Tsunami alaska earthquake today. Cnn an earthquake with a magnitude of 78 struck off southern alaskas coast late tuesday shaking the alaska peninsula and briefly sparking tsunami concerns before officials said no destructive. Usgs a magnitude 78 earthquake off the southwestern tip of alaska prompted a tsunami warning for some communities early wednesday which has since ended. A powerful earthquake off alaskas southern coast has jolted coastal communities and forced residents to briefly scramble for higher ground over fears of a tsunami.
After an aleutian earthquake prompted a tsunami warning tuesday night residents across coastal alaska from homer to unalaska woke to the sounds of sirens and phone warnings and many quickly left. A powerful 78 magnitude earthquake off the coast of the alaska peninsula in the southwestern part of the state on tuesday night triggered tsunami warnings that were later canceled. Tuesday about 75 miles south of chignik at a depth of about 17 miles and was reportedly felt as far away as anchorage according to the us.
The quake hit roughly 100 kilometres. The earthquake occurred at 1012 pm. Geological survey map shows where a magnitude 78 earthquake hit alaska at 1012 pm.