A magnitude 6.4 quake struck about 7.5 miles (12 kilometers) west-southwest of Ferndale, Calif., in Humboldt County, according to the US Geological Survey. At least two people were injured, according to the Sheriff’s Office.
The National Oceanic and Atmospheric Administration said there is currently no tsunami threat associated with the quake.
However, the Humboldt County Sheriff’s Office (HCSO) warned residents to be prepared for aftershocks.
“Due to a major earthquake, widespread damage to roads and homes is being reported throughout Humboldt County. Be prepared for aftershocks. Check gas and water lines for damage or leaks. Be careful if you travel,” the HCSO tweeted.
More than 55% of customers are without power in Humboldt County, California, after the quake.
According to poweroutage.us, 55,176 customers had lost power as of 3:15 am Pacific Time.
Electricity provider Pacific Gas & Electric advised customers to avoid turning on gas without a clear sign that they have a leak, evacuate if a gas line may be broken and check for downed or damaged power lines.