QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

54 km S of Emajagua, Puerto Rico

· 14 km deep · released about 1,100 lb of TNT

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10 km30 km60 km120 km N Maunabo Municipio 55 kmArroyo Municipio 57 kmPatillas Municipio 58 kmYabucoa Municipio 61 kmGuayama Municipio 63 kmHumacao Municipio 69 kmSalinas Municipio 71 kmSan Lorenzo Municipio 73 kmLas Piedras Municipio 75 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 3.0 (md)
Depth
14 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Maunabo Municipio, 55 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1555 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 1,100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 310,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 14,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 9,800× the energy of this one
  4. This earthquake M 3.0 about 1,100 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 17.5177, -65.7910. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Maunabo Municipio, PR 55 km (34 mi) SSE of here earthquakes near Maunabo Municipio
Arroyo Municipio, PR 57 km (35 mi) SSE of here earthquakes near Arroyo Municipio
Patillas Municipio, PR 58 km (36 mi) SSE of here earthquakes near Patillas Municipio
Yabucoa Municipio, PR 61 km (38 mi) S of here earthquakes near Yabucoa Municipio
Guayama Municipio, PR 63 km (39 mi) SE of here earthquakes near Guayama Municipio
Humacao Municipio, PR 69 km (43 mi) S of here earthquakes near Humacao Municipio

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

Aftershocks so far

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

  1. 2.6 6 km S of Emajagua, Puerto Rico
  2. 2.4 23 km SSE of Arroyo, Puerto Rico
  3. 2.2 12 km SSE of Arroyo, Puerto Rico
  4. 2.8 24 km ESE of El Negro, Puerto Rico
  5. 2.1 20 km SSE of Arroyo, Puerto Rico
  6. 2.3 10 km S of Emajagua, Puerto Rico
  7. 2.5 17 km SSE of Lamboglia, Puerto Rico
  8. 1.9 9 km SSW of Emajagua, Puerto Rico
  9. 3.1 Puerto Rico region
  10. 2.8 16 km S of Lamboglia, Puerto Rico
  11. 2.8 28 km SE of Emajagua, Puerto Rico
  12. 3.2 24 km SW of Esperanza, Puerto Rico
  13. 3.1 34 km S of Lamboglia, Puerto Rico
  14. 2.7 18 km SSE of Arroyo, Puerto Rico
  15. 2.9 33 km SSW of Esperanza, 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 4.6 on 2016-12-05 — it released about 220 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.