3.1

M3.1 Earthquake 7 km S of Brawley, CAJuly 23, 2026

2026-07-23 07:14:20 UTC (33 min ago) · approx. 11:14 PM UTC-8 local

MagnitudeM3.1(ml)
Time07:14 UTC11:14 PM UTC-8
Depth10.5 kmshallow crustal
Coordinates32.915°, -115.533°
Felt by6DYFI responses
StatusAutomatic (preliminary)

On July 23, 2026 at 07:14 UTC, a magnitude 3.1 shallow crustal earthquake struck 7 km S of Brawley, CA, at a depth of 10.5 km and coordinates 32.9145°, -115.5327°.

Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 673 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 83 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 32.91°, -115.53°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 6 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M3.1 earthquake near 7 km S of Brawley, CA

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
3.1 ml
Depth
10.5 km
shallow crustal
Location
32.9145°N
-115.5327°E
Felt Reports
6
DYFI responses
Community Intensity
3.1
CDI from reports

Technical Information

Event ID
ci40659722
Event Type
earthquake
Status
Automatic
Significance
150
Stations Used
65
Azimuthal Gap
37.0°
Min Station Distance
0.027°
RMS Residual
0.40 sec
Last Updated
2026-07-23 07:46:42 UTC

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 07:14 UTC had a depth of 10.5 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.

Understanding This Data

Magnitude 3.1 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: ci40659722). 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, CAJuly 23, 2026. Retrieved July 23, 2026 from https://www.earthquaketracker.org/earthquakes/event/ci40659722/