QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

Earthquake near Adjuntas, PR

No earthquake was likely felt in Adjuntas in the 24 hours to 4:45 pm AST (20:45 UTC). The last one was M 3.0, 31 km (19 mi) SSW, at 3:45 am AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Adjuntas

This page: a magnitude 2.0 earthquake was recorded 9 km (5 mi) west-southwest of Adjuntas, PR, at 6:36 am AST on 24 April 2018 (10:36 UTC), 10 km deep.

USGS: 8 km WSW of Adjuntas, Puerto Rico

23 km (14 mi) NW of Ponce, PR

6:36 am AST, Apr 24, 2018 · · 10 km deep · released about 33 lb of TNT

Every earthquake near Adjuntas Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Adjuntas Municipio 7 kmYauco Municipio 8 kmPeñuelas Municipio 14 kmGuayanilla Municipio 14 kmMaricao Municipio 15 kmSabana Grande Municipio 17 kmLares Municipio 18 kmUtuado Municipio 19 kmLas Marías Municipio 22 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
6:36 am AST on 24 April 2018 ()
Where
9 km (5 mi) west-southwest of Adjuntas, PR · earthquakes near Adjuntas
Magnitude
M 2.0 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Adjuntas Municipio, 7 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3123 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 13 km (8 mi) from the epicentre. In Adjuntas, 9 km away, the estimate is intensity II (weak). 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.

Likely felt in: Adjuntas 9 km, intensity II · Yauco 12 km, intensity II · Guayanilla 12 km, intensity II · Magas Arriba 13 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 33 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 450,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 320,000× the energy of this one
  3. Around the size people start to feel M 3.0 29× the energy of this one
  4. This earthquake M 2.0 about 33 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 one earthquake of M5 or more within 50 km:

  1. 5.8 4 km E of Moca, Puerto Rico · 42 km NW 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 18.1298, -66.7968. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Adjuntas Municipio, PR 7 km (4 mi) NE earthquakes near Adjuntas Municipio
Yauco Municipio, PR 8 km (5 mi) SW earthquakes near Yauco Municipio
Peñuelas Municipio, PR 14 km (8 mi) SSE earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 14 km (9 mi) S earthquakes near Guayanilla Municipio
Maricao Municipio, PR 15 km (10 mi) WNW earthquakes near Maricao Municipio
Sabana Grande Municipio, PR 17 km (10 mi) WSW earthquakes near Sabana Grande 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. 1.6 4 km WNW of Fuig, Puerto Rico
  2. 3.0 3 km SSW of Mayagüez, Puerto Rico
  3. 2.0 13 km N of Yauco, Puerto Rico
  4. 2.1 15 km SSE of Tallaboa, Puerto Rico
  5. 2.2 6 km S of Pole Ojea, Puerto Rico
  6. 1.5 3 km SSE of Palmarejo, Puerto Rico
  7. 2.0 11 km S of Pole Ojea, Puerto Rico
  8. 1.6 2 km WSW of Coamo, Puerto Rico
  9. 1.7 10 km SSE of La Parguera, Puerto Rico
  10. 1.6 0 km NNE of Boquerón, Puerto Rico
  11. 1.8 3 km NNW of Tallaboa, Puerto Rico
  12. 2.2 3 km ESE of Mayagüez, Puerto Rico
  13. 2.0 5 km SE of Maricao, Puerto Rico
  14. 1.9 Puerto Rico region
  15. 1.9 1 km NW of Pole Ojea, 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.