QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

9 km SE of La Parguera, Puerto Rico

· 11 km deep · released about 24 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 7 kmLajas Municipio 9 kmSabana Grande Municipio 19 kmGuayanilla Municipio 22 kmSan Germán Municipio 22 kmYauco Municipio 23 kmCabo Rojo Municipio 23 kmHormigueros Municipio 28 kmMaricao Municipio 29 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 1.9 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 7 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 281 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 24 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 640,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 450,000× the energy of this one
  3. Around the size people start to feel M 3.0 40× the energy of this one
  4. This earthquake M 1.9 about 24 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 17.9183, -66.9798. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 7 km (4 mi) WSW of here earthquakes near Guánica Municipio
Lajas Municipio, PR 9 km (6 mi) SE of here earthquakes near Lajas Municipio
Sabana Grande Municipio, PR 19 km (12 mi) S of here earthquakes near Sabana Grande Municipio
Guayanilla Municipio, PR 22 km (13 mi) WSW of here earthquakes near Guayanilla Municipio
San Germán Municipio, PR 22 km (14 mi) SSE of here earthquakes near San Germán Municipio
Yauco Municipio, PR 23 km (14 mi) SW of here earthquakes near Yauco Municipio

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

Aftershocks so far

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

  1. 2.8 1 km SW of Guayanilla, Puerto Rico
  2. 2.3 3 km SSW of Guánica, Puerto Rico
  3. 2.2 5 km SSW of Indios, Puerto Rico
  4. 2.4 0 km NNE of Palomas, Puerto Rico
  5. 2.1 1 km NNW of Palomas, Puerto Rico
  6. 1.9 2 km NNW of Guayanilla, Puerto Rico
  7. 1.9 6 km E of La Parguera, Puerto Rico
  8. 2.4 3 km SSW of Guánica, Puerto Rico
  9. 2.5 2 km WSW of Ponce, Puerto Rico
  10. 2.2 1 km WNW of Indios, Puerto Rico
  11. 2.4 3 km WSW of Indios, Puerto Rico
  12. 2.1 1 km W of Indios, Puerto Rico
  13. 2.2 1 km SE of Palomas, Puerto Rico
  14. 2.8 3 km N of San Germán, Puerto Rico
  15. 2.0 2 km NW 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 5,100,000 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.