M 6.1 in United States on 24 Sep 2021 11:52 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: 39.64 Km
Lat/Lon: 51.1957 , -179.0286
Event Date: 24 Sep 2021 11:52 UTC
24 Sep 2021 02:52 Local
Exposed Population: No people affected in 100km
Source: NEIC us7000fe1w
Inserted at: 24 Sep 2021 12:14 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
us7000fe1w 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
1398440 0 24 Sep 2021 11:52 6.3M, 50km N/A No people affected (in 100km) 0m (at 00:00) 00:08 NTWC
1398444 0 24 Sep 2021 11:52 6.1M, 39.64km 5.23 N/A (in MMI>=VII) 00:21 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. 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 1398444 51.196/-179.029 6.1 39.6 5.226 24 Sep 2021 12:19 00:26 (new episode)
2 0 1398444 51.196/-179.029 6.1 39.6 5.226 24 Sep 2021 12:51 00:59 (upd of #1)
3 0 1398444 51.196/-179.029 6.1 39.6 5.226 24 Sep 2021 13:58 02:05 (upd of #2)
4 0 1398444 51.196/-179.029 6.1 39.6 5.226 25 Sep 2021 11:56 1d 00:04 (upd of #3)

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.

Airports

Intensity Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Amchitka Island AHT 69 0 121 km

Ports

Intensity Name LOCODE Country Distance
Tanaga Island Wake Island 104 km
Constantine Harbour Wake Island 119 km

More information

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