3.3

M3.3 Earthquake 6 km ESE of La Parguera, Puerto RicoJuly 10, 2026

2026-07-10 01:10:24 UTC (1 hour ago) · approx. 9:10 PM UTC-4 local

MagnitudeM3.3(md)
Time01:10 UTC9:10 PM UTC-4
Depth8.8 kmshallow crustal
Coordinates17.953°, -66.993°
Felt by4DYFI responses
Status✓ Reviewed by USGS

On July 10, 2026 at 01:10 UTC, a magnitude 3.3 shallow crustal earthquake struck 6 km ESE of La Parguera, Puerto Rico, at a depth of 8.8 km and coordinates 17.9532°, -66.9930°.

Physical scale: An earthquake of magnitude 3.3 releases seismic energy equivalent to roughly 1.3 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 114 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 17.95°, -66.99°

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 M3.3 earthquake near 6 km ESE of La Parguera, Puerto Rico

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

Earthquake Details

Magnitude
3.3 md
Depth
8.8 km
shallow crustal
Location
17.9532°N
-66.9930°E
Felt Reports
4
DYFI responses
Community Intensity
3.4
CDI from reports

Technical Information

Event ID
pr71523218
Event Type
earthquake
Status
✓ Reviewed
Significance
169
Stations Used
25
Azimuthal Gap
200.0°
Min Station Distance
0.051°
RMS Residual
0.11 sec
Last Updated
2026-07-10 01:47:19 UTC

Common Questions

How strong was the magnitude 3.3 earthquake near La Parguera, Puerto Rico?

The magnitude 3.3 earthquake that struck 6 km ESE of La Parguera, Puerto Rico on July 10, 2026 at 01:10 UTC had a depth of 8.8 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 3.3 earthquakes can continue for several days and gradually diminish over time.

What should I do after an earthquake?

If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks.

Understanding This Data

Magnitude 3.3 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: pr71523218). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, July 10, 2026). M3.3 Earthquake 6 km ESE of La Parguera, Puerto RicoJuly 10, 2026. Retrieved July 10, 2026 from https://www.earthquaketracker.org/earthquakes/event/pr71523218/