QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

Earthquake near Lamboglia, PR

No earthquake was likely felt in Lamboglia in the 24 hours to 10:16 am AST (14:16 UTC). The last one was M 3.3, 47 km (29 mi) WSW, at 8:40 am AST on 1 November 2026, estimated intensity II (weak) in town. Every earthquake near Lamboglia

This page: a magnitude 2.5 earthquake was recorded 18 km (11 mi) south-southeast of Lamboglia, PR, at 5:08 am AST on 7 March 2023 (09:08 UTC), 7.3 km deep.

USGS: 17 km SSE of Lamboglia, Puerto Rico

65 km (40 mi) SSE of San Juan, PR · 46 km (28 mi) SSE of Caguas, PR

5:08 am AST, Mar 7, 2023 · · 7.3 km deep · released about 150 lb of TNT

Every earthquake near Lamboglia Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Maunabo Municipio 18 kmPatillas Municipio 20 kmArroyo Municipio 20 kmYabucoa Municipio 26 kmGuayama Municipio 28 kmSan Lorenzo Municipio 35 kmHumacao Municipio 36 kmCayey Municipio 39 kmLas Piedras Municipio 39 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
5:08 am AST on 7 March 2023 ()
Where
18 km (11 mi) south-southeast of Lamboglia, PR · earthquakes near Lamboglia
Magnitude
M 2.5 (md)
Depth
7.3 km below the surface
Felt
no reports yet
Nearest
Maunabo Municipio, 18 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1345 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 21 km (13 mi) from the epicentre. In Lamboglia, 18 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: Emajagua 19 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 150 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 72,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.5× the energy of this one
  4. This earthquake M 2.5 about 150 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 1,600 times the energy of this one.

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 17.8362, -65.9177. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Maunabo Municipio, PR 18 km (11 mi) N earthquakes near Maunabo Municipio
Patillas Municipio, PR 20 km (12 mi) NNW earthquakes near Patillas Municipio
Arroyo Municipio, PR 20 km (12 mi) NW earthquakes near Arroyo Municipio
Yabucoa Municipio, PR 26 km (16 mi) NNE earthquakes near Yabucoa Municipio
Guayama Municipio, PR 28 km (17 mi) WNW earthquakes near Guayama Municipio
San Lorenzo Municipio, PR 35 km (22 mi) N earthquakes near San Lorenzo Municipio

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

Aftershocks so far

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

  1. 3.0 1 km E of Jagual, Puerto Rico
  2. 2.4 23 km SSE of Arroyo, Puerto Rico
  3. 2.7 2 km E of Santa Clara, Puerto Rico
  4. 3.0 1 km ENE of Bayamon, Puerto Rico
  5. 2.2 12 km SSE of Arroyo, Puerto Rico
  6. 2.8 24 km ESE of El Negro, Puerto Rico
  7. 3.2 1 km NE of Bajandas, Puerto Rico
  8. 2.0 1 km NE of La Plena, Puerto Rico
  9. 3.0 3 km NE of La Plena, Puerto Rico
  10. 3.1 2 km SW of Santa Clara, Puerto Rico
  11. 2.4 3 km ESE of Salinas, Puerto Rico
  12. 2.8 3 km ESE of Jauca, Puerto Rico
  13. 2.5 9 km SE of El Negro, Puerto Rico
  14. 2.5 13 km S of Jobos, Puerto Rico
  15. 2.8 4 km SE of G. L. Garcia, 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.