QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

8 km S of Orocovis, Puerto Rico

· 7.4 km deep · released about 700 lb of TNT

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10 km30 km60 km120 km N Coamo Municipio 7 kmVillalba Municipio 8 kmOrocovis Municipio 8 kmBarranquitas Municipio 11 kmAibonito Municipio 15 kmMorovis Municipio 18 kmCorozal Municipio 18 kmCiales Municipio 20 kmJuana Díaz Municipio 20 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 2.9 (md)
Depth
7.4 km below the surface
Felt
no reports yet
Nearest
Coamo Municipio, 7 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 973 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 700 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 15,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 700 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 18.1548, -66.4038. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Coamo Municipio, PR 7 km (5 mi) NW of here earthquakes near Coamo Municipio
Villalba Municipio, PR 8 km (5 mi) ENE of here earthquakes near Villalba Municipio
Orocovis Municipio, PR 8 km (5 mi) SSE of here earthquakes near Orocovis Municipio
Barranquitas Municipio, PR 11 km (7 mi) WSW of here earthquakes near Barranquitas Municipio
Aibonito Municipio, PR 15 km (9 mi) W of here earthquakes near Aibonito Municipio
Morovis Municipio, PR 18 km (11 mi) S of here earthquakes near Morovis Municipio

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

Aftershocks so far

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

  1. 2.6 3 km SE of Jauca, Puerto Rico
  2. 2.5 2 km SSW of Indios, Puerto Rico
  3. 2.5 3 km NW of Orocovis, Puerto Rico
  4. 2.4 12 km S of Arroyo, Puerto Rico
  5. 2.4 7 km SW of Central Aguirre, Puerto Rico
  6. 2.1 2 km ESE of Magas Arriba, Puerto Rico
  7. 2.5 13 km S of Arroyo, Puerto Rico
  8. 2.3 1 km N of Indios, Puerto Rico
  9. 2.4 2 km SSW of Indios, Puerto Rico
  10. 2.3 22 km SSW of Central Aguirre, Puerto Rico
  11. 2.5 0 km WSW of Indios, Puerto Rico
  12. 2.5 0 km WNW of Indios, Puerto Rico
  13. 2.5 1 km SSW of Indios, Puerto Rico
  14. 2.5 1 km W of Indios, Puerto Rico
  15. 2.6 1 km SE of Magas Arriba, 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 170,000 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.