M 7.4 in United States from 19 Oct 2020 20:54 UTC to 20:54

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: 7.4M
Depth: 41 Km
Lat/Lon: 54.665 , -159.608
Event Date: 19 Oct 2020 20:54 UTC
19 Oct 2020 12:54 Local
Exposed Population: About 800 people within 100km
Source: PTWC pt20293005
Inserted at: 19 Oct 2020 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 Tsunami GDACS score
PTWC 0 0.2 0.2
pt20293005 Scaled population (vector) 1.91 Max wave alert 0.26m  
  C1 earthquake 1 Max wave realtime 0.26m  
  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
1338485 0.2 19 Oct 2020 20:54 7.4M, 41km N/A Few people (in 100km) 0.3m (at 02:16) 00:06 NTWC
1338489 0.2 19 Oct 2020 20:54 7.4M, 41km N/A Few people (in 100km) 0.3m (at 02:16) 00:10 PTWC
1338491 0.3 19 Oct 2020 20:54 7.5M, 40.12km 8.16 less than 100 (in MMI>=VII) 0.4m (at 00:54) 02:07 NEIC
1338751 0.3 19 Oct 2020 20:54 7.6M, 33.25km 7.19 879 (in MMI>=VII) 0.3m (at 00:43) 21:06 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) .

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

Region Province Country Population
Alaska United States 570000 people

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
Squaw Harbor unknown 0 88 km
Sand Point SDP 6 Civ. Paved Yes 4000 93 km

Ports

Name LOCODE Country Distance
Unga Wake Island 81 km
Baralof Bay Wake Island 86 km
Sand Point Wake Island 96 km

More information

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