QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

Earthquake near Tallaboa, PR

No earthquake was likely felt in Tallaboa in the 24 hours to 12:52 pm AST (16:52 UTC). The last one was M 2.1, 9 km (5 mi) WNW, at 4:39 pm AST on 9 November 2026, estimated intensity II (weak) in town. Every earthquake near Tallaboa

This page: a magnitude 3.0 earthquake was recorded 11 km (7 mi) south-southwest of Tallaboa, PR, at 7:25 am AST on 15 July 2018 (11:25 UTC), 33 km deep. 2 people have reported feeling it to USGS.

USGS: 10 km SSW of Tallaboa, Puerto Rico

17 km (11 mi) SW of Ponce, PR

7:25 am AST, Jul 15, 2018 · · 33 km deep · released about 890 lb of TNT

Every earthquake near Tallaboa Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guayanilla Municipio 12 kmPeñuelas Municipio 14 kmPonce Municipio 19 kmGuánica Municipio 19 kmYauco Municipio 23 kmSabana Grande Municipio 29 kmJuana Díaz Municipio 29 kmAdjuntas Municipio 31 kmLajas Municipio 32 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
7:25 am AST on 15 July 2018 ()
Where
11 km (7 mi) south-southwest of Tallaboa, PR · earthquakes near Tallaboa
Magnitude
M 3.0 (md)
Depth
33 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Guayanilla Municipio, 12 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2962 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 14 km (9 mi) from the epicentre. In Tallaboa, 11 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: Tallaboa 11 km, intensity II · Magas Arriba 13 km, intensity II · Guayanilla 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 890 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 380,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 17,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 12,000× the energy of this one
  4. This earthquake M 3.0 about 890 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 since 1900 lists no earthquake of M5 or more within 50 km.

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 17.9056, -66.7498. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guayanilla Municipio, PR 12 km (8 mi) NNW earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 14 km (8 mi) N earthquakes near Peñuelas Municipio
Ponce Municipio, PR 19 km (12 mi) NE earthquakes near Ponce Municipio
Guánica Municipio, PR 19 km (12 mi) WNW earthquakes near Guánica Municipio
Yauco Municipio, PR 23 km (14 mi) NNW earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 29 km (18 mi) NW earthquakes near Sabana Grande Municipio

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

Aftershocks so far

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

  1. 1.6 2 km E of Maria Antonia, Puerto Rico
  2. 2.0 1 km W of Guayabal, Puerto Rico
  3. 1.8 0 km ESE of La Parguera, Puerto Rico
  4. 1.9 4 km WSW of Las Marías, Puerto Rico
  5. 1.6 Puerto Rico region
  6. 2.1 7 km SW of Tallaboa, Puerto Rico
  7. 2.0 2 km S of Pole Ojea, Puerto Rico
  8. 1.7 3 km SE of Guánica, Puerto Rico
  9. 1.7 12 km W of Adjuntas, Puerto Rico
  10. 2.1 2 km E of Juana Díaz, Puerto Rico
  11. 1.8 14 km S of Guánica, Puerto Rico
  12. 2.3 3 km W of Pole Ojea, Puerto Rico
  13. 2.4 4 km SSE of Lajas, Puerto Rico
  14. 1.6 4 km E of Tallaboa Alta, Puerto Rico
  15. 1.5 4 km SSW of Liborio Negron Torres, 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.