QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

4 km N of Orocovis, Puerto Rico

· 29 km deep · released about 44 lb of TNT

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10 km30 km60 km120 km N Morovis Municipio 6 kmOrocovis Municipio 7 kmCorozal Municipio 8 kmBarranquitas Municipio 12 kmCiales Municipio 13 kmNaranjito Municipio 15 kmVillalba Municipio 18 kmCoamo Municipio 19 kmToa Alta Municipio 19 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 2.1 (md)
Depth
29 km below the surface
Felt
no reports yet
Nearest
Morovis Municipio, 6 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 433 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 44 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 340,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 240,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 44 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 18.2697, -66.3938. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Morovis Municipio, PR 6 km (4 mi) SSE of here earthquakes near Morovis Municipio
Orocovis Municipio, PR 7 km (5 mi) NE of here earthquakes near Orocovis Municipio
Corozal Municipio, PR 8 km (5 mi) WSW of here earthquakes near Corozal Municipio
Barranquitas Municipio, PR 12 km (7 mi) NW of here earthquakes near Barranquitas Municipio
Ciales Municipio, PR 13 km (8 mi) ESE of here earthquakes near Ciales Municipio
Naranjito Municipio, PR 15 km (9 mi) W of here earthquakes near Naranjito Municipio

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

Aftershocks so far

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

  1. 2.3 1 km ENE of Magas Arriba, Puerto Rico
  2. 2.1 3 km S of Potala Pastillo, Puerto Rico
  3. 3.2 4 km NNE of Ponce, Puerto Rico
  4. 3.2 13 km NNW of Brenas, Puerto Rico
  5. 2.0 4 km SW of Jagual, Puerto Rico
  6. 2.5 2 km ENE of Magas Arriba, Puerto Rico
  7. 3.3 2 km ENE of Magas Arriba, Puerto Rico
  8. 2.8 2 km NE of Magas Arriba, Puerto Rico
  9. 2.7 3 km ENE of Magas Arriba, Puerto Rico
  10. 2.4 2 km ENE of Ponce, Puerto Rico
  11. 2.5 2 km ENE of Ponce, 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 5.6 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.