(KRON) — An earthquake that struck Humboldt County in Northern California was felt in the Bay Area Thursday morning. The quake was a preliminary magnitude of 6.6, according to the United States Geological Survey. However, the USGS later confirmed the magnitude as 7.0.

The National Weather Service issued a tsunami warning as a result of the quake that was later lifted.

The strong quake struck at 10:44 a.m. KRON4 viewers around the Bay Area, including in San Francisco, Oakland and Alameda, all reported feeling the quake.

The epicenter was about 42 miles west-southwest of Ferndale and 54 miles west-southwest of Eureka.

Tsunami warning lifted

The tsunami warning was issued for coastal regions from California to Oregon. Anyone near coastal waters was advised to move to high ground immediately, according to several Bay Area law enforcement agencies.

As of 11:50 a.m., the tsunami threat was over, according to the U.S. Tsunami Warning System. During the duration of the warning, some five million people were under a tsunami warning.

According to the California Governor’s Office of Emergency Services, the tsunami warning included the coastal areas of California and Oregon from Davenport, which is just north of Santa Cruz, to Douglas/Lane Line, Oregon.

“Tsunami warnings mean that a tsunami with significant inundation is expected or occurring,” the OES said. “Warnings indicate that widespread dangerous coastal flooding accompanied by powerful currents are possible and may continue for several hours after the initial wave arrival.”

The National Weather Service Bay Area said it is “still waiting for magnitudes of water rise.”

BART disrupted

The Bay Area Rapid Transit District announced that BART service in the Transbay Tube was halted in all directions in response to the quake.

The transit system later restored normal service, telling KRON4, “We have received word the warning has been cancelled and as a result we are in the process of restoring normal service.”

California Gov. Gavin Newsom has been briefed on the earthquakes and resulting tsunami warning, according to the governor’s office. Newsom is in a meeting with state emergency officials.

Evacuations ordered

The San Francisco Department of Emergency Management is advising people to stay out of water, move away from beaches, harbors, marina docks, and piers and to move at least 1 block inland.

The San Francisco Zoo was closed, and guests are being evacuated. Animals at the zoo have been secured and staff have moved to higher ground.

Evacuations are in effect as a result of the quake. In Pacifica, Vallemar Elementary School at 377 Reina Del Mar was evacuated.

The City of Berkeley issued and later lifted evacuations for West Berkeley for the following areas:

Berkeley Waterfront

Tom Bates Fields

West Frontage Road

I80 Freeway

Aquatic Park

Harrison, Gilman, Camelia, and Page West of 5th Street

Jones, Cedar, Virginia, and Delaware, West of 6th Street

Hearst, West of 5th Street

University and Addison, West of 4th Street

All areas West of 3rd Street

Potter and Folger, West of 7th Street

As of shortly after 12 p.m., Berkeley lifted all evacuation orders.

The Pacifica School District is also evacuating schools due to the tsunami warning issued by the NWS. IBL has been evacuated to Oceana High School and Ocean Shore is being evacuated to Sunset Ridge School. Cabrillo is evacuating to the upper deck on campus.

“Please come and pick up your children as soon as possible,” the school district said.

There are no preliminary reports of damage or injuries as a result of the quake.

This is a developing story. Check back for updates.