Anchorage, Alaska – A major undersea earthquake occurred early this morning off the southern coast of Alaska, prompting tsunami alerts and widespread evacuation efforts across multiple coastal communities. The earthquake, which the U.S. Geological Survey (USGS) measured at a magnitude of 8.2, struck at approximately 2:30 a.m. local time, sparking immediate concern for residents and emergency authorities alike.
According to the USGS, the epicenter of the earthquake was located about 56 miles (91 kilometers) southeast of Perryville, Alaska, at a depth of approximately 29 miles (46 kilometers) beneath the ocean floor. The quake was classified as a megathrust earthquake, a type of seismic activity commonly associated with significant tsunamigenic potential due to the sudden displacement of tectonic plates along subduction zones.
Shortly after the initial quake, several aftershocks were recorded, including a 6.1 magnitude tremor within the same seismic region. The frequency and magnitude of these aftershocks have contributed to the extended tsunami advisory issued across Alaska’s southern coastal zones.
Immediate Tsunami Warnings Issued
In response to the earthquake, the National Tsunami Warning Center (NTWC) quickly issued a tsunami warning for large portions of coastal Alaska, including Kodiak Island, Homer, Sand Point, and Chignik Bay. The warning urged residents in low-lying areas to evacuate immediately to higher ground, emphasizing the potential danger of incoming waves generated by the undersea disturbance.
