M 6.1 in Alaska Peninsula on 28 Jul 2020 08:03 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: 6.1M
Depth: 41.26 Km
Lat/Lon: 54.8674 , -161.1436
Event Date: 28 Jul 2020 08:03 UTC
27 Jul 2020 21:03 Local
Exposed Population: About 2000 people in MMI>=IV
About 2000 people within 100km
Source: NEIC us6000b56k
Inserted at: 28 Jul 2020 08:22 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
NEIC 0 0
us6000b56k 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
1323695 0 28 Jul 2020 08:03 5.9M, 60km N/A 2 thousand 00:06 NTWC
1323699 0 28 Jul 2020 08:03 6.1M, 41.26km 4.68 2 thousand 00:18 NEIC
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 (population 572,432) . 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 1323699 54.867/-161.144 6.1 41.3 4.508 28 Jul 2020 08:22 00:18 (new episode)
2 0 1323699 54.867/-161.144 6.1 41.3 4.384 28 Jul 2020 08:32 00:28 (upd of #1)
3 0 1323699 54.867/-161.144 6.1 41.3 4.622 28 Jul 2020 10:07 02:04 (upd of #2)
4 0 1323699 54.867/-161.144 6.1 41.3 4.676 29 Jul 2020 08:07 1d 00:04 (upd of #3)

Affected Provinces

Intensity Region Province Country Population
Alaska United States no people
Alaska United States <1000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Unga Alaska United States Village - 54 km
Squaw Harbor Alaska United States Village - 57 km

see full list


Critical infrastructure

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

Airports

Intensity Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft)
Squaw Harbor unknown 0

Ports

Intensity Name LOCODE Country
Unga Wake Island
Baralof Bay Wake Island
Belkofski Wake Island

More information

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