QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

Earthquake near Bayamón, PR

No earthquake was likely felt in Bayamón in the 24 hours to 1:35 pm AST (17:35 UTC). The last one was M 4.8, 98 km (61 mi) WSW, at 9:19 am AST on 18 September 2026, estimated intensity III (weak) in town; 86 felt reports to USGS. Every earthquake near Bayamón

This page: a magnitude 2.0 earthquake was recorded 23 km (14 mi) south-southeast of Bayamón, PR, at 2:24 am AST on 13 July 2018 (06:24 UTC), 36 km deep.

USGS: 1 km N of Bayamon, Puerto Rico

9 km (5 mi) WSW of Caguas, PR

2:24 am AST, Jul 13, 2018 · · 36 km deep · released about 33 lb of TNT

Every earthquake near Bayamón Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cidra Municipio 6 kmCaguas Municipio 7 kmAguas Buenas Municipio 7 kmCayey Municipio 11 kmComerío Municipio 12 kmSan Lorenzo Municipio 15 kmGurabo Municipio 16 kmGuaynabo Municipio 17 kmAibonito Municipio 18 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
2:24 am AST on 13 July 2018 ()
Where
23 km (14 mi) south-southeast of Bayamón, PR · earthquakes near Bayamón
Magnitude
M 2.0 (md)
Depth
36 km below the surface
Felt
no reports yet
Nearest
Cidra Municipio, 6 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3043 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 Bayamón, 23 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: Santa Clara, Sumidero, Cidra, Aguas Buenas, G. L. Garcia, Caguas.

How big was it?

This earthquake released about 33 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 450,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 320,000× the energy of this one
  3. Around the size people start to feel M 3.0 29× the energy of this one
  4. This earthquake M 2.0 about 33 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 7,200 times the energy of this one.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 5.1 3 km W of Aguas Buenas, Puerto Rico · 8 km NNW of this epicentre
  2. 5.0 3 km N of Brenas, Puerto Rico · 42 km NW 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 18.1936, -66.1106. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Cidra Municipio, PR 6 km (4 mi) WSW earthquakes near Cidra Municipio
Caguas Municipio, PR 7 km (4 mi) ENE earthquakes near Caguas Municipio
Aguas Buenas Municipio, PR 7 km (5 mi) NNW earthquakes near Aguas Buenas Municipio
Cayey Municipio, PR 11 km (7 mi) SSW earthquakes near Cayey Municipio
Comerío Municipio, PR 12 km (7 mi) WNW earthquakes near Comerío Municipio
San Lorenzo Municipio, PR 15 km (9 mi) ESE earthquakes near San Lorenzo Municipio

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

Aftershocks so far

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

  1. 2.0 0 km NW of Playita Cortada, Puerto Rico
  2. 2.2 1 km ESE of Potala Pastillo, Puerto Rico
  3. 2.1 3 km ESE of Cayey, Puerto Rico
  4. 2.7 6 km NW of Sabana, Puerto Rico
  5. 2.4 2 km SSE of Cidra, Puerto Rico
  6. 2.5 17 km SSE of Jobos, Puerto Rico
  7. 2.5 3 km WSW of Sumidero, Puerto Rico
  8. 1.5 3 km W of Palo Seco, Puerto Rico
  9. 2.5 8 km NNE of Brenas, Puerto Rico
  10. 1.6 9 km S of Emajagua, Puerto Rico
  11. 2.1 8 km S of Emajagua, Puerto Rico
  12. 2.1 0 km NE of Ciales, Puerto Rico
  13. 2.2 2 km ESE of Parcelas Nuevas, Puerto Rico
  14. 2.3 1 km WSW of Campo Rico, Puerto Rico
  15. 1.9 5 km SW of Playita Cortada, 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.