Tsunami warning for Northern California, Oregon canceled

The Humboldt County Sheriff's Office initially warned residents to evacuate the area before the alert was rescinded. However, the agency did warn people in the area to be prepared for aftershocks. 

The warning was canceled about 1.5 hours after the earthquake. 

The earthquake struck about 10:45 a.m. in the city of Petrolia, roughly 50 miles from Eureka. 

"If you are located in this coastal area, move inland to higher ground," the National Weather Service warning read.

The NWS initially warned of powerful waves that could impact coastal areas. The warning forced the San Francisco Zoo to close. 

"Guests have been evacuated, animals secured and staff have moved to higher ground," it said on social media. 

The city's emergency management agency warned people to stay out of the water and away from beaches, harbors, marina docks, and piers and move at least one block inland. 

No tsunami warning was issued for San Luis Obispo, Santa Barbara, Ventura or Los Angeles counties, but the areas were still being evaluated for potential tsunami impacts, the state Office of Emergency Management said. 

Despite the cancelation of the warning, authorities recommended everyone to stay away from coastal areas because of rising tides.