3.9

M3.9 Earthquake 5 km WSW of San Rafael del Yuma, Dominican RepublicJanuary 23, 2026

2026-01-23 16:29:03 UTC (2026-01-23) · approx. 11:29 AM UTC-5 local

MagnitudeM3.9(md)
Time16:29 UTC11:29 AM UTC-5
Depth127.0 kmintermediate depth
Coordinates18.411°, -68.721°
Felt byNo felt reports
Status✓ Reviewed by USGS

On January 23, 2026 at 16:29 UTC, a magnitude 3.9 intermediate depth earthquake struck 5 km WSW of San Rafael del Yuma, Dominican Republic, at a depth of 127.0 km and coordinates 18.4113°, -68.7206°.

Physical scale: An earthquake of magnitude 3.9 releases seismic energy equivalent to roughly 9.3 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 278 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 18.41°, -68.72°

Earthquake Details

Magnitude
3.9 md
Depth
127.0 km
intermediate depth
Location
18.4113°N
-68.7206°E

Technical Information

Event ID
pr2026023002
Event Type
earthquake
Status
✓ Reviewed
Significance
229
Stations Used
21
Azimuthal Gap
229.0°
Min Station Distance
0.354°
RMS Residual
0.20 sec
Last Updated
2026-04-21 16:28:01 UTC

Common Questions

How strong was the magnitude 3.9 earthquake near San Rafael del Yuma, Dominican Republic?

The magnitude 3.9 earthquake that struck 5 km WSW of San Rafael del Yuma, Dominican Republic on January 23, 2026 at 16:29 UTC had a depth of 127.0 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 3.9 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. For detailed guidance, see our earthquake safety guide and emergency planning resources.

Authoritative source: USGS event page (event ID: pr2026023002). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, January 23, 2026). M3.9 Earthquake 5 km WSW of San Rafael del Yuma, Dominican RepublicJanuary 23, 2026. Retrieved May 15, 2026 from https://www.earthquaketracker.org/earthquakes/event/pr2026023002/