QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

38 km W of Pole Ojea, Puerto Rico

· 144 km deep · released about 360 lb of TNT

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10 km30 km60 km120 km N Mayagüez Municipio 37 kmCabo Rojo Municipio 39 kmHormigueros Municipio 47 kmRincón Municipio 48 kmAñasco Municipio 53 kmLajas Municipio 54 kmSan Germán Municipio 55 kmAguada Municipio 55 kmMoca Municipio 64 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.7 (md)
Depth
144 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 37 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2572 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 360 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 42,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 30,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.6× the energy of this one
  4. This earthquake M 2.7 about 360 lb of TNT

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 18.0148, -67.5451. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 37 km (23 mi) ESE of here earthquakes near Mayagüez Municipio
Cabo Rojo Municipio, PR 39 km (24 mi) W of here earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 47 km (29 mi) WSW of here earthquakes near Hormigueros Municipio
Rincón Municipio, PR 48 km (30 mi) SW of here earthquakes near Rincón Municipio
Añasco Municipio, PR 53 km (33 mi) SW of here earthquakes near Añasco Municipio
Lajas Municipio, PR 54 km (33 mi) W of here earthquakes near Lajas Municipio

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

36 earthquakes have been recorded within 50 km since this one.

  1. 2.4 6 km W of Stella, Puerto Rico
  2. 2.5 61 km WSW of Stella, Puerto Rico
  3. 2.3 25 km SW of Stella, Puerto Rico
  4. 2.4 Mona Passage
  5. 2.4 12 km W of Stella, Puerto Rico
  6. 2.7 60 km ESE of Punta Cana, Dominican Republic
  7. 2.4 32 km WSW of Stella, Puerto Rico
  8. 2.7 44 km W of Pole Ojea, Puerto Rico
  9. 1.6 0 km NW of Cabo Rojo, Puerto Rico
  10. 1.7 3 km WNW of Pole Ojea, Puerto Rico
  11. 2.6 31 km W of Puerto Real, Puerto Rico
  12. 1.8 7 km WNW of Puerto Real, Puerto Rico
  13. 2.4 37 km W of Puerto Real, Puerto Rico
  14. 1.7 13 km WSW of Pole Ojea, Puerto Rico
  15. 1.8 4 km WNW of Hormigueros, Puerto Rico

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 4.3 on 2019-09-05 — it released about 230 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.