A powerful 7.3-magnitude earthquake struck off the coast of Alaska on Wednesday, prompting immediate tsunami warnings for South Alaska and the Alaska Peninsula, according to the US Geological Survey (USGS).
The quake occurred at approximately 12:37 PM local time (2037 GMT), with its epicentre located about 54 miles (87 kilometres) south of Sand Point. The tremor originated at a shallow depth of 20.1 kilometres, intensifying its potential impact.
The National Tsunami Warning Centre (NTWC) in Palmer, Alaska, confirmed the tsunami threat, stating, “A tsunami has been confirmed and some impacts are expected.” The warning covers coastal areas from Kennedy Entrance (40 miles southwest of Homer) to Unimak Pass (80 miles northeast of Unalaska).
No tsunami alerts were issued for regions beyond the immediate zone, and authorities continue to monitor the situation closely.
Alaska, situated along the seismically volatile Pacific Ring of Fire, has a history of powerful earthquakes. The 1964 Great Alaska Earthquake, measuring 9.2 in magnitude, remains the strongest recorded in North American history, causing widespread devastation and triggering tsunamis across the Pacific.
In July 2023, a 7.2-magnitude quake struck the Alaska Peninsula, though it resulted in no major damage. Wednesday’s tremor, however, has raised fresh concerns about seismic preparedness and coastal safety.
Emergency services are on high alert, and residents in affected zones have been advised to follow official guidance and remain vigilant.
