M 6.2 in United States on 29 Jul 2021 06:23 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: 6.2M
Depth: 42.2 Km
Lat/Lon: 55.2297 , -157.2933
Event Date: 29 Jul 2021 06:23 UTC
28 Jul 2021 20:23 Local
Exposed Population: No people within 100km
Source: ALASKA EC ak0219nekhhk
Inserted at: 29 Jul 2021 06:55 UTC
INFORM Coping capacity of the alert score: 1.1 (United States)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
ALASKA EC 0 0 0
ak0219nekhhk Scaled population (raster) 0 Max wave alert 0m  
  C1 shakemap -0.59 Max wave realtime 0m  
  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 N/A (in MMI>=VII) 0m (at 00:00) 00:32 ALASKA EC
1388017 0 29 Jul 2021 06:23 5.9M, 5.3km 3.44 N/A (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 United States ,of Alaska. 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

Intensity Region Province Country Population
Alaska United States no people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Mitrofania Alaska United States Village - 108 km

see full list


Critical infrastructure

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

Ports

Intensity Name LOCODE Country Distance
Chirikof Island Wake Island 123 km

More information

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