M 5.9 in United States on 29 Jul 2021 06:23 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: 5.9M
Depth: 5.3 Km
Lat/Lon: 55.4078 , -157.3392
Event Date: 29 Jul 2021 06:23 UTC
28 Jul 2021 20:23 Local
Exposed Population: No people affected in MMI IV
No people within 100km
Source: ALASKA EC ak0219nekhhk
Inserted at: 29 Jul 2021 08:10 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
ak0219nekhhk Scaled population (raster) 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
1387982 0 29 Jul 2021 06:23 6.2M, 42.2km 3.78 less than 100 (in MMI>=VII) 0m (at 00:00) 00:32 ALASKA EC
1388017 0 29 Jul 2021 06:23 5.9M, 5.3km 3.44 less than 100 (in MMI>=VII) 01:47 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
no people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1387982 55.216/-157.295 6.2 43.5 3.782 29 Jul 2021 06:46 00:23 (new episode)
2 0 1387982 55.23/-157.293 6.2 42.2 3.674 29 Jul 2021 06:47 00:23 (upd of #1)
3 0 1388017 55.408/-157.339 5.9 5.3 3.444 29 Jul 2021 08:14 01:50 (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.