QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

3 km WNW of Guayabal, Puerto Rico

· 23 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Villalba Municipio 7 kmJuana Díaz Municipio 12 kmPonce Municipio 13 kmJayuya Municipio 14 kmOrocovis Municipio 17 kmCoamo Municipio 19 kmCiales Municipio 22 kmPeñuelas Municipio 22 kmSanta Isabel Municipio 22 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
23 km below the surface
Felt
no reports yet
Nearest
Villalba Municipio, 7 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 556 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 43 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 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× 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 43 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 18.0977, -66.5327. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Villalba Municipio, PR 7 km (5 mi) WSW of here earthquakes near Villalba Municipio
Juana Díaz Municipio, PR 12 km (7 mi) NNW of here earthquakes near Juana Díaz Municipio
Ponce Municipio, PR 13 km (8 mi) NE of here earthquakes near Ponce Municipio
Jayuya Municipio, PR 14 km (9 mi) SSE of here earthquakes near Jayuya Municipio
Orocovis Municipio, PR 17 km (10 mi) SW of here earthquakes near Orocovis Municipio
Coamo Municipio, PR 19 km (12 mi) W of here earthquakes near Coamo 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. 2.2 1 km SW of Indios, Puerto Rico
  2. 2.4 2 km SSE of Indios, Puerto Rico
  3. 2.0 0 km SE of Indios, Puerto Rico
  4. 2.4 2 km SSW of Guánica, Puerto Rico
  5. 2.1 2 km NW of Tallaboa, Puerto Rico
  6. 2.6 29 km S of Tallaboa, Puerto Rico
  7. 1.6 2 km S of G. L. Garcia, Puerto Rico
  8. 2.2 9 km SSE of Maria Antonia, Puerto Rico
  9. 2.3 1 km S of Indios, Puerto Rico
  10. 2.4 0 km ESE of Indios, Puerto Rico
  11. 2.5 1 km ESE of Indios, Puerto Rico
  12. 2.3 1 km SE of Indios, Puerto Rico
  13. 2.5 1 km W of Indios, Puerto Rico
  14. 2.4 1 km WSW of Indios, Puerto Rico
  15. 2.4 1 km SSE 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 2,800,000 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.