A minor earthquake with magnitude 3.11 (ml/mb) was detected on Thursday, 5 kilometers (3 miles) from Rialto in CA. The earthquake was roughly at a depth of 6.15 km (4 miles). Global time and date of event 31/07/25 / 2025-07-31 16:36:50 / July 31, 2025 @ 4:36 pm UTC/GMT. The 3.11-magnitude earthquake has occurred at 16:36:50 / 4:36 pm (local time epicenter). Event ids that are associated to the earthquake: ci41249512. Id of event: ci41249512. Exact location of event, longitude -117.4121704 West, latitude 34.1408348 North, depth = 6.15 km.
Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Dana Point, Compton, Signal Hill. Epicenter of the earthquake was 77 km (48 miles) from Los Angeles (c. 3 792 600 pop), 57 km (36 miles) from Anaheim (c. 336 300 pop), 61 km (38 miles) from Santa Ana (c. 324 500 pop), 21 km (13 miles) from Riverside (c. 303 900 pop), 65 km (40 miles) from Irvine (c. 212 400 pop). Country/countries that might be effected, United States (c. 310 233 000 pop).
In the past 24 hours, there have been three, in the last 10 days seven, in the past 30 days seven and in the last 365 days thirty-nine earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 130,000 minor earthquakes in the world. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.
Did you feel the quake?
How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 5 km NW of Rialto, CA.
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