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0 of 3 Premium Clicks used this month SUBSCRIBE Print + Online Subscriber Activation | Register x Forgot Password | Need an Account? e-edition | subscribe | newsletter | deals Classifieds Jobs Autos Real Estate FEATURED » NEWS NOW Medford man accidentally shoots himself while showing gun to 7-Eleven clerk ... October days break heat records in Medford ... Another wolf makes its way into Southern Oregon ... Medford man accidentally shoots himself while showing gun to 7-Eleven clerk ... October days break heat records in Medford ... Another wolf makes its way into Southern Oregon ... PACIFIC RIM Five earthquakes, up to 5.9 magnitude, hit off Oregon coast No tsunami warnings issued Comment By Tim Fought The Associated Press MailTribune.com By Tim Fought The Associated Press Posted Jun. 1, 2015 at 9:44 AM Updated Jun 1, 2015 at 5:27 PM By Tim Fought The Associated Press Posted Jun. 1, 2015 at 9:44 AM Updated Jun 1, 2015 at 5:27 PM » Social News SALEM — Five earthquakes ranging in magnitude up to 5.9 have struck off the coast of the Pacific Northwest, but they weren't strong enough to generate tsunamis, scientists said. The earthquakes were shallow, at 6 miles deep, often a signal of a dangerous quake. It usually takes an earthquake of magnitude 7 or better to trigger a tsunami, said geophysicist Paul Caruso of the U.S. Geological Survey. The quakes were clustered in an area about 300 miles west of Coos Bay, Oregon, along what's known as the Blanco Fracture Zone. "It's a well-known place for earthquakes," said another agency geophysicist, Julie Dutton. "They're frequent throughout the year." A 2008 agency report said the zone had produced about 70 of magnitude 5 or greater in the previous 28 years, as many as eight some years. In 2008, scientists detected a swarm of hundreds of smaller quakes. In the Blanco faults, blocks of crust slide horizontally past one other, Dutton said. Faults that feature blocks rising and falling violently in relation to each other are the kind that can generate the energy for tsunamis, she said. The first of the five earthquakes came a few minutes before midnight Sunday, at magnitude 5.8. The fifth, at magnitude 5.9, came shortly after 1 p.m. Monday. The weakest was magnitude 4.3. Reports to the geology agency and law enforcement offices suggest that people along the coast barely felt the earthquakes. By Tim Fought The Associated Press MailTribune.com By Tim Fought The Associated Press Posted Jun. 1, 2015 at 9:44 AM Updated Jun 1, 2015 at 5:27 PM » Comment or view comments Reader Reaction » STAY INFORMED Email NewsLetter Sign Up Today Sign up for our newsletter and have the top headlines from your community delivered right to your inbox. Southern Oregon Directory Featured Businesses Loading... Business Name address Location, ST | website.com Find Southern Oregon Attractions Bars Restaurants Beauty Salons Entertainment Doctors Medical Specialists Contractors Education Lawn Services Lawyers Shopping Travel Tanning Used Cars Wedding Services ▼ Add your business here + Events Calendar Connect with MailTribune.com Facebook Twitter RSS Back to top Reader Services Reader Services Home Subscriptions Subscriber controls Contact us Submissions Photos Events Letters to the editor Corrections Announcements Obituaries Story ideas Since you asked Alerts Email Alerts RSS Feeds Text Alerts Advertise Media Kit Home Products and services Ad rates Advertising contacts Propel Marketing Mail Tribune Daily Tidings The Nickel Shop Our Valley Blogs Mobile Site Stay Informed Email newsletter Sign Up Today Sign up for our newsletter and have the top headlines from your community delivered right to your inbox. Your privacy is important, read our privacy policy. © Copyright 2015 Local Media Group, Inc. All Rights Reserved. Privacy Policy | Terms of Service | Local Media Group Publications Original content available for non-commercial use under a Creative Commons license, except where noted. MailTribune.com | P.O. Box 1108, Medford, OR 97501