M 4.7 in United States on 28 Sep 2014 20:45 UTC

Hazard models

EQ parameters
Shakemap
Tsunami

Event summary

This is a preliminary assessment. The final GDACS Alert Level has been/will be published using more detailed information.

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

Earthquake Magnitude: 4.7M
Depth: 7 Km
Lat/Lon: 36.578 , -120.808
Event Date: 28 Sep 2014 20:45 UTC
28 Sep 2014 13:45 Local
Exposed Population:
1675871 people within 100km
Source: USGS at00ncmpnd
Inserted at: 28 Sep 2014 20:50 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
USGS 0.1 n.a
at00ncmpnd 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
1061230 n.a 28 Sep 2014 20:45 4.7M, 7km N/A 1.7 million (in 100km) 00:05 USGS
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 Fresno, and Panoche.

Radius Population
100 km 1.7 million people
75 km 320000 people
50 km 64000 people
20 km <1000 people
10 km <1000 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
Panoche California United States Village - 3 km
Fresno California United States Major city 430000 people 95 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
Pinnacles Ranch 366 30 km
Eagle Field 47 38 km

Ports

Name LOCODE Country Distance
Moss Landing USMJN Wake Island 91 km
Moss USMJN Wake Island 91 km
Manchester USMNY Wake Island 95 km

Dams

Reservoir Dam Name River Year Distance
Hernandez San Benito River 1962 20 km

More information

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