Earthquake · reviewed by a seismologist
M 3.9md
22 km SW of Boca de Yuma, Dominican Republic
- When
- Magnitude
- M 3.9 (md)
- Depth
- 122 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- Mayagüez Municipio, 95 km E
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 337 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.
How big was it?
This earthquake released about 11 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.9 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 16,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 710× the energy of this one
- Magna, Utah 2020 M 5.7 500× the energy of this one
- This earthquake M 3.9 about 11 tons of TNT
- Around the size people start to feel M 3.0 this one released 22× more
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
Where
Epicentre 18.2456, -68.7666. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Mayagüez Municipio, PR | 95 km (59 mi) | W of here | earthquakes near Mayagüez Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
50 earthquakes have been recorded within 50 km since this one.
- 4.2 35 km SSE of Boca de Yuma, Dominican Republic
- 3.8 49 km S of La Romana, Dominican Republic
- 3.7 21 km SSE of Boca de Yuma, Dominican Republic
- 3.4 56 km SSE of Boca de Yuma, Dominican Republic
- 3.4 39 km SSE of Boca de Yuma, Dominican Republic
- 3.9 3 km NNE of Boca de Yuma, Dominican Republic
- 3.7 12 km W of San Rafael del Yuma, Dominican Republic
- 3.6 37 km S of Boca de Yuma, Dominican Republic
- 3.8 45 km SSE of Boca de Yuma, Dominican Republic
- 3.9 5 km WSW of San Rafael del Yuma, Dominican Republic
- 3.4 44 km S of Boca de Yuma, Dominican Republic
- 3.6 37 km SSE of Boca de Yuma, Dominican Republic
- 3.6 32 km S of Boca de Yuma, Dominican Republic
- 3.8 44 km SSE of Boca de Yuma, Dominican Republic
- 3.6 8 km NNE of Boca de Yuma, Dominican Republic
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
For this area
The largest earthquake within 50 km in our catalogue was M 5.7 on 2025-08-05 — it released about 500 times the energy of this one.
From the QuakeIndex catalogue, built from the USGS FDSN event service.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.