QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

37 km SSW of Esperanza, Puerto Rico

· 9.0 km deep · released about 47 lb of TNT

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10 km30 km60 km120 km N Maunabo Municipio 41 kmVieques Municipio 42 kmYabucoa Municipio 43 kmHumacao Municipio 45 kmPatillas Municipio 49 kmNaguabo Municipio 51 kmCeiba Municipio 53 kmArroyo Municipio 53 kmLas Piedras Municipio 55 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
9.0 km below the surface
Felt
no reports yet
Nearest
Maunabo Municipio, 41 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2732 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 47 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 5.8 320,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 20× the energy of this one
  4. This earthquake M 2.1 about 47 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 17.7800, -65.5826. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Maunabo Municipio, PR 41 km (26 mi) SE of here earthquakes near Maunabo Municipio
Vieques Municipio, PR 42 km (26 mi) SSW of here earthquakes near Vieques Municipio
Yabucoa Municipio, PR 43 km (27 mi) SE of here earthquakes near Yabucoa Municipio
Humacao Municipio, PR 45 km (28 mi) SSE of here earthquakes near Humacao Municipio
Patillas Municipio, PR 49 km (31 mi) ESE of here earthquakes near Patillas Municipio
Naguabo Municipio, PR 51 km (31 mi) SSE of here earthquakes near Naguabo Municipio

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

Aftershocks so far

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

  1. 2.4 21 km S of Lamboglia, Puerto Rico
  2. 1.5 11 km SSW of Emajagua, Puerto Rico
  3. 2.3 22 km SE of Esperanza, Puerto Rico
  4. 2.7 10 km S of Emajagua, Puerto Rico
  5. 2.0 21 km ESE of El Negro, Puerto Rico
  6. 2.3 13 km S of Esperanza, Puerto Rico
  7. 2.2 16 km S of Lamboglia, Puerto Rico
  8. 1.9 17 km S of Esperanza, Puerto Rico
  9. 2.6 11 km SE of Isabel Segunda, Puerto Rico
  10. 2.7 31 km SE of Esperanza, Puerto Rico
  11. 1.9 16 km SSW of Esperanza, Puerto Rico
  12. 2.7 18 km SSE of Esperanza, Puerto Rico
  13. 1.7 18 km SSE of Punta Santiago, Puerto Rico
  14. 2.5 26 km SE of Esperanza, Puerto Rico
  15. 2.9 10 km SSE 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 5,100 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.