M 4.9 in United States on 27 Aug 2012 04:41 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.

Updated: this report is based on episode 1.

Earthquake Magnitude: 4.9M
Depth: 10.2 Km
Lat/Lon: 33.0308 , -115.528
Event Date: 27 Aug 2012 04:41 UTC
26 Aug 2012 21:41 Local
Exposed Population:
1390000 people within 100km
Source: NEIC ci15202921
Inserted at: 27 Aug 2012 04:52 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
ci15202921 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
119051 0.5 27 Aug 2012 04:41 5.1M, 10.2km N/A 1.4 million (in 100km) 00:04 NEIC
119053 0.5 27 Aug 2012 04:41 4.9M, 10.2km N/A 1.4 million (in 100km) 00:11 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 Mexicali, Westmorland, Hovley, and Rockwood.

Radius Population
100 km 1.4 million people
75 km 810000 people
50 km 690000 people
20 km 40000 people
10 km 26000 people
5 km 4600 people
2 km <1000 people

Affected Provinces

Region Province Country Population
California United States 31 million people

Affected populated places

Name Region Province Country City class Population Distance
Hovley California United States Village - 4 km
Rockwood California United States Village - 5 km
Westmorland California United States Village 2100 people 6 km
Mexicali Baja California Mexico Major city 600000 people 42 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
Brawley Municipal BWC -39 Civ. Paved Yes 4400 6 km
Pioneers Memorial Hospital -30 8 km
Calipatria Municipal CLR -55 Civ. Paved No 3400 11 km

Dams

Reservoir Dam Name River Year Distance
Cuyamaca Boulder Creek 1887 96 km

More information

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