![Seismogram being recorded by a seismograph at the Weston Observatory in Massachusetts, USA.. Photo by Z22 [CC BY-SA 3.0], via Wikimedia Commons.](https://i0.wp.com/mynewsla-newspack.newspackstaging.com/wp-content/uploads/2015/03/Seismogram-earthquake-quake.jpg?ssl=1)
A 4-magnitude earthquake rattled portions of San Bernardino County Monday, the U.S. Geological Survey reported.
The temblor struck at 2:21 a.m. at a depth of 1.2 miles, its epicenter 34 miles south-southwest of Baker and 43 miles east of Barstow, according to a USGS computer-generated report.
—Staff and wire reports