QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1md

7 km NNE of Utuado, Puerto Rico

· 119 km deep · released about 1,400 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Utuado Municipio 8 kmFlorida Municipio 12 kmArecibo Municipio 12 kmJayuya Municipio 15 kmCiales Municipio 16 kmHatillo Municipio 19 kmAdjuntas Municipio 19 kmBarceloneta Municipio 19 kmManatí 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 3.1 (md)
Depth
119 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Utuado Municipio, 8 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 912 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 1,400 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 230,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 10,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,400× the energy of this one
  4. This earthquake M 3.1 about 1,400 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.5× more

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 18.3275, -66.6635. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Utuado Municipio, PR 8 km (5 mi) NNE of here earthquakes near Utuado Municipio
Florida Municipio, PR 12 km (7 mi) WSW of here earthquakes near Florida Municipio
Arecibo Municipio, PR 12 km (7 mi) S of here earthquakes near Arecibo Municipio
Jayuya Municipio, PR 15 km (9 mi) NNW of here earthquakes near Jayuya Municipio
Ciales Municipio, PR 16 km (10 mi) WNW of here earthquakes near Ciales Municipio
Hatillo Municipio, PR 19 km (12 mi) SE of here earthquakes near Hatillo Municipio

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

Aftershocks so far

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

  1. 2.5 4 km SW of Indios, Puerto Rico
  2. 2.1 6 km S of Indios, Puerto Rico
  3. 2.7 3 km SE of Pájaros, Puerto Rico
  4. 2.3 5 km SSE of Maria Antonia, Puerto Rico
  5. 2.2 2 km E of Indios, Puerto Rico
  6. 2.7 0 km WSW of Guánica, Puerto Rico
  7. 2.8 2 km SSE of Guánica, Puerto Rico
  8. 2.1 1 km SW of Indios, Puerto Rico
  9. 2.1 2 km SW of Indios, Puerto Rico
  10. 2.1 8 km NW of Coamo, Puerto Rico
  11. 2.9 8 km S of Orocovis, Puerto Rico
  12. 2.6 7 km SSW of Ponce, Puerto Rico
  13. 2.3 6 km NNE of Sabana Grande, Puerto Rico
  14. 2.1 5 km WSW of Liborio Negron Torres, Puerto Rico
  15. 2.1 2 km SW 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 83,000 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.