QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

Earthquake near Indios, PR

Yes: an earthquake was likely felt in Indios in the last 24 hours. M 2.1, 3 km (2 mi) W of Indios, at 4:14 pm AST on 11 November 2026 (20:14 UTC); the estimated shaking in Indios was intensity II (weak). Every earthquake near Indios

This page: a magnitude 1.7 earthquake was recorded 5 km (3 mi) south-southeast of Indios, PR, at 1:27 pm AST on 22 July 2018 (17:27 UTC), 14 km deep.

USGS: 4 km SSE of Indios, Puerto Rico

20 km (12 mi) WSW of Ponce, PR

1:27 pm AST, Jul 22, 2018 · · 14 km deep · released about 9.6 lb of TNT

Every earthquake near Indios Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guayanilla Municipio 6 kmPeñuelas Municipio 11 kmGuánica Municipio 13 kmYauco Municipio 16 kmSabana Grande Municipio 21 kmPonce Municipio 21 kmLajas Municipio 25 kmAdjuntas Municipio 26 kmMaricao Municipio 28 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
1:27 pm AST on 22 July 2018 ()
Where
5 km (3 mi) south-southeast of Indios, PR · earthquakes near Indios
Magnitude
M 1.7 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Guayanilla Municipio, 6 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3034 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 Indios, 5 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: Guayanilla, Magas Arriba, Maria Antonia, Palomas, Yauco, Tallaboa.

How big was it?

This earthquake released about 9.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

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 17.9558, -66.8030. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guayanilla Municipio, PR 6 km (3 mi) N earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 11 km (7 mi) NE earthquakes near Peñuelas Municipio
Guánica Municipio, PR 13 km (8 mi) W earthquakes near Guánica Municipio
Yauco Municipio, PR 16 km (10 mi) NNW earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 21 km (13 mi) NW earthquakes near Sabana Grande Municipio
Ponce Municipio, PR 21 km (13 mi) ENE earthquakes near Ponce Municipio

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

Aftershocks so far

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

  1. 1.8 7 km W of Puerto Real, Puerto Rico
  2. 2.0 4 km WNW of Puerto Real, Puerto Rico
  3. 1.7 6 km SSE of Adjuntas, Puerto Rico
  4. 1.6 12 km S of La Parguera, Puerto Rico
  5. 1.7 2 km SE of Cabo Rojo, Puerto Rico
  6. 2.3 6 km SW of Las Marías, Puerto Rico
  7. 2.3 4 km NNE of La Parguera, Puerto Rico
  8. 1.9 7 km SSE of Ponce, Puerto Rico
  9. 1.8 4 km SSW of Guánica, Puerto Rico
  10. 2.1 4 km NNW of Santo Domingo, Puerto Rico
  11. 1.8 3 km SSE of Mayagüez, Puerto Rico
  12. 1.8 6 km W of Puerto Real, Puerto Rico
  13. 1.5 3 km NNW of Sabana Grande, Puerto Rico
  14. 1.8 7 km SSW of Guánica, Puerto Rico
  15. 1.6 4 km SSW of Palmarejo, 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.