Strong 7.8 magnitude quake strikes off Alaska coast No Comments Uncategorized An earthquake with a preliminary magnitude of 7.8 struck off the coast of Alaska early Wednesday morning. An earthquake with a preliminary magnitude of 7.8 struck off the coast of Alaska early Wednesday morning. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to print (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on WhatsApp (Opens in new window)