3.4

M3.4 Earthquake 19 km SW of Toms Place, CAAugust 14, 2026

2026-08-14 20:38:32 UTC (1 hour ago) · approx. 12:38 PM UTC-8 local

MagnitudeM3.4(ml)
Time20:38 UTC12:38 PM UTC-8
Depth2.7 kmshallow crustal
Coordinates37.451°, -118.843°
Felt by3DYFI responses
StatusAutomatic (preliminary)

On August 14, 2026 at 20:38 UTC, a magnitude 3.4 shallow crustal earthquake struck 19 km SW of Toms Place, CA, at a depth of 2.7 km and coordinates 37.4507°, -118.8428°.

Physical scale: An earthquake of magnitude 3.4 releases seismic energy equivalent to roughly 1.9 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 134 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 37.45°, -118.84°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 3 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 M3.4 earthquake near 19 km SW of Toms Place, CA

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

Earthquake Details

Magnitude
3.4 ml
Depth
2.7 km
shallow crustal
Location
37.4507°N
-118.8428°E
Felt Reports
3
DYFI responses
Community Intensity
3.1
CDI from reports

Technical Information

Event ID
nc75418367
Event Type
earthquake
Status
Automatic
Significance
179
Stations Used
20
Azimuthal Gap
66.0°
RMS Residual
0.12 sec
Last Updated
2026-08-14 21:29:20 UTC

Common Questions

How strong was the magnitude 3.4 earthquake near Toms Place, CA?

The magnitude 3.4 earthquake that struck 19 km SW of Toms Place, CA on August 14, 2026 at 20:38 UTC had a depth of 2.7 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 3.4 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 3.4 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: nc75418367). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, August 14, 2026). M3.4 Earthquake 19 km SW of Toms Place, CAAugust 14, 2026. Retrieved August 14, 2026 from https://www.earthquaketracker.org/earthquakes/event/nc75418367/