M 5.7 in United States from 08 Apr 2021 17:10 UTC to 17:10

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: 5.7M
Depth: 77.7 Km
Lat/Lon: 63.2075 , -148.5817
Event Date: 08 Apr 2021 17:10 UTC
08 Apr 2021 09:10 Local
Exposed Population: About 1000 people within 100km
Source: ALASKA EC ak0214icukav
Inserted at: 08 Apr 2021 17:22 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
ak0214icukav Scaled population (raster) 0  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 1  
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
1369187 0 08 Apr 2021 17:10 5.9M, 59.4km N/A 1 thousand (in 100km) 00:06 ALASKA EC
1369188 0 08 Apr 2021 17:10 5.9M, 1km N/A 1 thousand (in 100km) 00:07 ALASKA EC
1369190 0 08 Apr 2021 17:10 5.9M, 73km N/A 1 thousand (in 100km) 00:10 ALASKA EC
1369193 0 08 Apr 2021 17:10 5.7M, 77.7km 4.17 N/A (in MMI>=VII) 00:12 ALASKA EC
1369195 0 08 Apr 2021 17:10 5.5M, 77.7km 3.96 N/A (in MMI>=VII) 00:41 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 unknowed a zone. The alertlevel for this event is GREEN

Intensity Population
<1000 people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1369193 63.184/-148.536 5.9 59.4 5.112 08 Apr 2021 17:20 00:09 (new episode)
2 0 1369193 63.189/-148.548 5.9 73.0412 4.32 08 Apr 2021 17:21 00:11 (upd of #1)
3 0 1369193 63.208/-148.582 5.74 77.6794 4.17 08 Apr 2021 17:29 00:18 (upd of #2)
4 0 1369195 63.208/-148.582 5.5 77.6794 3.96 08 Apr 2021 19:54 02:44 (new episode)

Affected Provinces



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.