2.0

M2.0 Earthquake 4 km SW of Port Ludlow, WashingtonOctober 27, 2023

2023-10-27 21:26:44 UTC (2023-10-27) · approx. 1:26 PM UTC-8 local

MagnitudeM2.0(ml)
Time21:26 UTC1:26 PM UTC-8
Depth-0.0 kmshallow crustal
Coordinates47.888°, -122.721°
Felt by1DYFI response
Status✓ Reviewed by USGS

On October 27, 2023 at 21:26 UTC, a magnitude 2.0 shallow crustal earthquake struck 4 km SW of Port Ludlow, Washington, at a depth of -0.0 km and coordinates 47.8883°, -122.7210°.

Physical scale: An earthquake of magnitude 2.0 releases seismic energy equivalent to roughly 16.2 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 15 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 47.89°, -122.72°

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 M2.0 earthquake near 4 km SW of Port Ludlow, Washington

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

Earthquake Details

Magnitude
2.0 ml
Depth
-0.0 km
shallow crustal
Location
47.8883°N
-122.7210°E
Felt Reports
1
DYFI responses
Community Intensity
2.0
CDI from reports

Technical Information

Event ID
uw61959792
Event Type
explosion
Status
✓ Reviewed
Significance
63
Stations Used
18
Azimuthal Gap
52.0°
Min Station Distance
0.098°
RMS Residual
0.35 sec
Last Updated
2025-12-18 18:31:58 UTC

Common Questions

How strong was the magnitude 2.0 earthquake near Port Ludlow, Washington?

The magnitude 2.0 earthquake that struck 4 km SW of Port Ludlow, Washington on October 27, 2023 at 21:26 UTC had a depth of -0.0 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 2.0 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 2.0 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: uw61959792). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, October 27, 2023). M2.0 Earthquake 4 km SW of Port Ludlow, WashingtonOctober 27, 2023. Retrieved December 18, 2025 from https://www.earthquaketracker.org/earthquakes/event/uw61959792/