A string of earthquakes rattled the Pacific Coast of the United States and Mexico on Sunday, including a magnitude 6.9 quake that could be felt across Baja California, Arizona and southern California, the U.S. Geological Survey reported.

That quake, centered about 175 kilometers (110 miles) east-southeast of Tijuana, was the largest of at least four that struck from the Mexican desert to the northern California wine country, according to the USGS. There was no immediate report of damage or injuries from the quakes in Los Angeles or San Diego, according to authorities in those cities.

"We felt it for about 30 seconds. It was rolling," San Diego County Sheriff's Lt. Scott Ybarrondo told CNN. "Nothing fell off the walls here, but we have reports of pictures falling off walls elsewhere in the county."

The northernmost quake report came from near Santa Rosa, California, north of San Francisco. That magnitude 4.1 temblor struck about nine minutes after the Baja California quake and about 500 miles further north.

Chandeliers swung and water sloshed around in swimming pools in the Los Angeles suburbs, witnesses reported, while posters to the Web site Twitter reported feeling the quake in Phoenix, Arizona.

The Los Angeles Fire Department received a few reports of people being trapped in elevators after the Baja California quake, department Capt. Steve Ruda said.