QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

Earthquake near La Parguera, PR

No earthquake was likely felt in La Parguera in the 24 hours to 11:33 am AST (15:33 UTC). The last one was M 2.1, 9 km (5 mi) WNW, at 11:57 pm AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near La Parguera

This page: a magnitude 1.5 earthquake was recorded in La Parguera, PR, at 8:11 pm AST on 9 March 2018 (00:11 UTC), 18 km deep.

USGS: 1 km NE of La Parguera, Puerto Rico

44 km (27 mi) W of Ponce, PR · 27 km (17 mi) SSE of Mayagüez, PR

8:11 pm AST, Mar 9, 2018 · · 18 km deep · released about 5.6 lb of TNT

Every earthquake near La Parguera Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lajas Municipio 1 kmGuánica Municipio 13 kmSan Germán Municipio 14 kmSabana Grande Municipio 15 kmCabo Rojo Municipio 15 kmHormigueros Municipio 19 kmYauco Municipio 22 kmMaricao Municipio 24 kmGuayanilla Municipio 25 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
8:11 pm AST on 9 March 2018 ()
Where
in La Parguera, PR · earthquakes near La Parguera
Magnitude
M 1.5 (md)
Depth
18 km below the surface
Felt
no reports yet
Nearest
Lajas Municipio, 1 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3168 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Earthquakes near other towns within 30 km: Palmarejo, Lajas, San Germán, Liborio Negron Torres, Sabana Eneas, Fuig.

How big was it?

This earthquake released about 5.6 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 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:

  1. 5.8 4 km E of Moca, Puerto Rico · 46 km N of this epicentre
  2. 5.2 19 km SW of Stella, Puerto Rico · 42 km WNW of this epicentre
  3. 5.1 21 km SW of Stella, Puerto Rico · 41 km WNW of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 17.9838, -67.0351. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lajas Municipio, PR 1 km (0 mi) SW earthquakes near Lajas Municipio
Guánica Municipio, PR 13 km (8 mi) ESE earthquakes near Guánica Municipio
San Germán Municipio, PR 14 km (9 mi) N earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 15 km (9 mi) NE earthquakes near Sabana Grande Municipio
Cabo Rojo Municipio, PR 15 km (10 mi) W earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 19 km (12 mi) NNW earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 1.9 5 km ESE of Las Marías, Puerto Rico
  2. 2.4 3 km ESE of Las Marías, Puerto Rico
  3. 2.4 1 km NNW of La Playa, Puerto Rico
  4. 2.2 29 km SW of Stella, Puerto Rico
  5. 1.9 8 km SSE of Indios, Puerto Rico
  6. 2.4 2 km SSW of Sabana Grande, Puerto Rico
  7. 2.4 7 km NW of Santo Domingo, Puerto Rico
  8. 1.5 17 km WNW of Puerto Real, Puerto Rico
  9. 1.8 2 km NE of Boquerón, Puerto Rico
  10. 1.9 4 km SSW of Liborio Negron Torres, Puerto Rico
  11. 2.3 17 km S of Tallaboa, Puerto Rico
  12. 1.7 4 km SW of Maricao, Puerto Rico
  13. 1.7 13 km SSE of Guánica, Puerto Rico
  14. 2.1 21 km SW of Stella, Puerto Rico
  15. 1.9 14 km SSW 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.