QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

Earthquake near Comunas, PR

Yes: an earthquake was likely felt in Comunas in the last 24 hours. M 2.9, 29 km (18 mi) SSE of Comunas, at 5:20 pm AST on 11 November 2026 (21:20 UTC); the estimated shaking in Comunas was intensity II (weak). 1 person has reported feeling it to USGS. Every earthquake near Comunas

This page: a magnitude 2.0 earthquake was recorded in Comunas, PR, at 9:11 am AST on 23 June 2017 (13:11 UTC), 5.0 km deep.

USGS: 0 km SE of Comunas, Puerto Rico

43 km (27 mi) SSE of San Juan, PR · 27 km (17 mi) SE of Caguas, PR

9:11 am AST, Jun 23, 2017 · · 5.0 km deep · released about 36 lb of TNT

Every earthquake near Comunas Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yabucoa Municipio 3 kmHumacao Municipio 8 kmMaunabo Municipio 11 kmLas Piedras Municipio 12 kmSan Lorenzo Municipio 16 kmJuncos Municipio 17 kmNaguabo Municipio 18 kmPatillas Municipio 18 kmArroyo Municipio 25 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
9:11 am AST on 23 June 2017 ()
Where
in Comunas, PR · earthquakes near Comunas
Magnitude
M 2.0 (md)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Yabucoa Municipio, 3 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3427 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 16 km (10 mi) from the epicentre. 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: Humacao 7 km, intensity II · Emajagua 10 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 36 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 5.8 420,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 300,000× the energy of this one
  3. Around the size people start to feel M 3.0 27× the energy of this one
  4. This earthquake M 2.0 about 36 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 6,700 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 · 37 km WNW 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 18.0843, -65.8396. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Yabucoa Municipio, PR 3 km (2 mi) SW earthquakes near Yabucoa Municipio
Humacao Municipio, PR 8 km (5 mi) NE earthquakes near Humacao Municipio
Maunabo Municipio, PR 11 km (7 mi) SSW earthquakes near Maunabo Municipio
Las Piedras Municipio, PR 12 km (7 mi) NNW earthquakes near Las Piedras Municipio
San Lorenzo Municipio, PR 16 km (10 mi) WNW earthquakes near San Lorenzo Municipio
Juncos Municipio, PR 17 km (11 mi) NNW earthquakes near Juncos Municipio

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

Aftershocks so far

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

  1. 2.4 2 km W of Aibonito, Puerto Rico
  2. 2.0 16 km W of Culebra, Puerto Rico
  3. 2.6 15 km S of Esperanza, Puerto Rico
  4. 2.7 7 km NW of Sumidero, Puerto Rico
  5. 2.4 4 km SE of Salinas, Puerto Rico
  6. 3.0 4 km SE of Salinas, Puerto Rico
  7. 2.4 3 km S of Coco, Puerto Rico
  8. 2.1 16 km S of Esperanza, Puerto Rico
  9. 2.4 10 km SE of Esperanza, Puerto Rico
  10. 2.8 15 km SSE of Esperanza, Puerto Rico
  11. 1.9 3 km SE of Salinas, Puerto Rico
  12. 3.2 Puerto Rico region
  13. 2.9 16 km SSE of Esperanza, Puerto Rico
  14. 1.9 21 km WSW of Esperanza, Puerto Rico
  15. 3.1 22 km SE of El Negro, 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.