( Fox )
A magnitude 7.0 earthquake off the coast of Northern California has prompted a rare tsunami warning for coastal areas near the California-Oregon state line, including San Francisco Bay.
A powerful 7.0 earthquake was recorded around 10:44 a.m. PT about 60 miles offshore of Ferndale, California, according to the U.S. Geological Survey. The USGS originally reported a magnitude 5.8 quake struck Cobb, California 3 minutes after the 7.0 quake but have since updated their data to reduce that quake to a magnitude 2.5.
The USGS does expect more aftershocks. Those aftershocks should decrease in intensity and frequency overtime.
The major quake promoted a Tsunami Warning from Davenport to 10 miles south of Florence, Oregon. The warning includes more than 4.6 million people and will remain in place until further notice.
"If you are located in this coastal area, move inland to higher ground," the National Weather Service warning read.
A Tsunami Warning means that a tsunami with significant inundation is possible or is already occurring.
A tsunami is a series of long waves caused by significant disruptions in the ocean, most commonly earthquakes along tectonic plate boundaries.
‘You are in danger': Evacuations ordered for coastal areas
Shaking from the major earthquake was felt in Napa Valley and across San Francisco.
Officials in West Berkley issued evacuation orders for the tsunami zone west of 7th Street.
Emergency management in San Francisco warned residents, "You are in danger. Get away from coastal waters."
Bay Area Rapid Transportation (BART) closed Transbay Tube service to and from San Francisco after the earthquake.
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