Minor 3.4 Earthquake Near Boca de Yuma, Dominican Republic
A minor magnitude 3.4 earthquake struck 23 km SSE of Boca de Yuma, Dominican Republic on Monday, September 28, 2026 at 07:35:09 AM UTC. This intermediate focal depth (86.5 km depth) released energy equivalent to approximately 2 tons of TNT. Here is the verified PR telemetry, live epicenter map, and ground shaking assessment.
(23 km SSE of)Seismic Telemetry Specifications
3.4MD
Minor Seismic Class
86.5km
Upper Mantle
18.185° N, 68.510° W
GPS Coordinates
2 tons
TNT Equivalent Power
PR
USGS Real-time Feed
Epicenter Location & Tectonic Fault Map
Is This Earthquake Dangerous?
A magnitude 3.4 event is classified as a minor earthquake. Often felt by people indoors, especially on upper floors. Hanging objects may swing slightly; structural damage is extremely rare.
Estimated Shaking Across Nearby Communities
Felt only by a few persons at rest, especially on upper floors.
Felt by almost no one except under extraordinarily favorable conditions.
Did You Feel This Earthquake?
Help seismologists and community members map real-world ground shaking near Dominican Republic.
Your immediate response verifies shaking boundaries and helps ground-truth instrumental models.
What Does Magnitude 3.4 Mean?
Earthquake strength is measured on a logarithmic scale. Compare this event with the full seismic scale:
Logarithmic Energy Multiplier
Because seismic scales are logarithmic, each whole integer increase represents:
Why Did This Earthquake Happen?
Dominican Republic's seismicity is fundamentally governed by its tectonic setting: Northern boundary of Caribbean Plate colliding obliquely with North American Plate across Hispaniola. Major regional fault structures include Septentrional Fault Zone, Enriquillo-Plantain Garden Fault, Hispaniola Trench.
Originating at a depth of 86.5 km (Upper Mantle / Wadati-Benioff Zone (70–300 km)), this rupture occurred originated within the descending oceanic plate inside the upper mantle. shaking radiates over a wider geographic area with attenuated high frequencies.
Aftershock Outlook & Secondary Tremors
Micro-tremors and minor events of this scale are part of ongoing background tectonic relaxation. While isolated micro-aftershocks may occur, the likelihood of a damaging secondary event remains statistically low under normal seismic conditions.
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Earthquake Safety Action Plan
Complete Safety Guide →- •Drop, Cover, and Hold On: Take cover beneath a sturdy table or desk.
- •Stay indoors away from exterior glass windows and heavy unanchored fixtures.
- •If outdoors, move into an open area away from power lines and building facades.
- •Inspect utilities for damaged gas lines, water leaks, or electrical hazards.
- •Expect Aftershocks: Secondary tremors frequently strike after significant events.
- •Avoid damaged structures and listen to official emergency broadcasts.
- •Maintain a 72-hour emergency go-bag with water, food, and first aid.
- •Anchor heavy furniture, water heaters, and appliances to structural studs.
- •Establish a family emergency communication protocol and meeting point.
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