Overall Green alert Volcanic eruption for Great Sitkin
in United States

Event summary

Volcanic eruption Great Sitkin is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Name: Great Sitkin
Lat/Lon: 52.076 , -176.13
Event Date: 26 May 2021 UTC
Exposed Population 30km: No people affected
Exposed Population 100km: About 200 people within 100km
Max Volc. Explosivity Index VEI: 2
Population exposure index: 1
Inserted at: 26 May 2021 06:47 UTC


For more info on GDACS alert score click here.

Historical Timeline

Volcano Timeline

IDGDACS alert colorDateSource
1 26 May 2021 00:00 ANCHORAGE

Exposed population

The eruption happened in United States , State of Alaska (population 572,432) . The nearest places are and Adak Station.

Radius Population
100 km <1000 people
75 km <1000 people
50 km no people
30 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
Adak Station Alaska United States Village 9200 people 44 km

see full list

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.


Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Adak Naf ADK 5 Mil. Paved Yes 7700 42 km


Name LOCODE Country Distance
Adak Wake Island 42 km


Nuclear plants

More information

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