QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

Earthquake near Salinas, PR

No earthquake was likely felt in Salinas in the 24 hours to 10:40 am AST (14:40 UTC). The last one was M 2.2, 8 km (5 mi) NW, at 5:05 pm AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Salinas

This page: a magnitude 2.4 earthquake was recorded 4 km (3 mi) west-southwest of Salinas, PR, at 1:04 am AST on 5 March 2023 (05:04 UTC), 3.8 km deep.

USGS: Puerto Rico region

57 km (35 mi) SSW of San Juan, PR · 30 km (19 mi) E of Ponce, PR

1:04 am AST, Mar 5, 2023 · · 3.8 km deep · released about 130 lb of TNT

Every earthquake near Salinas Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Isabel Municipio 6 kmSalinas Municipio 8 kmCoamo Municipio 15 kmJuana Díaz Municipio 16 kmAibonito Municipio 20 kmGuayama Municipio 21 kmVillalba Municipio 23 kmCayey Municipio 25 kmBarranquitas Municipio 26 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
1:04 am AST on 5 March 2023 ()
Where
4 km (3 mi) west-southwest of Salinas, PR · earthquakes near Salinas
Magnitude
M 2.4 (md)
Depth
3.8 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 6 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1347 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 Salinas, 4 km away, the estimate is intensity III (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: Santa Isabel 7 km, intensity III · Coamo 13 km, intensity II · Río Cañas Abajo 16 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 130 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 110,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 80,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.2× the energy of this one
  4. This earthquake M 2.4 about 130 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 in our catalogue was M 5.6 on 2020-01-07 — about 57,000 times the energy of this one.

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 17.9678, -66.3380. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Santa Isabel Municipio, PR 6 km (3 mi) WSW earthquakes near Santa Isabel Municipio
Salinas Municipio, PR 8 km (5 mi) E earthquakes near Salinas Municipio
Coamo Municipio, PR 15 km (9 mi) N earthquakes near Coamo Municipio
Juana Díaz Municipio, PR 16 km (10 mi) WNW earthquakes near Juana Díaz Municipio
Aibonito Municipio, PR 20 km (12 mi) NNE earthquakes near Aibonito Municipio
Guayama Municipio, PR 21 km (13 mi) E earthquakes near Guayama Municipio

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

Aftershocks so far

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

  1. 2.4 3 km NNW of Tallaboa, Puerto Rico
  2. 2.6 6 km SSW of Lamboglia, Puerto Rico
  3. 2.5 11 km S of Santa Isabel, Puerto Rico
  4. 2.8 8 km SSE of Indios, Puerto Rico
  5. 2.0 3 km NW of Tallaboa, Puerto Rico
  6. 2.3 9 km SSE of Tallaboa, Puerto Rico
  7. 2.9 7 km S of Tallaboa, Puerto Rico
  8. 2.4 6 km S of Tallaboa, Puerto Rico
  9. 2.5 8 km SSW of Tallaboa, Puerto Rico
  10. 3.2 2 km SW of Tallaboa, Puerto Rico
  11. 2.8 20 km S of Tallaboa, Puerto Rico
  12. 2.5 3 km WSW of Central Aguirre, Puerto Rico
  13. 2.3 5 km SSE of Indios, Puerto Rico
  14. 2.3 4 km SSW of Adjuntas, Puerto Rico
  15. 2.5 17 km SSE of Lamboglia, 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.