QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

Earthquake near G. L. Garcia, PR

No earthquake was likely felt in G. L. Garcia in the 24 hours to 8:03 pm AST (00:03 UTC). The last one was M 3.3, 44 km (27 mi) SW, at 8:40 am AST on 1 November 2026, estimated intensity II (weak) in town. Every earthquake near G. L. Garcia

This page: a magnitude 1.8 earthquake was recorded 7 km (4 mi) east-southeast of G. L. Garcia, PR, at 6:09 am AST on 28 February 2026 (10:09 UTC), 26 km deep.

USGS: 7 km ESE of G. L. Garcia, Puerto Rico

35 km (22 mi) S of San Juan, PR · 15 km (10 mi) S of Caguas, PR

6:09 am AST, Feb 28, 2026 · · 26 km deep · released about 16 lb of TNT

Every earthquake near G. L. Garcia Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Lorenzo Municipio 10 kmCayey Municipio 11 kmPatillas Municipio 12 kmCaguas Municipio 13 kmArroyo Municipio 14 kmCidra Municipio 15 kmGuayama Municipio 16 kmMaunabo Municipio 19 kmAguas Buenas 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
6:09 am AST on 28 February 2026 ()
Where
7 km (4 mi) east-southeast of G. L. Garcia, PR · earthquakes near G. L. Garcia
Magnitude
M 1.8 (md)
Depth
26 km below the surface
Felt
no reports yet
Nearest
San Lorenzo Municipio, 10 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 257 days ago

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

At this magnitude and depth it was probably too small to be felt, even directly above it. In G. L. Garcia, 7 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.

Earthquakes near other towns within 30 km: Yaurel, Jagual, Patillas, Buena Vista, Corazón, Olimpo.

How big was it?

This earthquake released about 16 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 970,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 680,000× the energy of this one
  3. Around the size people start to feel M 3.0 61× the energy of this one
  4. This earthquake M 1.8 about 16 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 15,000 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 · 21 km NNW 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 18.0935, -66.0477. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Lorenzo Municipio, PR 10 km (6 mi) NE earthquakes near San Lorenzo Municipio
Cayey Municipio, PR 11 km (7 mi) W earthquakes near Cayey Municipio
Patillas Municipio, PR 12 km (8 mi) SSE earthquakes near Patillas Municipio
Caguas Municipio, PR 13 km (8 mi) N earthquakes near Caguas Municipio
Arroyo Municipio, PR 14 km (8 mi) S earthquakes near Arroyo Municipio
Cidra Municipio, PR 15 km (9 mi) NW earthquakes near Cidra Municipio

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

Aftershocks so far

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

  1. 3.1 4 km N of San Juan, Puerto Rico
  2. 2.1 7 km S of Salinas, Puerto Rico
  3. 2.2 5 km ENE of Comerío, Puerto Rico
  4. 2.2 3 km SSW of Salinas, Puerto Rico
  5. 2.0 8 km S of Salinas, Puerto Rico
  6. 1.9 1 km E of Salinas, Puerto Rico
  7. 2.2 3 km W of Vázquez, Puerto Rico
  8. 1.9 6 km S of Salinas, Puerto Rico
  9. 2.1 6 km S of Salinas, Puerto Rico
  10. 1.9 11 km S of Emajagua, Puerto Rico
  11. 2.0 5 km SSE of Salinas, Puerto Rico
  12. 2.4 7 km S of Salinas, Puerto Rico
  13. 2.6 15 km WSW of Esperanza, Puerto Rico
  14. 2.1 7 km WSW of Naranjito, Puerto Rico
  15. 2.7 21 km SSE of Emajagua, 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.