M 4.8 in United States on 07 Apr 2021 19:31 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: 4.8M
Depth: 44.26 Km
Lat/Lon: 52.5229 , -169.1906
Event Date: 07 Apr 2021 19:31 UTC
07 Apr 2021 08:31 Local
Exposed Population:
Few people within 100km
Source: NEIC us6000dztq
Inserted at: 07 Apr 2021 21:05 UTC
INFORM Coping capacity of the alert score
2.2 (United States)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us6000dztq Scaled population (vector) 0.88  
  C1 earthquake 1  
  C2 earthquake 0  
  Country Vulnerability 0  
  INFORM_normalised 0.65  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1369050 0 07 Apr 2021 19:31 4.6M, 12.5km N/A Few people (in 100km) 00:19 ALASKA EC
1369058 0 07 Apr 2021 19:31 4.9M, 43.87km N/A Few people (in 100km) 01:18 NEIC
1369059 0 07 Apr 2021 19:31 4.8M, 44.26km N/A Few people (in 100km) 01:33 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 , State of Alaska (population 572,432) . The nearest places are and Nikolski.

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

Affected Provinces

Region Province Country Population
Alaska United States 570000 people

Affected populated places

Name Region Province Country City class Population Distance
Nikolski Alaska United States Village <1000 people 51 km

see full list

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 52 km

More information

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