Nikolski, Alaska – A 4.8 magnitude earthquake struck south of Nikolski Thursday Morning, prompting monitoring.
According to the U.S. Geological Survey (USGS), the quake occurred at 5:38 a.m. UTC on Thursday, Feb. 19. The epicenter was located approximately 107 kilometers south-southwest of Nikolski at a depth of 10 kilometers.
The event was reviewed by the USGS National Earthquake Information Center. A depth of 10 kilometers is considered relatively shallow, which can increase the likelihood of shaking being felt near the epicenter, though no immediate reports of damage or injuries were released.
Nikolski is a small community on Umnak Island in the eastern Aleutian Islands. Due to its remote location, seismic activity in the region is common as the Pacific Plate interacts with the North American Plate along the Aleutian Trench.
The USGS ShakeMap indicated light to weak shaking intensity in the immediate offshore area. No tsunami warning or advisory was issued in connection with this earthquake.
Alaska is the most seismically active state in the U.S., recording thousands of earthquakes annually. Most are too small or too remote to cause significant impact.
Local officials had not announced disruptions to transportation or infrastructure as of Thursday afternoon. Residents in coastal and remote communities are generally advised to review earthquake preparedness plans and monitor official updates following measurable seismic activity.
Earthquakes of this magnitude may be felt lightly in nearby communities and can be of particular interest to fishermen, pilots, and students in remote island regions who rely on consistent transportation and utilities.
Updates will be provided if additional seismic activity is recorded.
This article was produced by a journalist and may include AI-assisted input.
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