QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

Earthquake near La Plena, PR

No earthquake was likely felt in La Plena in the 24 hours to 10:12 am AST (14:12 UTC). The last one was M 3.0, 31 km (19 mi) SW, at 7:09 pm AST on 5 November 2026, estimated intensity II (weak) in town. Every earthquake near La Plena

This page: a magnitude 1.9 earthquake was recorded 4 km (3 mi) east-northeast of La Plena, PR, at 9:13 am AST on 9 July 2026 (13:13 UTC), 13 km deep.

USGS: 4 km ENE of La Plena, Puerto Rico

40 km (25 mi) SSW of San Juan, PR · 24 km (15 mi) SW of Caguas, PR

9:13 am AST, Jul 9, 2026 · · 13 km deep · released about 25 lb of TNT

Every earthquake near La Plena Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cayey Municipio 5 kmGuayama Municipio 10 kmCidra Municipio 13 kmAibonito Municipio 13 kmSalinas Municipio 14 kmArroyo Municipio 17 kmComerío Municipio 19 kmPatillas Municipio 20 kmCoamo Municipio 20 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
9:13 am AST on 9 July 2026 ()
Where
4 km (3 mi) east-northeast of La Plena, PR · earthquakes near La Plena
Magnitude
M 1.9 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Cayey Municipio, 5 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 125 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 7 km (4 mi) from the epicentre. In La Plena, 4 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: Cayey 6 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 25 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 5.8 620,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 440,000× the energy of this one
  3. Around the size people start to feel M 3.0 39× the energy of this one
  4. This earthquake M 1.9 about 25 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

The largest earthquake within 50 km since 2016 was M 4.6 on 2016-12-05 — about 9,800 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.1 3 km W of Aguas Buenas, Puerto Rico · 22 km N 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 18.0605, -66.1693. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Cayey Municipio, PR 5 km (3 mi) NNE earthquakes near Cayey Municipio
Guayama Municipio, PR 10 km (6 mi) SSE earthquakes near Guayama Municipio
Cidra Municipio, PR 13 km (8 mi) N earthquakes near Cidra Municipio
Aibonito Municipio, PR 13 km (8 mi) NW earthquakes near Aibonito Municipio
Salinas Municipio, PR 14 km (9 mi) SW earthquakes near Salinas Municipio
Arroyo Municipio, PR 17 km (10 mi) SE earthquakes near Arroyo 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. 1.9 2 km NNW of Aibonito, Puerto Rico
  2. 2.2 6 km SSE of Ponce, Puerto Rico
  3. 2.7 7 km SSE of Ponce, Puerto Rico
  4. 2.4 6 km SSE of Ponce, Puerto Rico
  5. 2.4 7 km SSE of Ponce, Puerto Rico
  6. 2.3 7 km SSE of Ponce, Puerto Rico
  7. 2.3 7 km SSE of Ponce, Puerto Rico
  8. 2.3 21 km SSW of Potala Pastillo, Puerto Rico
  9. 2.2 7 km SSE of Ponce, Puerto Rico
  10. 2.0 6 km SSE of Ponce, Puerto Rico
  11. 3.1 7 km NNW of Trujillo Alto, Puerto Rico
  12. 2.1 4 km NW of Orocovis, Puerto Rico
  13. 3.4 2 km NW of Corozal, Puerto Rico
  14. 2.6 4 km NNE of Aguas Buenas, Puerto Rico
  15. 2.6 3 km SE of Galateo, 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.