The National Tsunami Warning Center responded to a tsunami event following a M7.8 aftershock on Thursday, Sep 18, 2025. A tsunami advisory was posted for the Western Aleutian Islands in Alaska. A tsunami wave was detected and confirmed on deep water pressure sensors (DART buoys) and measured in Amchitka, Alaska, along the coast. Following procedures and a modeled and measured low risk beyond the alerted area, the tsunami advisory was canceled. For more information, head to tsunami.gov. US NWS Pa

Tsunami warning issued for parts of Alaska after earthquake off coast