An earthquake originating in Mexicali was felt in Yuma Saturday afternoon. According to the United States Geological Survey (USGS), the 4.9 magnitude earthquake began at 3:55 p.m.
The USGS said the quake originated at an estimated depth of 6.2 miles below the earth's surface. An aftershock of magnitude 2.7 occurred at the same location at 4:16 p.m. "It was close to Mexicali, so we expect to see minor damage in that area, but it was not very serious," said Richard Buckmaster, a geophysicist with USGS. "It was fairly shallow, and the closer it is to the surface the more likely it is for people to feel more intense shaking. Think of the earth as insulation. The larger the distance between the earthquake and the surface of the earth the better, because most of the shock is absorbed by the time it gets to the surface."
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