International Disaster and Emergency Monitoring Center

Preliminary earthquake data and analysis


Earthquake Report
Base data
Event ID 1583744
Event time 2026-02-27 05:17:54 (UTC)
Local time 2026-02-27 15:17:54 - [It was afternoon in the affected area.]
Last update 2026-02-27 05:30:55 (UTC)
Magnitude 4.9
Depth 54.52 km
Class Light
Hypocenter Shallow depth
Mercalli scale 5
Possible effects Almost everyone feels movement. Sleeping people are awakened. Doors swing open or close. Dishes are broken. Pictures on the wall move. Small objects move or are turned over. Trees might shake. Liquids might spill out of open containers.
Data status reviewed
Data provider USGS

Location
Continent North-America
Country USA
Administration area Alaska
Nearest settlement Atka
Distance 70 km
Course SW
Surface type underwater quake
Tsunami region North Pacific
Water surface name Bering Sea



Risk Analisys
Nearest nuclear power plants
There is no known nuclear power plant nearby.
Nearest marine ports
Palisades Point (74,83 km), Palisades Point (74,83 km), Adak Naval Air Station (120,24 km), Adak Naval Air Station (120,24 km)
Nearest airports
Atka Airport (71,95 km), Atka Airport (71,95 km), Adak Airport (121,25 km), Adak Airport (121,25 km)
Nearest volcanoes
Sergief volcano (34,91 km), Koniuji volcano (55,90 km), Kasatochi volcano (64,20 km), Atka volcano (84,30 km), Korovin volcano (87,62 km)
Quick Analysis
According to the epicenter of the quake, this is an underwater quake.