Millions across Los Angeles County were shaken by a strong 4.6 magnitude earthquake Feb. 9 centered northwest of the upscale coastal community of Malibu.

The quake struck at 1:47 p.m. at a depth of 8 miles, according to the U.S. Geological Survey (USGS).

The temblor was followed by several smaller aftershocks but did not trigger a tsunami warning, the National Weather Service reported on tsunami.gov.

There were no immediate reports of damage or injuries.

The quake was felt from San Diego to Bakersfield, according to the USGS. Aftershocks could be felt in the immediate area, from nearly 1.7 to 3.0 in Los Angeles County.

The USGS also warned of a 1-in-20 chance for a larger quake over the next few days, reminding the public to “be prepared.”

The Los Angeles Fire Department reported that the quake was “widely felt” and posted a notice on social media asking residents to prepare for aftershocks and to check their homes for damage. The department also suggested checking on pets and at-risk neighbors.

Los Angeles Mayor Karen Bass urged residents to use caution and stay ready after the earthquake. City teams were continuing to assess for damages and monitoring the situation, according to the mayor.

Metro trains were slowed following the quake to allow for crews to check equipment for damage.