US: 6.4-magnitude offshore earthquake strikes off the coast of northern California Dec. 20

Event

A magnitude-6.4 earthquake occurred off the coast of northern California at around 02:34 Dec. 20. The epicenter was about 12 km (8 miles) west-southwest of Ferndale. The temblor has not triggered a tsunami warning.

This is a developing situation; additional information will be issued as warranted.

Advice

Plan accordingly for aftershocks. Consider vacating multistory buildings if operating in affected areas until authorities confirm their structural integrity. Allow additional time for air and road travel, as aftershocks may prompt brief disruptions. Seek updated information on road conditions before driving in hilly areas in the affected region due to potential landslides.