QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

Earthquake near Las Ollas, PR

No earthquake was likely felt in Las Ollas in the 24 hours to 2:30 am AST (06:30 UTC). The last one was M 2.2, 8 km (5 mi) ENE, at 5:05 pm AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Las Ollas

This page: a magnitude 1.7 earthquake was recorded 4 km (2 mi) north-northwest of Las Ollas, PR, at 1:13 pm AST on 23 February 2026 (17:13 UTC), 5.0 km deep.

USGS: 2 km NW of Las Ollas, Puerto Rico

20 km (12 mi) ENE of Ponce, PR

1:13 pm AST, Feb 23, 2026 · · 5.0 km deep · released about 11 lb of TNT

Every earthquake near Las Ollas Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Juana Díaz Municipio 7 kmVillalba Municipio 10 kmCoamo Municipio 11 kmSanta Isabel Municipio 11 kmPonce Municipio 18 kmOrocovis Municipio 20 kmSalinas Municipio 20 kmAibonito Municipio 21 kmBarranquitas 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
1:13 pm AST on 23 February 2026 ()
Where
4 km (2 mi) north-northwest of Las Ollas, PR · earthquakes near Las Ollas
Magnitude
M 1.7 (md)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Juana Díaz Municipio, 7 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 262 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 12 km (7 mi) from the epicentre. In Las Ollas, 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: Río Cañas Abajo 3 km, intensity II · Santa Isabel 9 km, intensity II · Coamo 10 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 930,000× the energy of this one
  3. Around the size people start to feel M 3.0 83× the energy of this one
  4. This earthquake M 1.7 about 11 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 6.4 on 2020-01-07 — about 10,000,000 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 · 40 km NE 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 18.0433, -66.4400. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Juana Díaz Municipio, PR 7 km (5 mi) SW earthquakes near Juana Díaz Municipio
Villalba Municipio, PR 10 km (6 mi) NNW earthquakes near Villalba Municipio
Coamo Municipio, PR 11 km (7 mi) NE earthquakes near Coamo Municipio
Santa Isabel Municipio, PR 11 km (7 mi) SSE earthquakes near Santa Isabel Municipio
Ponce Municipio, PR 18 km (11 mi) WSW earthquakes near Ponce Municipio
Orocovis Municipio, PR 20 km (12 mi) N earthquakes near Orocovis Municipio

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

Aftershocks so far

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

  1. 2.1 2 km SSE of Santo Domingo, Puerto Rico
  2. 2.1 3 km NNW of Palomas, Puerto Rico
  3. 2.3 4 km NE of Yauco, Puerto Rico
  4. 2.3 3 km NNW of Guayanilla, Puerto Rico
  5. 1.9 3 km ENE of Yauco, Puerto Rico
  6. 1.8 2 km NNW of Guayanilla, Puerto Rico
  7. 1.9 3 km NNW of Guayanilla, Puerto Rico
  8. 3.5 3 km NW of Guayanilla, Puerto Rico
  9. 2.1 2 km SW of Indios, Puerto Rico
  10. 2.3 5 km SE of Indios, Puerto Rico
  11. 2.0 1 km SSE of Indios, Puerto Rico
  12. 2.2 1 km WSW of Indios, Puerto Rico
  13. 1.8 2 km W of Indios, Puerto Rico
  14. 2.1 2 km SW of Indios, Puerto Rico
  15. 2.1 1 km WSW of Indios, 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.