M 5.5 in Fox Islands, Aleutian Islands on 21 Nov 2022 15:09 UTC

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: 5.5M
Depth: 1 Km
Lat/Lon: 52.3364 , -168.0685
Event Date: 21 Nov 2022 15:09 UTC
21 Nov 2022 04:09 Local
Exposed Population: Few people affected in MMI -
Source: ALASKA EC ak022exqnaft
Inserted at: 21 Nov 2022 15:31 UTC
INFORM Coping capacity of the alert score
1.1 ()

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
ALASKA EC 0 0
ak022exqnaft 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.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1474408 0 21 Nov 2022 15:09 5.4M, 17km 3.08 N/A (in MMI>=VII) 00:05 NTWC
1474413 0 21 Nov 2022 15:09 5M, 25.2km 3.13 N/A (in MMI>=VII) 00:15 ALASKA EC
1474414 0 21 Nov 2022 15:09 5.5M, 13.412km 3.55 Few people (in 100km) 00:21 NEIC
1474415 0 21 Nov 2022 15:09 5.5M, 1km 3.33 N/A (in MMI>=VII) 00:21 ALASKA EC
1474416 0 21 Nov 2022 15:09 5.5M, 21.526km 3.47 N/A (in MMI>=VII) 00:26 NEIC
1474433 0 21 Nov 2022 15:09 5.5M, 19.404km 3.41 N/A (in MMI>=VII) 02:13 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 off shore.

Radius Population
100 km <1000 people
75 km no people
50 km no people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Critical infrastructure

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

Airports

Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Nikolski AS IKO 22 0 86 km

More information

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