M 5.4 in United States from 21 Sep 2023 01:13 UTC to 01:14

Hazard models

Rapid Impact
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: 5.4M
Depth: 32 Km
Lat/Lon: 54.974 , -160.369
Event Date: 21 Sep 2023 01:14 UTC
20 Sep 2023 17:14 Local
Exposed Population: Few people affected in MMI&>=III
Source: NTWC at00s1ba3c
Inserted at: 21 Sep 2023 01:20 UTC
INFORM Coping capacity of the alert score: 2.2 (United States)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Rapid Impact)		 GDACS score
NTWC 0 0
at00s1ba3c Scaled population (raster) 0  
  C1 rapid impact 0  
  C2 rapid impact 0  
  Country Vulnerability 0  
  INFORM_normalised 0  
Maximum expected impact using different data sources.

The green area correspond to areas affected by strong shaking (MMI VI or higher) according to the simulation.


Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1526442 0 21 Sep 2023 01:14 5.4M, 32km 3.85 N/A (in MMI>=VII) N/A 00:06 NTWC
1526445 0 21 Sep 2023 01:13 5.5M, 24.3km 3.88 N/A (in MMI>=VII) N/A 00:11 ALASKA EC
1526446 0 21 Sep 2023 01:13 5.4M, 50.6km 4.12 N/A (in MMI>=VII) N/A 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.

Rapid Impact

The results presented below are calculated with the ShakeMap open source software (USGS) using only earthquake hypocenter information to provide a rapid estimation of the ground motion and shaking intensity without taking into account any instrumental observations or earthquake source scaling laws.

Exposed population

The earthquake happened in United States ,of Alaska. The alertlevel for this event is GREEN

Intensity Population
no people

Affected Provinces

Intensity Region Province Country Population
Alaska United States no 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.