Earthquake · reviewed by a seismologist
M 3.1md
63 km SE of Boca de Yuma, Dominican Republic
Yes. A magnitude 3.1 earthquake was recorded 63 km SE of Boca de Yuma, Dominican Republic, at 11:47 pm AST on 17 July 2018 (03:47 UTC), 49 km deep.
- When
- Magnitude
- M 3.1 (md)
- Depth
- 49 km below the surface
- Felt
- no reports yet
- Nearest
- Mayagüez Municipio, 42 km ENE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2960 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth it was probably too small to be felt, even directly above it. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
How big was it?
This earthquake released about 1,400 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 230,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 10,000× the energy of this one
- Magna, Utah 2020 M 5.7 7,400× the energy of this one
- This earthquake M 3.1 about 1,400 lb of TNT
- Around the size people start to feel M 3.0 this one released 1.5× 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.
For this area
The largest earthquake within 50 km in our catalogue was M 4.3 on 2017-06-22 — about 63 times the energy of this one.
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 17.9230, -68.2426. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Mayagüez Municipio, PR | 42 km (26 mi) | ENE | earthquakes near Mayagüez Municipio |
| Cabo Rojo Municipio, PR | 113 km (70 mi) | E | earthquakes near Cabo Rojo Municipio |
| Rincón Municipio, PR | 115 km (71 mi) | ENE | earthquakes near Rincón Municipio |
| Hormigueros Municipio, PR | 121 km (75 mi) | ENE | earthquakes near Hormigueros Municipio |
| Aguada Municipio, PR | 122 km (76 mi) | ENE | earthquakes near Aguada Municipio |
| Añasco Municipio, PR | 124 km (77 mi) | ENE | earthquakes near Añasco Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
46 earthquakes have been recorded within 50 km since this one.
- 3.0 67 km SE of Punta Cana, Dominican Republic
- 3.0 39 km SSE of Boca de Yuma, Dominican Republic
- 2.5 55 km SE of Punta Cana, Dominican Republic
- 3.3 59 km SE of Punta Cana, Dominican Republic
- 3.0 72 km ESE of Boca de Yuma, Dominican Republic
- 3.0 83 km SE of Boca de Yuma, Dominican Republic
- 2.6 35 km S of Boca de Yuma, Dominican Republic
- 3.3 33 km NNW of Boca de Yuma, Dominican Republic
- 3.0 66 km SE of Punta Cana, Dominican Republic
- 2.8 65 km WSW of Stella, Puerto Rico
- 3.0 65 km SE of Punta Cana, Dominican Republic
- 2.8 61 km SE of Punta Cana, Dominican Republic
- 3.4 55 km SSE of Punta Cana, Dominican Republic
- 3.2 50 km SSE of Boca de Yuma, Dominican Republic
- 3.2 48 km S 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.
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.