M 4.7 in United States on 12 Aug 2018 21:47 UTC
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: 4.7M
Depth: 8.3 Km
Lat/Lon: 69.6563 , -144.1952
Event Date: 12 Aug 2018 21:47 UTC
12 Aug 2018 13:47 Local
Exposed Population: About 200 people within 100km
Source: ALASKA EC ak20084610
Inserted at: 12 Aug 2018 22:25 UTC
INFORM Coping capacity of the alert score: 2.2 (United States)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)
GDACS score
ALASKA EC 0 0
ak20084610 Scaled population (vector) 0  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 0.65  
Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.


Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1223718 0 12 Aug 2018 21:47 4.6M, 10km N/A Few people (in 100km) 00:15 NEIC
1223724 0 12 Aug 2018 21:47 4.5M, 2.9km N/A Few people (in 100km) 00:29 ALASKA EC
1223725 0 12 Aug 2018 21:47 4.6M, 0.6km N/A Few people (in 100km) 00:30 ALASKA EC
1223726 0 12 Aug 2018 21:47 4.6M, 5km N/A Few people (in 100km) 00:33 ALASKA EC
1223727 0 12 Aug 2018 21:47 4.6M, 8.8km N/A Few people (in 100km) 00:34 ALASKA EC
1223729 0 12 Aug 2018 21:47 4.7M, 8.3km 4.53 N/A (in MMI>=VII) 00:37 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 ,of Alaska. The alertlevel for this event is GREEN

Intensity Population
no people
<1000 people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1223729 0/0 N/A N/A N/A 12 Aug 2018 23:15 01:28 (new episode)

Affected Provinces

Intensity Region Province Country Population
Alaska United States no people
Alaska United States no people


Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

More information

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