M 6.1 in United States on 24 Aug 2014 10:20 UTC

Hazard models

EQ parameters
Shakemap
Tsunami

Event summary

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude: 6.1M
Depth: 9 Km
Lat/Lon: 38.151 , -122.334
Event Date: 24 Aug 2014 10:20 UTC
24 Aug 2014 03:20 Local
Exposed Population: 7987803 people within 100km
Source: USGS at00nat3ek
Inserted at: 24 Aug 2014 10:25 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
USGS 0.9 0.9
at00nat3ek Scaled population (vector) n.a  
  C1 earthquake n.a  
  C2 earthquake n.a  
  Country Vulnerability n.a  
  INFORM_normalised n.a  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1058569 0.9 24 Aug 2014 10:20 6.1M, 9km N/A 8 million (in 100km) 00:04 USGS
1058570 0.7 24 Aug 2014 10:20 5.7M, 10.8km N/A 7.7 million (in 100km) 00:04 USGS
1058572 0.9 24 Aug 2014 10:20 6M, 10.8km N/A 7.7 million (in 100km) 00:09 NEIC
1058573 0.9 24 Aug 2014 10:20 6.1M, 10.75km N/A 7.7 million (in 100km) 00:54 NEIC
The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.
The episode that has the last updated information.
* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Exposed population

The earthquake happened in United States , State of California (population 30,971,320) . The nearest places are San Francisco, and Guadalcanal Village.

Radius Population
100 km 8 million people
75 km 5 million people
50 km 3.3 million people
20 km 360000 people
10 km 73000 people
5 km <1000 people
2 km no people

Affected Provinces

Region Province Country Population
California United States 31 million people

Affected populated places

Name Region Province Country City class Population Distance
Guadalcanal Village California United States Village - 5 km
San Francisco California United States Major city 780000 people 45 km

see full list

Critical infrastructure

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

Airports

Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Napa County APC 10 Civ. Paved Yes 5900 8 km
Vallejo VLO unknown 10 km
Sonoma Valley 3 13 km
Sonoma Skypark 6 15 km
Hamilton AAF 1 18 km
Garibaldi Brothers 6 19 km
Gnoss Field NOT Civ. Paved Yes 3300 20 km

Ports

Name LOCODE Country Distance
Vallejo USVLO Wake Island 10 km
Pinole Point Wake Island 16 km
Benicia USBNC Wake Island 19 km

Dams

Reservoir Dam Name River Year Distance
San Pablo San Pablo Creek 1920 24 km
Briones Bear Creek 1964 28 km
Lake Curry Gordon Valley Creek 1926 29 km

More information

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