Jon Baird

4.4 Magnitude San Gabriel Valley Earthquake Prompts Fears of 'Big One'

August 29, 2018 - 8:38 am

(CBS News/KNX 1070) - The magnitude-4.4 earthquake struck north of La Verne, but no injuries or damage were immediately reported.

The earthquake was the largest in Southern California since March 28, 2014 when a 5.1-magnitude earthquake struck in La Habra.

KNX reporter Jon Baird:

Experts says whenever we have a quake like tha there is always a fairly good chance, about a five percent chance, of it being a foreshock to a much bigger quake. Seismologist Doctor Lucy Jones says the prototype earthquake warning system being developed seemed to work well last night.

A 4.4 magnitude earthquake struck Southern California around 7:33 p.m. local time Tuesday night, according to the U.S. Geological Survey (USGS). There were no immediate reports of injuries or damage.

The quake was centered about three miles north of La Verne, California, in the San Gabriel Valley. The epicenter is located about 25 miles east of downtown Los Angeles.

USGS says a 3.4 quake followed a minute later.

The Associated Press reports that the main temblor was widely felt as either a sharp jolt near the epicenter or a rolling motion further away. It shook buildings for several seconds in downtown Los Angeles.

The earthquake was reported to be felt some 40 miles away in Sylmar to the northwest and 30 miles south in Huntington Beach.

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