3.4

M3.4 Earthquake 19 km SE of La Romana, Dominican Republic — September 28, 2026

2026-09-28 01:05:11 UTC (2 hours ago) · approx. 8:05 PM UTC-5 local

MagnitudeM3.4(md)
Time01:05 UTC≈ 8:05 PM UTC-5
Depth156.6 kmintermediate depth
Coordinates18.302°, -68.842°
Felt byNo felt reports
Status✓ Reviewed by USGS

On September 28, 2026 at 01:05 UTC, a magnitude 3.4 intermediate depth earthquake struck 19 km SE of La Romana, Dominican Republic, at a depth of 156.6 km and coordinates 18.3017°, -68.8423°.

Physical scale: An earthquake of magnitude 3.4 releases seismic energy equivalent to roughly 2.1 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 140 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 18.30°, -68.84°

Earthquake Details

Magnitude
3.4 md
Depth
156.6 km
intermediate depth
Location
18.3017°N
-68.8423°E

Technical Information

Event ID
pr71534883
Event Type
earthquake
Status
✓ Reviewed
Significance
181
Stations Used
28
Azimuthal Gap
180.0°
Min Station Distance
0.486°
RMS Residual
0.43 sec
Last Updated
2026-09-28 03:12:23 UTC

Common Questions

How strong was the magnitude 3.4 earthquake near La Romana, Dominican Republic?

The magnitude 3.4 earthquake that struck 19 km SE of La Romana, Dominican Republic on September 28, 2026 at 01:05 UTC had a depth of 156.6 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: pr71534883). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, September 28, 2026). M3.4 Earthquake 19 km SE of La Romana, Dominican Republic — September 28, 2026. Retrieved September 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/pr71534883/