International Disaster and Emergency Monitoring Center

Preliminary earthquake data and analysis


Earthquake Report
Base data
Event ID 1401221
Event time 2025-07-03 22:57:23 (UTC)
Local time 2025-07-04 06:57:23 - [It was morning in the affected area.]
Last update 2025-07-03 23:49:53 (UTC)
Magnitude 3.4
Depth 44.9 km
Class Minor
Hypocenter Shallow depth
Mercalli scale 1
Possible effects People do not feel any Earth movement.
Data status reviewed
Data provider USGS

Location
Continent North-America
Country USA
Administration area Alaska
Nearest settlement Halibut Cove
Distance 114 km
Course SSE
Surface type underwater quake
Tsunami region North Pacific
Water surface name Gulf of Alaska



Risk Analisys
Nearest nuclear power plants
There is no known nuclear power plant nearby.
Nearest marine ports
There is no known marine port nearby.
Nearest airports
There is no known marine port nearby.
Nearest volcanoes
There is no known volcanoes nearby.
Quick Analysis
According to the epicenter of the quake, this is an underwater quake.