QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

Earthquake near Guayanilla, PR

No earthquake was likely felt in Guayanilla in the 24 hours to 3:33 pm AST (19:33 UTC). The last one was M 2.1, in Guayanilla, at 4:39 pm AST on 9 November 2026, estimated intensity II (weak) in town. Every earthquake near Guayanilla

This page: a magnitude 1.5 earthquake was recorded 3 km (2 mi) north-northeast of Guayanilla, PR, at 10:43 pm AST on 7 February 2019 (02:43 UTC), 8.0 km deep.

USGS: Puerto Rico region

18 km (11 mi) WNW of Ponce, PR

10:43 pm AST, Feb 7, 2019 · · 8.0 km deep · released about 5.6 lb of TNT

Every earthquake near Guayanilla Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guayanilla Municipio 4 kmPeñuelas Municipio 6 kmYauco Municipio 9 kmAdjuntas Municipio 16 kmSabana Grande Municipio 18 kmGuánica Municipio 18 kmPonce Municipio 20 kmMaricao Municipio 22 kmUtuado Municipio 27 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
10:43 pm AST on 7 February 2019 ()
Where
3 km (2 mi) north-northeast of Guayanilla, PR · earthquakes near Guayanilla
Magnitude
M 1.5 (md)
Depth
8.0 km below the surface
Felt
no reports yet
Nearest
Guayanilla Municipio, 4 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2834 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 6 km (4 mi) from the epicentre. In Guayanilla, 3 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: Guayanilla 3 km, intensity II · Magas Arriba 3 km, intensity II. Estimated for each town centre; each link is that town's own record.

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.

Where

Epicentre 18.0420, -66.7863. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guayanilla Municipio, PR 4 km (3 mi) SSW earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 6 km (4 mi) ESE earthquakes near Peñuelas Municipio
Yauco Municipio, PR 9 km (6 mi) WNW earthquakes near Yauco Municipio
Adjuntas Municipio, PR 16 km (10 mi) N earthquakes near Adjuntas Municipio
Sabana Grande Municipio, PR 18 km (11 mi) WNW earthquakes near Sabana Grande Municipio
Guánica Municipio, PR 18 km (11 mi) SW earthquakes near Guánica Municipio

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

Aftershocks so far

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

  1. 2.2 1 km NNW of Mayagüez, Puerto Rico
  2. 1.7 2 km SSW of Tallaboa Alta, Puerto Rico
  3. 2.1 3 km S of Las Marías, Puerto Rico
  4. 2.0 5 km SW of San Antonio, Puerto Rico
  5. 2.0 5 km NE of La Parguera, Puerto Rico
  6. 2.1 17 km S of Indios, Puerto Rico
  7. 2.2 20 km SSE of Indios, Puerto Rico
  8. 2.5 16 km S of Indios, Puerto Rico
  9. 2.5 Puerto Rico region
  10. 2.7 0 km NW of Maricao, Puerto Rico
  11. 1.9 1 km SE of Maricao, Puerto Rico
  12. 2.5 0 km WSW of Maricao, Puerto Rico
  13. 2.0 5 km NNE of Ponce, Puerto Rico
  14. 1.9 4 km N of Ponce, Puerto Rico
  15. 2.0 10 km SSE of La Parguera, 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

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