A 7.0 magnitude earthquake was reported in northern California on Thursday, according to the United States Geological Survey.

A magnitude 7 earthquake shook parts of Humboldt County on Thursday morning, temporarily forcing a tsunami warning that led to evacuations in coastal areas of Northern California and the San Francisco Bay.

The quake occurred on the sparsely populated northern coast of California in a seismically complex area known as the Mendocino Triple Junction. It is where three tectonic plates meet and the Northwest’s Cascadia subduction zone and California’s San Andreas Fault system meet.