M 5.5 in United States from 31 Aug 2017 17:46 UTC to 17:46

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: 5.5M
Depth: 62 Km
Lat/Lon: 58.4327 , -153.6285
Event Date: 31 Aug 2017 17:46 UTC
31 Aug 2017 09:46 Local
Exposed Population: Few people within 100km
Source: ALASKA EC ak16749110
Inserted at: 31 Aug 2017 17:49 UTC
INFORM Coping capacity of the alert score
2.2 (United States)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
ALASKA EC 0 0
ak16749110 Scaled population (vector) 0  
  C1 earthquake 1  
  C2 earthquake 0  
  Country Vulnerability 0  
  INFORM_normalised 1  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1179036 0 31 Aug 2017 17:46 5.5M, 62km N/A Few people (in 100km) 00:03 ALASKA EC
1179037 0 31 Aug 2017 17:46 5.4M, 63.7km N/A Few people (in 100km) 00:05 ALASKA EC
1179038 0 31 Aug 2017 17:46 5.7M, 66.5km N/A Few people (in 100km) 00:07 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 Port Wakefield, Aleneva, and Port Bailey.

Radius Population
100 km <1000 people
75 km <1000 people
50 km no people
20 km no 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
Port Wakefield Alaska United States Village - 54 km
Aleneva Alaska United States Village <1000 people 59 km
Port Bailey Alaska United States Village - 66 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
Onion Bay ONN unknown 0 52 km
Uganik UGI unknown 0 61 km
Port Bailey KPY unknown 0 66 km
Pleasant Harbor PTR unknown 0 71 km
West Point Village KWP unknown 0 73 km
San Juan / Uganik WSJ unknown 0 80 km
Zachar Bay KZB unknown 0 98 km

Ports

Name LOCODE Country Distance
Port Vita Wake Island 53 km
Dry Spruce Bay Wake Island 66 km
Port Obrien Wake Island 80 km
Uyak Wake Island 92 km

More information

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