There was a whole lot of shaking going on at the southern end of the two fault lines that run parallel with the Oregon Coast early Thursday & Friday, March 4 & 5. According to the U.S. Geological Survey, a 3.0-quake was measured west of Trinidad, CA, another 3.0 northwest of Ferndale, CA, and a 2.9 west of Petrolia, CA, all near Cape Mendocino in Northern California.