USGS is reporting significant seismic activity in California this morning with more than 100 earthquakes being reported across northern California.
The largest of the bunch is a magnitude 7.0 event which struck west-northwest of Petrolia, California on the northern coast of the state. Also of note is a significant swarm of earthquakes striking just south of Clear Lake and north of San Francisco, where 77 earthquakes there alone struck within the last 24 hours.
Hundreds of people across California and Oregon have already reported to USGS they felt the strong off-shore earthquake.
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