How an early earthquake warning works
A magnitude 5.7 earthquake was recorded Friday afternoon in the Pacific Ocean, about 135 miles west of Ferndale, on a day when a series of quakes struck in the Pacific, the U.S. Geological Survey reports.
The earthquake was reported at 12:50 p.m., nearly three hours after a 3.3-magnitude quake was reported in the Pacific Ocean, about 49 miles west of Ferndale, according to the USGS. About 40 minutes prior to the 3.3-magnitude quake, a 3.1-magnitude earthquake struck in the Pacific, about 155 miles west of Ferndale.
According to the Los Angeles Times, the larger temblor occurred at a depth of 2.5 miles, the USGS said.
Three additional quakes were reported later, one of magnitude 3.1 about 1:30 p.m., a magnitude 2.6 at about 3 p.m., and a magnitude 3.9 about 4:20 p.m., according to the USGS. That made for a total of six temblors recorded in the same general area off the coast of California.
Neither the Eureka nor Fortuna police departments reported that they felt anything or received reports of damage, the Times reported.