Thousands along the West Coast were rattled by multiple strong earthquakes, triggering alerts from emergency officials.

A 5.7 earthquake rattled the seafloor about 100 miles off Pistol River on the coast of Oregon around 4 a.m. on Wednesday. The quake originated at a depth of about 6 miles and was part of a cluster that also included a 5.

EARTHQUAKE WARNINGS FOR TWO MAJOR STATES THREE QUAKES OFF WEST COAST DETECTED NEAR EUREKA POSSIBLE AFTERSHOCKS NO RISK OF TSUNAMI 60% CHANCE OF ANOTHER TREMOR PLATES CAPABLE OF 9.0 MAGNITUDE COULD CAU

A magnitude-5.7 quake off Oregon led a cluster of tremors that renewed attention on one of North America's most dangerous fault systems.