QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5Md

10 km S of Emajagua, Puerto Rico

· 13 km deep · released about 5.4 lb of TNT

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10 km30 km60 km120 km N Maunabo Municipio 11 kmPatillas Municipio 14 kmArroyo Municipio 17 kmYabucoa Municipio 18 kmGuayama Municipio 26 kmSan Lorenzo Municipio 28 kmHumacao Municipio 28 kmLas Piedras Municipio 32 kmCayey Municipio 35 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 1.5 (Md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Maunabo Municipio, 11 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3552 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 17.9036, -65.8991. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Maunabo Municipio, PR 11 km (7 mi) S of here earthquakes near Maunabo Municipio
Patillas Municipio, PR 14 km (9 mi) SE of here earthquakes near Patillas Municipio
Arroyo Municipio, PR 17 km (11 mi) ESE of here earthquakes near Arroyo Municipio
Yabucoa Municipio, PR 18 km (11 mi) SSW of here earthquakes near Yabucoa Municipio
Guayama Municipio, PR 26 km (16 mi) ESE of here earthquakes near Guayama Municipio
San Lorenzo Municipio, PR 28 km (18 mi) SSE of here earthquakes near San Lorenzo Municipio

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

Aftershocks so far

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

  1. 2.4 20 km SE of El Negro, Puerto Rico
  2. 2.4 23 km SE of El Negro, Puerto Rico
  3. 2.2 22 km SSW of Esperanza, Puerto Rico
  4. 2.5 10 km S of Emajagua, Puerto Rico
  5. 2.3 10 km SSE of Emajagua, Puerto Rico
  6. 3.0 18 km SSE of Lamboglia, Puerto Rico
  7. 2.4 29 km SE of El Negro, Puerto Rico
  8. 2.2 29 km SE of El Negro, Puerto Rico
  9. 2.5 0 km SW of Aguas Claras, Puerto Rico
  10. 2.5 Puerto Rico region
  11. 2.6 33 km SE of Emajagua, Puerto Rico
  12. 2.7 29 km SE of El Negro, Puerto Rico
  13. 1.6 3 km SE of Punta Santiago, Puerto Rico
  14. 2.5 31 km SSW of Esperanza, Puerto Rico
  15. 1.8 8 km SSW of Emajagua, 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 45,000 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.