The quake struck at 12:10 PST (20:10 GMT), approximately 38 kilometers west of the northern Californian community of Petrolia.
— EMSC (@LastQuake) December 20, 2021
The earthquake was centered in the Pacific Ocean, according to reports, and state emergency services say they are monitoring any potential “secondary impacts.”
Weather services have warned that the quake has not made enough of an impact to issue any official tsunami warnings.
We just had a 5.5 #earthquake off the coast of Fortuna, California. It's about 30 miles away from us here in Eureka. There was a very strong initial wave and then a very weak second wave which I actually didn't feel. No damage. No tsunamis. But we are all awake now.
— Permanent Suspension (#7) (@PermSusLucky7) December 20, 2021
Witnesses have flocked to social media to describe the impact they felt, with many saying it was enough to wake them up.
Yes! I'm up in Klamath and whole room and building shook for a few seconds. Quite a surprise. #Earthquake
— Caspar Donnison (@CasparDonnison) December 20, 2021
— James Kicklighter (@jameskick) December 20, 2021
Others heard ‘earthquake’ and ‘California’ and assumed for a moment it could be the massive quake across from San Andreas Fault that meteorologists have been warning about for years. This overdue earthquake, often referred to as ‘The Big One’ by Californians, could measure at least 7.8 in magnitude and cause massive destruction for the state.
I slept through it. This is what happens when you live in California for a long enough, particularly Northern California.and then sometimes every little tremor you get the millisecond fleeting thought: is this the Big One? https://t.co/vKqPhle1wi
— Annie Anxiety || Support the #CBWU ♍️ (@fangirlsmash) December 20, 2021
— cesar (@jebaiting) December 20, 2021