QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

Earthquake near Mayagüez, PR

No earthquake was likely felt in Mayagüez in the 24 hours to 3:22 pm AST (19:22 UTC). The last one was M 2.9, 25 km (15 mi) SSE, at 3:17 am AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Mayagüez

This page: a magnitude 2.6 earthquake was recorded 28 km (18 mi) south-southeast of Mayagüez, PR, at 10:22 am AST on 6 July 2023 (14:22 UTC), 6.9 km deep.

USGS: Puerto Rico region

28 km (18 mi) SSE of Mayagüez, PR · 119 km (74 mi) WSW of San Juan, PR

10:22 am AST, Jul 6, 2023 · · 6.9 km deep · released about 280 lb of TNT

Every earthquake near Mayagüez Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lajas Municipio 5 kmCabo Rojo Municipio 12 kmGuánica Municipio 17 kmSan Germán Municipio 18 kmSabana Grande Municipio 20 kmHormigueros Municipio 21 kmYauco Municipio 28 kmMaricao Municipio 29 kmGuayanilla Municipio 31 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
10:22 am AST on 6 July 2023 ()
Where
28 km (18 mi) south-southeast of Mayagüez, PR · earthquakes near Mayagüez
Magnitude
M 2.6 (md)
Depth
6.9 km below the surface
Felt
no reports yet
Nearest
Lajas Municipio, 5 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1224 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 23 km (14 mi) from the epicentre. In Mayagüez, 28 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: Pole Ojea 11 km, intensity II · San Germán 15 km, intensity II · Puerto Real 18 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 280 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 55,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 39,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.5× the energy of this one
  4. This earthquake M 2.6 about 280 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 6.4 on 2020-01-07 — about 440,000 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 17.9527, -67.0813. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lajas Municipio, PR 5 km (3 mi) ENE earthquakes near Lajas Municipio
Cabo Rojo Municipio, PR 12 km (7 mi) WNW earthquakes near Cabo Rojo Municipio
Guánica Municipio, PR 17 km (10 mi) E earthquakes near Guánica Municipio
San Germán Municipio, PR 18 km (11 mi) NNE earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 20 km (13 mi) NE earthquakes near Sabana Grande Municipio
Hormigueros Municipio, PR 21 km (13 mi) N earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 2.6 10 km SSW of Guánica, Puerto Rico
  2. 2.0 8 km ESE of Adjuntas, Puerto Rico
  3. 2.2 18 km SSW of Gu?nica, Puerto Rico
  4. 2.1 6 km WSW of Gu?nica, Puerto Rico
  5. 2.5 0 km SSE of Guayanilla, Puerto Rico
  6. 2.3 0 km SSE of Guánica, Puerto Rico
  7. 2.8 Puerto Rico region
  8. 2.6 2 km ESE of Lluveras, Puerto Rico
  9. 2.7 21 km S of Indios, Puerto Rico
  10. 2.1 5 km SE of Maria Antonia, Puerto Rico
  11. 2.8 5 km W of Boquerón, Puerto Rico
  12. 2.7 1 km N of Indios, Puerto Rico
  13. 2.0 3 km ESE of Maria Antonia, Puerto Rico
  14. 2.5 3 km ESE of Maria Antonia, Puerto Rico
  15. 2.1 Puerto Rico region

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.