QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

Puerto Rico region

· 2.8 km deep · released about 49 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orocovis Municipio 5 kmVillalba Municipio 6 kmCoamo Municipio 11 kmBarranquitas Municipio 13 kmMorovis Municipio 16 kmCiales Municipio 17 kmJayuya Municipio 17 kmAibonito Municipio 18 kmCorozal Municipio 18 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
2.8 km below the surface
Felt
no reports yet
Nearest
Orocovis Municipio, 5 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1121 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 49 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 5.8 310,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 220,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 49 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 18.1700, -66.4288. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Orocovis Municipio, PR 5 km (3 mi) S of here earthquakes near Orocovis Municipio
Villalba Municipio, PR 6 km (4 mi) NE of here earthquakes near Villalba Municipio
Coamo Municipio, PR 11 km (7 mi) NW of here earthquakes near Coamo Municipio
Barranquitas Municipio, PR 13 km (8 mi) WSW of here earthquakes near Barranquitas Municipio
Morovis Municipio, PR 16 km (10 mi) S of here earthquakes near Morovis Municipio
Ciales Municipio, PR 17 km (10 mi) SSE of here earthquakes near Ciales Municipio

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

Aftershocks so far

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

  1. 2.5 Puerto Rico region
  2. 2.6 Puerto Rico region
  3. 2.7 4 km S of Salinas, Puerto Rico
  4. 2.3 4 km SSE of Salinas, Puerto Rico
  5. 2.7 1 km SSW of Magas Arriba, Puerto Rico
  6. 1.9 Puerto Rico region
  7. 2.3 1 km SSW of Ponce, Puerto Rico
  8. 2.4 0 km WSW of Ponce, Puerto Rico
  9. 2.5 3 km SW of Indios, Puerto Rico
  10. 2.1 2 km WNW of Guayanilla, Puerto Rico
  11. 2.5 2 km E of Yauco, Puerto Rico
  12. 3.3 Puerto Rico region
  13. 2.5 5 km SSE of Indios, Puerto Rico
  14. 2.4 1 km N of Indios, Puerto Rico
  15. 2.5 1 km WNW of Indios, 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 2,500,000 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.