3.5-magnitude quake shakes L.A. County

Los Angeles County — particularly the Pasadena and Alhambra areas — was rattled by an earthquake Sunday morning.

The preliminary 3.5-magnitude quake struck four kilometers south-southwest of South Pasadena just before 10 a.m., the USGS said.

The quake struck at a depth of 11.3 kilometers.

Seismologist Dr. Lucy Jones, who was in South Pasadena at the time, posted on X that the quake was “sharp and short.”

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“The focal mechanism shows east-west thrust faulting, much like the 1987 Whittier Narrows quake,” Dr. Jones said. “[Sunday’s] quake is west of that event.”

According to KTLA Director of Content and Coverage Peter Wilgoren, the temblor felt like someone “took a tuning fork to the entire house.”

No injuries or damage were immediately reported.

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