International Disaster and Emergency Monitoring Center

Preliminary earthquake data and analysis

Earthquake Report
Base data
Event ID 1774367
Event time 2026-10-18 06:51:57 (UTC)
Local time 2026-10-18 14:51:57 - [It was afternoon in the affected area.]
Last update 2026-10-18 07:44:30 (UTC)
Magnitude 2.7
Depth 79.8 km
Class Micro
Hypocenter Medium deep
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 Nanwalek
Distance 46 km
Course W
Surface type underwater quake
Tsunami region North Pacific
Water surface name Gulf of Alaska

Overview map
Green circle [feel the Eq] 10 km, Orange circle 25 km, Yellow circle 75 km

Population map
Green circle [feel the seism activity] 10 km, Orange circle 25 km, Yellow circle 75 km

Risk Analisys
Nearest nuclear power plants
There is no known nuclear power plant nearby.
Nearest marine ports
Port Graham (51,75 km), Port Graham (51,75 km), Seldovia (56,27 km), Seldovia (56,27 km)
Nearest airports
Nanwalek Airport (45,60 km), Nanwalek Airport (45,60 km), Port Graham Airport (50,90 km), Port Graham Airport (50,90 km), Dog Fish Bay Airport (51,20 km)
Nearest volcanoes
Augustine volcano (40,43 km), Iliamna volcano (73,61 km)
Quick Analysis
Due to the small magnitude of the earthquake and the deep depth of the hypocenter, no damage is conceivable.According to the epicenter of the quake, this is an underwater quake.