M 4.6 in United States on 02 Aug 2004 21:31 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: 4.6M
Depth: 44.3 Km
Lat/Lon: 52.26 , 174.11
Event Date: 02 Aug 2004 21:31 UTC
03 Aug 2004 09:31 Local
Exposed Population:
about 200 people within 100km
Source: NEIC
Inserted at: 05 Aug 2004 00:10 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
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
7583 0.5 02 Aug 2004 21:31 4.6M, 44.3km N/A Few people (in 100km) 2d 02:39 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) .

Radius Population
100 km <1000 people
75 km <1000 people
50 km 47000 people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Country Region Province Population
United States Alaska 570000 people

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
Shemya AFB SYA 30 Mil. Paved Yes 10000 53 km
Casco Cove Cgs ATU 12 91 km

Ports

Name LOCODE Country Distance
Agattu Island Wake Island 46 km
Alcan Harbor Wake Island 55 km

More information

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