A 6.4-magnitude earthquake struck off the coast of northern California in the United States early Tuesday.
The relatively shallow quake hit 25 miles (40 kilometers) southwest of the port city of Eureka, in Humboldt county, the US Geological Survey said, reports AFP.
The National Tsunami Warning Center said a tsunami was not expected.
In a preliminary assessment, the USGS said there was a low likelihood of casualties but some damage was possible.
Power supplies appeared to have been hit, with nearly 60,000 people without electricity in Humboldt County.
"Power is out across the county. Do not call 911 unless you are experiencing an immediate emergency," Humboldt Country Office of Emergency Services tweeted.
Around a dozen small aftershocks were reported in the area, USGS said.
California is regularly shaken by tremors and seismologists say a quake capable of causing widespread destruction is almost certain to hit the state in the next 30 years.
Bd-pratidin English/Golam Rosul
