M 5.5 in Alaska Peninsula on 27 Jul 2020 19:34 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: 5.5M
Depth: 44.13 Km
Lat/Lon: 55.0965 , -160.4806
Event Date: 27 Jul 2020 19:34 UTC
27 Jul 2020 11:34 Local
Exposed Population: About 800 people within 100km
Source: NEIC us6000b4yh
Inserted at: 27 Jul 2020 19:51 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
us6000b4yh 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
1323622 0 27 Jul 2020 19:34 5.4M, 28km N/A Few people (in 100km) 00:05 NTWC
1323625 0 27 Jul 2020 19:34 5.5M, 44.13km 4.12 N/A (in MMI>=VII) 00:17 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 462) . 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 1323625 55.096/-160.481 5.5 44.1 3.839 27 Jul 2020 19:51 00:17 (new episode)
2 0 1323625 55.096/-160.481 5.5 44.1 3.818 27 Jul 2020 20:00 00:25 (upd of #1)
3 0 1323625 55.096/-160.481 5.5 44.1 4.238 27 Jul 2020 21:39 02:05 (upd of #2)
4 0 1323625 55.096/-160.481 5.5 44.1 4.116 28 Jul 2020 19:39 1d 00:04 (upd of #3)

Affected Provinces

Intensity Region Province Country Population
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 - 10 km
Squaw Harbor Alaska United States Village - 17 km
Village Alaska United States Village - 39 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) Distance
Squaw Harbor unknown 0 16 km
Sand Point SDP 6 Civ. Paved Yes 4000 25 km

Ports

Intensity Name LOCODE Country Distance
Unga Wake Island 9 km
Baralof Bay Wake Island 15 km
Sand Point Wake Island 27 km

More information

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