A small earthquake shook parts of the Inland Empire Sunday night, and residents from across the region reported hearing loud booming sounds before feeling the small rumble.
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A preliminary magnitude-3.1 earthquake struck about 3 miles southeast of Rancho Cucamonga about 10:59 p.m., according to the US Geological Survey.
"(The quake) sounded like a train coming, and then a quick shake," NBC4 viewer Kristin Chapman said. "The sound of it scared me more."
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Residents reported feeling the quake across the Inland Empire, including in Alta Loma, Azusa, Chino, Eastvale, Fontana and Riverside.
"It was loud, and I thought it was thunder," NBC4 viewer Tere Nelson said. "Then the rumble, and I knew it was a quake."
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Other viewers described the quake as making their home feel like "it was on rollers" and making a "big popping sound" in their house.
"(We) definitely heard before we felt (it)," viewer Simone Pascual said via Facebook.
