00:24 Mexico Earthquake Makes Waves in Pool A powerful earthquake in southern Mexico Tuesday turned a swimming pool into a wave pool in Mexico City.

<img class="styles__noscript__2rw2y" src="https://dsx.weather.com//util/image/w/20160106-california-quake-revised.jpg?v=at&w=485&h=273&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0" srcset="https://dsx.weather.com//util/image/w/20160106-california-quake-revised.jpg?v=at&w=485&h=273&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0 400w, https://dsx.weather.com//util/image/w/20160106-california-quake-revised.jpg?v=ap&w=980&h=551&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0 800w" > Banning, California Earthquake The red circle outlines the epicenter of the earthquake that struck southern California Wednesday morning, Jan. 6, 2016.

A shallow 4.5-magnitude earthquake shook inland sections of Southern California Wednesday morning. Landslides were reported in the area near the epicenter, which had been soaked by heavy rainfall Tuesday.

According to the U.S. Geological Survey, the quake struck at 6:42 a.m. PST just north of Banning, a city of 30,000 in the San Gorgonio Pass along Interstate 10 between San Bernardino and Palm Springs.

The quake was shallow, occurring 10.4 miles (16.7 kilometers) below the ground. The USGS originally estimated the focal depth as an even shallower 1 mile (1.6 km). Shallow earthquakes generally produce stronger ground shaking near the epicenter than do deeper earthquakes of the same magnitude.

According to incident reports on the California Highway Patrol's website, landslides were reported just minutes after the earthquake along State Highway 243 just south of Banning. Mud and small rocks were strewn across sections of the roadway about 7 miles from the earthquake's epicenter.

Another CHP report indicated a tree and large boulders across the roadway on State Highway 74 near the mountain community of Pinyon Pines, about 15 miles south of Palm Springs. That incident was about 40 miles southeast of the epicenter.

Rain was not falling at the time of the landslides, but 1.5 to 3 inches of rain had fallen on the area during the 24 hours preceding the earthquake.

KNBC-TV in Los Angeles said there were no reports of structural damage from first responders in Riverside and San Bernardino counties, the two counties most directly affected by the quake.

The USGS website's "Did You Feel It?" received about 6,000 reports of ground shaking from users across Southern California. The strongest shaking was reported near the epicenter in Banning and Cabazon, California, where the intensity was estimated at level V (five), or moderate, on the 12-point Mercalli scale.

Lighter shaking was reported in a broad zone from Los Angeles on the west to Twentynine Palms on the east, and from the Victor Valley on the north to the San Diego area on the south. In all, the USGS estimated about 10 million people may have been able to feel the earthquake.

The USGS interactive map showed the quake's epicenter close to the Banning Fault, a branch of the San Andreas Fault system that runs northwest to southeast along much of the length of California.

The same region was rattled just eight days ago by a magnitude-4.4 tremor and series of smaller aftershocks originating near Devore, about 35 miles northwest of Wednesday's quake epicenter.

This is a breaking news story. Stay with weather.com and The Weather Channel smartphone app for updates.

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