M 6.1 in Alaska Peninsula on 28 Jul 2020 08:03 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: 6.1M
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: Less then 100 people in MMI V
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 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
1323695 0 28 Jul 2020 08:03 5.9M, 60km N/A 2 thousand (in 100km) 00:06 NTWC
1323699 0 28 Jul 2020 08:03 6.1M, 41.26km 4.68 N/A (in MMI>=VII) 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 2) . 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 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 <1000 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.