24 AWST (Australian Western Standard Time)

Previous reports for this earthquake.

Earthquake reportTsunami reportEvent Date/TimeLat/LonMagnitudeDepth (km)SourcePublication Date/TimeDelay
shakemap 11334111/23/2011 7:24:32 PM UTC37.3736, 141.50995.937.7NEIC (usc0006x3y)11/23/2011 7:44:05 PM UTC19min
Temperature chart currently not available. Try to refresh page. 11334311/23/2011 7:24:31 PM UTC37.3735, 141.38686.133.3NEIC (usc0006x3y)11/23/2011 11:57:31 PM UTC272min

Earthquake Impact Details

Precipitation chart currently not available. Try to refresh page.

Potentially affected People

The population in the area of this earthquake if 12 people/km?. (Data source).

The earthquake occurred at 4h local time. At this time a day, more people are at home and therefore more vulnerable to collapsing residential 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
20
50 100773  12 
100 1845678  58 
200 10384040  82 

Damage

The affected region has low level of urban area (0.2%) and a high level of cultivated area (5.7%). In urban areas more damage can be expected than in cultivated or natural areas. (Data source)

Radius (km)urban areascultivated areasother
200 0.29% 5.75% 93.95%
100 0.3% 2.96% 96.72%
50 0% 0.41% 99.58%
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.

Japan has a GDP per capita of 42317 PPP$ (Parity Purchasing Power Dollar, about 1 Euro) and is therefore part of the high level income countries. Therefore, the earthquake happened in an area of high resilience.

Based on the combination of 9 indicators, ECHO attributes Japan a low vulnerability.

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: 37.3735 - long: 141.3868) (Data source).

Cloud cover chart currently not available. Try to refresh page.
slopelevel
nuclevel

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

Probability of Secondary effects

damlevel Landslides: The maximum slope in the area of the earthquake is 20.708% and the maximum altitude is 1119 m. Since this is a low slope, the risk of earthquake induced landslides is low. 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:

  • envelope Nuclear power plants: There are no nuclear facilities nearby the epicenter.
  • ocha Hydrodams: The following hydrodam installations are near the epicenter: (35km), FUKUSHIMA-DAINI (35km), ONAGAWA (116km), TOKAI (123km)

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 (Sendai) is at 98km from the epicenter. The Military airfield of Fukushima is located at 89km from the epicenter. Other airports are: Ryugasaki South (196km), Ryugasaki (192km), (183km), Hyakuri (159km), Suzumenomiya (170km), Utsunomiya (167km), Otawara (135km), Fukushima (89km), Sendai (98km), Kasuminome (107km), Matsushima (118km), Junmachi (149km), Ojojibara (138km)

Ports nearby are: Choshi (188km), Kashima (174km), Hitachi (119km), Onahama (65km), Soma (66km), Shiogama (112km), Ishinomaki (118km), Onagawa (120km), Kesennuma Ko (169km), Ofunato (191km)

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.

 

Joint Initiative of the United Nations and the European Commission -- ocha Contact us -- Disclaimer
jrc globesec ipsc

EUROPA - ECHO - Humanitarian Aid Office of the European Commission

gdacs logo Information on this website is collected from scientific and media sources in participation with European Commission Joint Research Centre, UNOSAT and OCHA ReliefWeb.

© European Union, 2004-2011 Reproduction authorised provided the source is acknowledged, except for commercial purposes.

Financially
supported for 2008-2009 by EC MIC
impact
GDACS impact assessment
vul       

The Global Disaster Alert and Coordination System provides near real-time alerts about natural disasters around the world and tools to facilitate response coordination, including media monitoring, map catalogues and Virtual On-Site Operations Coordination Centre.

 

Summary

On 11/23/2011 7:24:31 PM UTC an earthquake of magnitude 6.1 and depth 33.3km has struck an moderately populated area in the Tohoku Province (population: 9.9 million) in Japan. GDACS estimates the likelihood for need of international humanitarian intervention to be low (Green alert).

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

The earthquake 110km from the city of Sendai. The nearest populated places are Mito (146km), Yamagata (138km). It is a mountainous region with a maximum altitude of 1119 m.

Humanitarian Impact tsunami  
Population resilience slope  
Tsunami probability radiation  
Landslide probability poplegend  
Nuclear radiation probability population map  

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: 11/23/2011 11:57:31 PM UTC (4 hours 32 minutes after the event)

Explanation of alert calculation: Show


The impact model combines magnitude (M), population within 100km (P) and vulnerability/resilience ECHO average score (V) using the formula:
alertscore = max(M-4.5,0) * log10(max(P / 80000,0))^ 0.5 * max(V,0.5) ^ 1.5 / 3
The weighted product of magnitude (6.1), population (1845678) and vulnerability (0.5) results in an alertscore of 0.62266888189903
Then alert is Red if alertscore>2, Orange if alertscore>1 and Green if alertscore

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

Earthquake epicentre: best estimate geological map    previous estimates: time

Earthquake Event

Geological map
shakemap

Characteristics for this report

Information source World Data Centre for Seismology, Denver (NEIC)
Link to source event report (usc0006x3y)
PAGER report (c0006x3y)
Magnitude 6.1 M
Depth 33.3 km
Location

Geographic coordinates (latitude/longitude): 37.3735, 141.3868
Japan , Tohoku Province (population: 9984608).
Seismic region: Near The East Coast Of Honshu.

The earthquake happened in Japan , Tohoku Province (population: 9984608). , 110km from the city of Sendai. The nearest populated places are Mito (146km), Yamagata (138km).

It is a mountainous region with a maximum altitude of 1119 m.

Time Temperature chart currently not available. Try to refresh page. 11/23/2011 7:24:31 PM (UTC, Universal Standard Time)
11/24/2011 4:50:04 AM (Estimated local solar time)
Wed, 11/23/2011 20:24 CET (Brussels, Paris, Rome)
Wed, 11/23/2011 14:24 EST (New York, Washington)
Wed, 11/23/2011 11:24 PST (San Francisco, Los Angeles)
Thu, 11/24/2011 03:24 AWST (Australian Western Standard Time)

Previous reports for this earthquake.

Earthquake reportTsunami reportEvent Date/TimeLat/LonMagnitudeDepth (km)SourcePublication Date/TimeDelay
Precipitation chart currently not available. Try to refresh page. 11334111/23/2011 7:24:32 PM UTC37.3736, 141.50995.937.7NEIC (usc0006x3y)11/23/2011 7:44:05 PM UTC19min
Cloud cover chart currently not available. Try to refresh page. 11334311/23/2011 7:24:31 PM UTC37.3735, 141.38686.133.3NEIC (usc0006x3y)11/23/2011 11:57:31 PM UTC272min

Earthquake Impact Details

slopelevel

Potentially affected People

The population in the area of this earthquake if 12 people/km?. (Data source).

The earthquake occurred at 4h local time. At this time a day, more people are at home and therefore more vulnerable to collapsing residential 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
20
50 100773  12 
100 1845678  58 
200 10384040  82 

Damage

The affected region has low level of urban area (0.2%) and a high level of cultivated area (5.7%). In urban areas more damage can be expected than in cultivated or natural areas. (Data source)

Radius (km)urban areascultivated areasother
200 0.29% 5.75% 93.95%
100 0.3% 2.96% 96.72%
50 0% 0.41% 99.58%
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.

Japan has a GDP per capita of 42317 PPP$ (Parity Purchasing Power Dollar, about 1 Euro) and is therefore part of the high level income countries. Therefore, the earthquake happened in an area of high resilience.

Based on the combination of 9 indicators, ECHO attributes Japan a low vulnerability.

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: 37.3735 - long: 141.3868) (Data source).

nuclevel
damlevel
envelope

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

Probability of Secondary effects

ocha Landslides: The maximum slope in the area of the earthquake is 20.708% and the maximum altitude is 1119 m. Since this is a low slope, the risk of earthquake induced landslides is low. 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:

  • ocha Nuclear power plants: There are no nuclear facilities nearby the epicenter.
  • jrc Hydrodams: The following hydrodam installations are near the epicenter: (35km), FUKUSHIMA-DAINI (35km), ONAGAWA (116km), TOKAI (123km)

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 (Sendai) is at 98km from the epicenter. The Military airfield of Fukushima is located at 89km from the epicenter. Other airports are: Ryugasaki South (196km), Ryugasaki (192km), (183km), Hyakuri (159km), Suzumenomiya (170km), Utsunomiya (167km), Otawara (135km), Fukushima (89km), Sendai (98km), Kasuminome (107km), Matsushima (118km), Junmachi (149km), Ojojibara (138km)

Ports nearby are: Choshi (188km), Kashima (174km), Hitachi (119km), Onahama (65km), Soma (66km), Shiogama (112km), Ishinomaki (118km), Onagawa (120km), Kesennuma Ko (169km), Ofunato (191km)

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.

 

Joint Initiative of the United Nations and the European Commission -- globesec Contact us -- Disclaimer
ochaocha jrc

globesec

ipsc Information on this website is collected from scientific and media sources in participation with European Commission Joint Research Centre, UNOSAT and OCHA ReliefWeb.

© European Union, 2004-2011 Reproduction authorised provided the source is acknowledged, except for commercial purposes.

Financially
supported for 2008-2009 by EC MIC
EUROPA - ECHO - Humanitarian Aid Office of the European Commission
...

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