A 4.2 magnitude earthquake rocked Southern California Thursday morning, said an NBC Los Angeles report.  

Reports of aftershocks followed later. 

The initial quake was centered in the Pacoima area.

Authorities said the tremor happened at about 4:30 a.m PST.

There were reports of shaking across a widespread part of the San Fernando Valley.

People in Glendale, La Crescenta, downtown Los Angeles, the Miracle Mile area, Hollywood, and Pasadena also felt it.

No damage was reported.

Expect More Aftershocks

USGS seismologist, Susan Hough, said to expect smaller aftershocks in the area.

Hough added that more than 50,000 people reported feeling the shaking on the USGS’ Did You Feel It web page.

A 3.3 aftershock followed a few minutes after the mainshock.

Then, two hours after the mainshock, a 3.9 magnitude aftershock followed.

Authorities added that there were more than 60 aftershocks reported by late morning.

Aftershocks, smaller earthquakes that follow after a mainshock, can continue for hours, days, weeks and even years, said the report.

A Much Stronger Tremor In The Future

Hough warned that there is a chance that there could be an equal or much stronger tremor in the future.

She deduced that there’s roughly a one-in-10 chance of a quake measuring 4.2 or larger occurring over the next month.

Meanwhile, the Los Angeles Fire Department said they have immediately implemented their post-earthquake protocols.

They dispatched fire department vehicles and helicopters to patrol their 470 square-mile jurisdiction.

They had been looking for damage or residents in need of help.

The department said they had completed their protocols at about 5:30 a.m (PST).

Earthquake Elsewhere

U.S. Geological Survey reported that there was also an earthquake in the Pacific nation of Tonga.

The agency measured a 5.7 magnitude earthquake 67 kilometers from Neiafu, Tonga, at 3:16 a.m GMT, on July 31st.

Moreover, they also registered a 5.8 magnitude tremor 338 kilometers away from Hachijo, Tokyo, Japan on July 30th, at about 8:35 a.m. local time.

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