TULSA - A minor earthquake has rattled Southern California, shaking buildings in downtown Los Angeles.
The US Geological Survey says the 3.9 magnitude quake struck at 8:24 a.m. Sunday and was centered about 5 miles east-southeast of Santa Clarita, Calif.
Shaking was felt across the Santa Clarita Valley, in downtown Los Angeles and in West Hollywood.
There were no immediate reports of damage or injury.
The quake struck during a weekend of tremors which shook parts of Canada and Oklahoma.
A magnitude-7.7 earthquake struck off the coast of western Canada around 11:14 Saturday, prompting tsunami warnings for several states.
The USGS in Colorado says the Canadian quake hit the Queen Charlotte Islands and was centered 96 miles south of Masset, British Columbia.
Officials say the 7.7 quake was followed by a 5.8-magnitude aftershock several minutes later.
The National Weather Service issued a warning for coastal areas of British Columbia, southern Alaska, Northern California, Oregon and Washington state.
Hawaii Gov. Neil Abercrombie said a tsunami warning that spurred coastal evacuations statewide was downgraded to a tsunami advisory early on Sunday, ending the threat of serious damage.
Abercrombie said that the Aloha State was lucky to avoid more severe surges.
USGS officialsalso reported a small earthquake in central Oklahoma around 11 p.m. Saturday.
The USGS said Sunday that the 3.1 magnitude earthquake was recorded about three miles southwest of Paden in Okfuskee County. The epicenter is about 55 miles east of Oklahoma City.
The Okfuskee County sheriff's office says there have been no reports of injuries or damage.
Geologists say earthquakes of magnitude 2.5 to 3.0 are generally the smallest felt by humans.