2.8

M2.8 Earthquake 8km NNE of Walker, CAAugust 17, 2022

2022-08-17 17:05:10 UTC (2022-08-17) · approx. 9:05 AM UTC-8 local

MagnitudeM2.8(md)
Time17:05 UTC9:05 AM UTC-8
Depth3.8 kmshallow crustal
Coordinates38.589°, -119.459°
Felt by1DYFI response
Status✓ Reviewed by USGS

On August 17, 2022 at 17:05 UTC, a magnitude 2.8 shallow crustal earthquake struck 8km NNE of Walker, CA, at a depth of 3.8 km and coordinates 38.5888°, -119.4588°.

Physical scale: An earthquake of magnitude 2.8 releases seismic energy equivalent to roughly 265 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 54 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 38.59°, -119.46°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 1 citizen response 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 M2.8 earthquake near 8km NNE of Walker, CA

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

Earthquake Details

Magnitude
2.8 md
Depth
3.8 km
shallow crustal
Location
38.5888°N
-119.4588°E
Felt Reports
1
DYFI responses
Community Intensity
2.2
CDI from reports

Technical Information

Event ID
nc73769110
Event Type
earthquake
Status
✓ Reviewed
Significance
123
Stations Used
20
Azimuthal Gap
56.0°
Min Station Distance
0.048°
RMS Residual
0.10 sec
Last Updated
2022-10-28 02:26:47 UTC

Common Questions

How strong was the magnitude 2.8 earthquake near Walker, CA?

The magnitude 2.8 earthquake that struck 8km NNE of Walker, CA on August 17, 2022 at 17:05 UTC had a depth of 3.8 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 2.8 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 2.8 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: nc73769110). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2022, August 17, 2022). M2.8 Earthquake 8km NNE of Walker, CAAugust 17, 2022. Retrieved October 28, 2022 from https://www.earthquaketracker.org/earthquakes/event/nc73769110/