A small earthquake provided a wake-up jolt to residents in a mountain community north of Los Angeles early Friday.
The 5:42 a.m. quake was centered 1.5 miles (2.3 kilometers) northwest of Castaic and had a preliminary magnitude of 3.7, the U.S. Geological Survey said.
Several hundred people contributing to the USGS’ citizen reporting website characterized the quake as weak or light.
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