3.4

M3.4 Earthquake 6 km E of La Parguera, Puerto RicoOctober 3, 2022

2022-10-03 22:08:59 UTC (2022-10-03) · approx. 6:08 PM UTC-4 local

MagnitudeM3.4(md)
Time22:08 UTC6:08 PM UTC-4
Depth8.0 kmshallow crustal
Coordinates17.971°, -66.988°
Felt by2DYFI responses
Status✓ Reviewed by USGS

On October 3, 2022 at 22:08 UTC, a magnitude 3.4 shallow crustal earthquake struck 6 km E of La Parguera, Puerto Rico, at a depth of 8.0 km and coordinates 17.9711°, -66.9876°.

Physical scale: An earthquake of magnitude 3.4 releases seismic energy equivalent to roughly 1.6 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 123 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 17.97°, -66.99°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 2 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 6 km E of La Parguera, Puerto Rico

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

Earthquake Details

Magnitude
3.4 md
Depth
8.0 km
shallow crustal
Location
17.9711°N
-66.9876°E
Felt Reports
2
DYFI responses
Community Intensity
3.4
CDI from reports

Technical Information

Event ID
pr2022276002
Event Type
earthquake
Status
✓ Reviewed
Significance
173
Stations Used
22
Azimuthal Gap
169.0°
Min Station Distance
0.057°
RMS Residual
0.21 sec
Last Updated
2022-12-10 22:53:03 UTC

Common Questions

How strong was the magnitude 3.4 earthquake near La Parguera, Puerto Rico?

The magnitude 3.4 earthquake that struck 6 km E of La Parguera, Puerto Rico on October 3, 2022 at 22:08 UTC had a depth of 8.0 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 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: pr2022276002). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2022, October 3, 2022). M3.4 Earthquake 6 km E of La Parguera, Puerto RicoOctober 3, 2022. Retrieved December 10, 2022 from https://www.earthquaketracker.org/earthquakes/event/pr2022276002/