M 5.6 in United States on 09 Aug 2020 14:58 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: 5.6M
Depth: 37.4 Km
Lat/Lon: 55.9851 , -158.8266
Event Date: 09 Aug 2020 14:58 UTC
09 Aug 2020 06:58 Local
Exposed Population: About 500 people within 100km
Source: ALASKA EC ak020a7dzfzp
Inserted at: 09 Aug 2020 16:02 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
ALASKA EC 0 0
ak020a7dzfzp Scaled population (vector) 3  
  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
1325726 0 09 Aug 2020 14:57 5.4M, 32km N/A No people affected (in 100km) 00:05 NTWC
1325729 0 09 Aug 2020 14:57 5.1M, 25.42km N/A No people affected (in 100km) 00:18 NEIC
1325733 0 09 Aug 2020 14:57 5.2M, 32.6km 3.34 N/A (in MMI>=VII) 00:30 ALASKA EC
1325735 0 09 Aug 2020 14:58 5.7M, 37.4km N/A Few people (in 100km) 00:57 ALASKA EC
1325736 0 09 Aug 2020 14:58 5.6M, 37.4km N/A Few people (in 100km) 01:04 ALASKA EC
1325738 0 09 Aug 2020 14:57 5.6M, 5km N/A Few people (in 100km) 01:12 ALASKA EC
1325740 0 09 Aug 2020 14:58 5.7M, 48.4km N/A No people affected (in 100km) 01:37 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 Mitrofania, Perryville, Chignik Lake, Ivanof Bay, Chignik, and Chignik Lagoon.

Radius Population
100 km <1000 people
75 km <1000 people
50 km <1000 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
Mitrofania Alaska United States Village - 7 km
Perryville Alaska United States Village <1000 people 21 km
Chignik Lake Alaska United States Village <1000 people 31 km
Ivanof Bay Alaska United States Village <1000 people 41 km
Chignik Alaska United States Village <1000 people 42 km
Chignik Lagoon Alaska United States Village <1000 people 45 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
Perryville 7 0 22 km
Chignik Lake 15 0 31 km
Chignik Lagoon KCL 15 0 41 km
Ivanof Bay KIB unknown 0 42 km
Chignik Bay KBW unknown 0 43 km
Chignik Fisheries KCG 8 0 46 km
Johnsons Landing 40 0 90 km

Ports

Name LOCODE Country Distance
Perryville USPYX Wake Island 21 km
Chignik Wake Island 43 km
Ivanof Bay Wake Island 44 km
Port Heiden Wake Island 100 km

More information

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