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Three M3 Quakes Rattle Inland Empire May 8

5/9/2026

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Summary

Story summary

Three magnitude-3 earthquakes struck the Inland Empire of Southern California within a single day on May 8.
The U.S. Geological Survey recorded a 3.1-magnitude quake near Loma Linda at 5:53 a.m. with 264 felt reports and a shallow three-mile depth, and later that night logged a Muscoy tremor at eight-mile depth that drew 105 reports.
Officials reminded residents to drop, cover and hold on, warning of possible aftershocks and utility hazards.

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Story summary

Three magnitude-3 earthquakes struck the Inland Empire of Southern California within a single day on May 8.
The U.S. Geological Survey recorded a 3.1-magnitude quake near Loma Linda at 5:53 a.m. with 264 felt reports and a shallow three-mile depth, and later that night logged a Muscoy tremor at eight-mile depth that drew 105 reports.
Officials reminded residents to drop, cover and hold on, warning of possible aftershocks and utility hazards.