Northern California residents could feel aftershocks as high as magnitude 6.0 for months following Thursday morning's magnitude 7.0 earthquake that hit offshore in Eureka, California.

The earth continues to shake off the coast of Northern California days after a 7.0 quake rocked the area, with the latest temblor registering a 4.2 magnitude early Tuesday.

According to the US Geological Survey, the quake struck around 10:44 a.m., west of Petrolia, California in the Pacific Ocean. A Tsunami Warning has been issued for 45 miles southwest of Eureka. The earthquake was first preliminarily registered as having a magnitude of 6.6, but USGS updated it a 7.0.