M 4.6 in Central Alaska on 21 Jul 2015 03:08 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: 51.6 Km
Lat/Lon: 62.3452 , -149.7283
Event Date: 21 Jul 2015 03:08 UTC
20 Jul 2015 19:08 Local
Exposed Population:
About 81136 people within 100km
Source: ALASKA EC
Inserted at: 21 Jul 2015 03:27 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
ALASKA EC 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
1089050 0 21 Jul 2015 03:08 4.5M, 47km N/A 80 thousand (in 100km) 00:09 NTWC    
1089051 0 21 Jul 2015 03:08 4.6M, 51.6km 3.42 80 thousand (in 100km) 00:18 ALASKA EC
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 Anchorage.

Radius Population
100 km 82000 people
75 km 6900 people
50 km 3500 people
20 km <1000 people
10 km no 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
Anchorage Alaska United States Major city 260000 people 125 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
Talkeetna TKA 109 Civ. Paved Yes 3500 23 km
Montana Creek 76 35 km
Secluded Lake 91 36 km

Ports

Name LOCODE Country Distance
Palmer Wake Island 90 km

More information

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