US EditionMagnitude 4.3 Earthquake in San Bernardino County Sends Shaking Across Southern California
SAN BERNARDINO COUNTY, CALIFORNIA, JUL 31 – The quake near Rialto was one of four magnitude 2.5 or greater in the area, part of over 130 quakes since 1990, with no injuries or damage reported, officials said.
- On July 31, 2025, the U.S. Geological Survey reported a magnitude-4.4 quake struck San Bernardino County near Muscoy at 9:32 a.m., felt across Southern California.
- In Southern California's inland fault zones, seismic clusters are common, with about 130 quakes of magnitude 3.0 or greater since 1990, and several smaller earthquakes Thursday morning before and after the largest quake.
- The USGS reported that the main shock was followed by a magnitude-3.1 aftershock about four minutes later, with four quakes of magnitude-2.5 or greater, including 3.0 and 2.8 in the Rialto area.
- Emergency responders reported no injuries or property damage, and online damage reports showed no structural impacts immediately after the quake.
- Despite global seismic unrest, tsunami warnings and evacuations were issued after Tuesday's quake off Russia's Kamchatka Peninsula, yet waves never materialized along the U.S. West Coast.
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Los Angeles (USA), 31 Jul (EFE).- A earthquake of 4.3 magnitude shook the Los Angeles metropolitan area this Thursday morning as part of a seismic swarm of more than a dozen tremors in San Bernardino County, according to the California Institute of Technology (Caltech). The earthquake occurred at 09.32 local time (16.32 GMT) and is the largest reported in the swarm area, where at least 14 tremors have been recorded in the city of Rialto and its …
The earthquake was recorded at 9:32 a.m. about 4 miles northwest of Rialto, San Bernardino County; a series of tremors were recorded in the area
Earthquake in US: Quake of Magnitude 4.4 Rocks Southern California, Tremors Felt in Los Angeles | 🌎 LatestLY
Southern California was rocked by an earthquake today, July 31. According to reports in the Daily Mail UK, a 4.4-magnitude quake on the Richter scale struck the Southern California region in the US, with tremors felt in Los Angeles. The US Geological Survey (USGS) detected the tremor at 9:32 a.m. PT (12:32 p.m. ET), about three miles west of Muscoy in San Bernardino County. 🌎 Earthquake in US: Quake of Magnitude 4.4 Rocks Southern California, T…
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