M3.1 Earthquake 7 km S of Brawley, CA — July 23, 2026
2026-07-23 07:31:41 UTC (10 hours ago) · approx. 11:31 PM UTC-8 local
On July 23, 2026 at 07:31 UTC, a magnitude 3.1 shallow crustal earthquake struck 7 km S of Brawley, CA, at a depth of 9.9 km and coordinates 32.9150°, -115.5328°.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 607 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 79 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-115.5328°E
Technical Information
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Common Questions
How strong was the magnitude 3.1 earthquake near Brawley, CA?
The magnitude 3.1 earthquake that struck 7 km S of Brawley, CA on July 23, 2026 at 07:31 UTC had a depth of 9.9 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ci40659794). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 23, 2026). M3.1 Earthquake 7 km S of Brawley, CA — July 23, 2026. Retrieved July 23, 2026 from https://www.earthquaketracker.org/earthquakes/event/ci40659794/