M 7.6 in United States on 19 Oct 2020 20:54 UTC

Event summary

This earthquake can have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

GDACS ID EQ 1239964
Earthquake Magnitude: 7.6M
Depth: 33.25 Km
Lat/Lon: 54.6079 , -159.6552
Event Date: 19 Oct 2020 20:54 UTC
19 Oct 2020 12:54 Local
Exposed Population: Less then 100 people in MMI VII
About 800 people within 100km
Inserted at: 20 Oct 2020 18:00 UTC
INFORM Coping capacity:
2.2 (United States)
Maximum Wave Height observed: 0.762 m

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 0.3 0.2 0.3
us6000c9hg Scaled population (raster) 2.11 Max wave alert 0.25m  
  C1 shakemap -0.59 Max wave realtime 0.25m  
  C2 shakemap 0.53      
  Country Vulnerability 0      
  INFORM_normalised 0.65      
Maximum expected impact using different data sources.
Virtual OSOCC
Meteo assessment
Satellite products
Analytical products
USA - Earthquake (ECHO 20 Oct 2020)Tue, 20 Oct 2020 13:05

  • An earthquake of magnitude 7.5 M at a depth of 40 km occurred offshore in the north-east Pacific Ocean, close to the southern coast of central Aleutian Islands (Alaska) on 19 October at 20.54 UTC. The epicentre was located approximately 90 km south-east of Sand Point City (Aleutians East Borough).
  • USGS PAGER estimates that up to 2,000 people were exposed to strong shaking. Several aftershocks with magnitude up to 5.6 M have been registered.
  • The U.S. National Tsunami Warning Center issued a Tsunami Advisory  for the coastal areas of South Alaska and the Alaska Peninsula and then cancelled on 20 October. The earthquake triggered a tsunami, according to the sea level measurements, which indicated a wave up to 0.76 m in Chignik Bay and  0.70 m in Sand Point (Alaska).
  • According to media reports, there were no reports of casualties or damages in the area but some people living in the Sand Point area have been evacuated.
Detailed event map. European Union, 2024. Map produced by EC-JRC.
The boundaries and the names shown on this map do not imply official endorsement or acceptance by the European Union.

Updates on volcanic activity (Smithsonian)

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Estimated casualties (PAGER)

USGS estimates the number of casualties for each earthquake for the Prompt Assessment of Global Earthquakes for Response (PAGER) product.
The graph shows the current fatalities estimate.

Exposed population

Data, images, links, services and documents

For this events, GDACS has links to information from the following sources: EC-JRC (91), (5), NEIC (6), OCHA (1), INGV (1), WMO (2), USGS (5), INFORM (4), NOAA (1),