M 5.1 in United States on 18 Sep 2012 01:44 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: 5.1M
Depth: 38.6 Km
Lat/Lon: 56.9366 , -154.142
Event Date: 18 Sep 2012 01:44 UTC
17 Sep 2012 17:44 Local
Exposed Population:
About 400 people within 100km
Source: NEIC ak10561248
Inserted at: 20 Sep 2012 18:02 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
ak10561248 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
119687 0.5 18 Sep 2012 01:44 5.2M, 43km N/A Few people (in 100km) 00:05 NEIC
119688 0.5 18 Sep 2012 01:44 5.5M, 52.5km N/A Few people (in 100km) 00:15 NEIC
119701 0.5 18 Sep 2012 01:44 5.5M, 48.1km N/A Few people (in 100km) 14:27 NEIC
119727 0.5 18 Sep 2012 01:44 5.1M, 41.3km N/A Few people (in 100km) 1d 23:19 NEIC
119743 0.5 18 Sep 2012 01:44 5.1M, 38.6km N/A Few people (in 100km) 2d 16:17 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 Alaska (population 572,432) . The nearest places are and Akhiok.

Radius Population
100 km <1000 people
75 km <1000 people
50 km <1000 people
20 km <1000 people
10 km <1000 people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Alaska United States 570000 people

Affected populated places

Name Region Province Country City class Population Distance
Akhiok Alaska United States Village <1000 people 10 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
Akhiok AKK 13 9 km
Alitak ALZ unknown 10 km
Moser Bay KMY unknown 17 km

Ports

Name LOCODE Country Distance
Lazy Bay Wake Island 11 km
Trap Point Wake Island 13 km

More information

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