2.7

M2.7 Earthquake 12km SSW of Ferndale, CAJanuary 27, 2022

2022-01-27 22:07:58 UTC (2022-01-27) · approx. 2:07 PM UTC-8 local

MagnitudeM2.7(md)
Time22:07 UTC2:07 PM UTC-8
Depth18.0 kmshallow crustal
Coordinates40.477°, -124.321°
Felt by4DYFI responses
Status✓ Reviewed by USGS

On January 27, 2022 at 22:07 UTC, a magnitude 2.7 shallow crustal earthquake struck 12km SSW of Ferndale, CA, at a depth of 18.0 km and coordinates 40.4770°, -124.3208°.

Physical scale: An earthquake of magnitude 2.7 releases seismic energy equivalent to roughly 158 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 43 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 40.48°, -124.32°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 4 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 M2.7 earthquake near 12km SSW of Ferndale, CA

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

Earthquake Details

Magnitude
2.7 md
Depth
18.0 km
shallow crustal
Location
40.4770°N
-124.3208°E
Felt Reports
4
DYFI responses
Community Intensity
2.8
CDI from reports

Technical Information

Event ID
nc73683766
Event Type
earthquake
Status
✓ Reviewed
Significance
112
Stations Used
28
Azimuthal Gap
114.0°
Min Station Distance
0.013°
RMS Residual
0.09 sec
Last Updated
2022-04-09 20:19:12 UTC

Common Questions

How strong was the magnitude 2.7 earthquake near Ferndale, CA?

The magnitude 2.7 earthquake that struck 12km SSW of Ferndale, CA on January 27, 2022 at 22:07 UTC had a depth of 18.0 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 2.7 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 2.7 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: nc73683766). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2022, January 27, 2022). M2.7 Earthquake 12km SSW of Ferndale, CAJanuary 27, 2022. Retrieved April 9, 2022 from https://www.earthquaketracker.org/earthquakes/event/nc73683766/