LOS ANGELES — A pair of modest earthquakes rattled Southern California on Saturday morning, with epicenters in Ontario. The earthquakes, of magnitudes 3.5 and 3.9, occurred within about a half hour of each other. Shaking was felt as far away as the city of Los Angeles, Orange County and northern San Diego County, according to crowdsourcing reports sent to the U.S. Geological Survey. “Light” …
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