QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

7 km SSW of Indios, Puerto Rico

· 9.0 km deep · released about 330 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 10 kmGuayanilla Municipio 10 kmPeñuelas Municipio 16 kmYauco Municipio 18 kmSabana Grande Municipio 21 kmLajas Municipio 22 kmPonce Municipio 26 kmSan Germán Municipio 29 kmMaricao Municipio 30 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
9.0 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Guánica Municipio, 10 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1511 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 330 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 46,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 33,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.9× the energy of this one
  4. This earthquake M 2.7 about 330 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 17.9260, -66.8360. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 10 km (6 mi) ESE of here earthquakes near Guánica Municipio
Guayanilla Municipio, PR 10 km (6 mi) SSW of here earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 16 km (10 mi) SW of here earthquakes near Peñuelas Municipio
Yauco Municipio, PR 18 km (11 mi) S of here earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 21 km (13 mi) SE of here earthquakes near Sabana Grande Municipio
Lajas Municipio, PR 22 km (14 mi) ESE of here earthquakes near Lajas Municipio

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

Aftershocks so far

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

  1. 1.8 Puerto Rico region
  2. 2.5 6 km SSE of Guánica, Puerto Rico
  3. 2.4 1 km NW of Magas Arriba, Puerto Rico
  4. 2.9 8 km S of Indios, Puerto Rico
  5. 2.4 9 km SSE of Indios, Puerto Rico
  6. 2.3 6 km SSE of Indios, Puerto Rico
  7. 2.1 4 km NE of La Parguera, Puerto Rico
  8. 3.6 4 km ENE of La Parguera, Puerto Rico
  9. 1.9 7 km SSE of Maria Antonia, Puerto Rico
  10. 2.4 5 km WSW of Guánica, Puerto Rico
  11. 2.8 6 km WSW of Guánica, Puerto Rico
  12. 2.8 6 km WSW of Guánica, Puerto Rico
  13. 2.6 3 km S of Guánica, Puerto Rico
  14. 1.7 8 km SSE of Maria Antonia, Puerto Rico
  15. 3.0 6 km WSW of Guánica, 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 6.4 on 2020-01-07 — it released about 370,000 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.