PASADENA, Calif. -- Three small earthquakes struck northern Imperial County Monday morning. the U.S. Geological Survey reported.
The first was a 3.2-magnitude temblor that hit at 6:14 a.m. at a depth of around 3.7 miles, its epicenter 11 miles west-northwest of Niland, south of the Riverside County boundary, according to a computer-generated USGS statement.
The second measured 3.0 and struck at 7:33 a.m. at a depth of around 8.6 miles, 13 miles west-northwest of Niland, according to a second computer-generated USGS statement. The third had a magnitude of 3.1 and came at 8:48 a.m., its epicenter 10 mile west-northwest of Niland, the USGS reported, again on the basis of a computer-generated report.