M 5.7 in United States on 21 Nov 2018 18:21 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: 5.7M
Depth: 145.5 Km
Lat/Lon: 59.9732 , -153.3083
Event Date: 21 Nov 2018 18:21 UTC
21 Nov 2018 09:21 Local
Exposed Population: About 4000 people within 100km
Source: ALASKA EC ak20386247
Inserted at: 21 Nov 2018 18:34 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
ALASKA EC 0 0
ak20386247 Scaled population (vector) 0  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  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
1237865 0 21 Nov 2018 18:21 5.4M, 151.1km N/A 4 thousand (in 100km) 00:04 ALASKA EC
1237866 0 21 Nov 2018 18:21 5.7M, 131.7km N/A 4 thousand (in 100km) 00:06 ALASKA EC
1237869 0 21 Nov 2018 18:21 5.8M, 117.9km N/A 4 thousand (in 100km) 00:11 ALASKA EC
1237870 0 21 Nov 2018 18:21 5.7M, 145.5km 3.88 N/A (in MMI>=VII) 00:13 ALASKA EC
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 Iniskin, Williamsport, Pile Bay Village, Pedro Bay, Port Alsworth, and Kijik.

Radius Population
100 km 4400 people
75 km <1000 people
50 km <1000 people
20 km <1000 people
10 km <1000 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
Iniskin Alaska United States Village - 26 km
Williamsport Alaska United States Village - 37 km
Pile Bay Village Alaska United States Village - 40 km
Pedro Bay Alaska United States Village <1000 people 50 km
Port Alsworth Alaska United States Village <1000 people 62 km
Kijik Alaska United States Village - 63 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
Camp Point 2 0 21 km
Pedro Bay PDB 14 0 50 km
Port Alsworth PTA 85 0 61 km
Anchor River Airpark 37 0 84 km
Nondalton NNL 94 0 86 km
Iliamna ILI 57 Civ. Unpaved Yes 5000 93 km
Drift River DRF 9 0 93 km
Ninilchik NIN 84 0 96 km

Ports

Name LOCODE Country Distance
Snug Harbor Wake Island 43 km
Drift River Wake Island 90 km
Ninilchik Wake Island 91 km

More information

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