M 4.71 in United States on 20 Jan 2015 13:21 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: 4.7M
Depth: 9.87 Km
Lat/Lon: 36.4338341 , -120.9708328
Event Date: 20 Jan 2015 13:21 UTC
20 Jan 2015 05:21 Local
Exposed Population:
974459 people within 100km
Source: NEIC
Inserted at: 20 Jan 2015 13:27 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
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
1069953 0.1 20 Jan 2015 13:21 4.9M, 14km N/A 820 thousand (in 100km) 00:03 USGS
1069954 0 20 Jan 2015 13:21 4.71M, 9.87km N/A 970 thousand (in 100km) 00:05 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 Fresno, and Bitterwater.

Radius Population
100 km 820000 people
75 km 360000 people
50 km 56000 people
20 km 24000 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
Bitterwater California United States Village - 6 km
Fresno California United States Major city 430000 people 124 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
Metz 73 12 km
Mesa del Rey KIC 113 Civ. Paved No 4400 15 km
Pinnacles Ranch 366 19 km

Ports

Name LOCODE Country Distance
Manchester USMNY Wake Island 78 km
Moss Landing USMJN Wake Island 83 km
Moss USMJN Wake Island 83 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.