QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

Earthquake near Indios, PR

No earthquake was likely felt in Indios in the 24 hours to 1:37 pm AST (17:37 UTC). The last one was M 2.0, 3 km (2 mi) SW, at 4:21 am AST on 10 November 2026, estimated intensity II (weak) in town. Every earthquake near Indios

This page: a magnitude 1.7 earthquake was recorded 9 km (6 mi) south of Indios, PR, at 5:46 am AST on 7 March 2018 (09:46 UTC), 17 km deep.

USGS: 9 km S of Indios, Puerto Rico

23 km (14 mi) WSW of Ponce, PR

5:46 am AST, Mar 7, 2018 · · 17 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 11 kmGuánica Municipio 12 kmPeñuelas Municipio 16 kmYauco Municipio 20 kmSabana Grande Municipio 24 kmPonce Municipio 25 kmLajas Municipio 25 kmAdjuntas Municipio 31 kmMaricao Municipio 32 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
5:46 am AST on 7 March 2018 ()
Where
9 km (6 mi) south of Indios, PR · earthquakes near Indios
Magnitude
M 1.7 (md)
Depth
17 km below the surface
Felt
no reports yet
Nearest
Guayanilla Municipio, 11 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3171 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, 9 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: Maria Antonia, Guánica, Guayanilla, Palomas, Magas Arriba, Fuig.

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 17.9090, -66.8181. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guayanilla Municipio, PR 11 km (7 mi) N earthquakes near Guayanilla Municipio
Guánica Municipio, PR 12 km (7 mi) WNW earthquakes near Guánica Municipio
Peñuelas Municipio, PR 16 km (10 mi) NE earthquakes near Peñuelas Municipio
Yauco Municipio, PR 20 km (12 mi) NNW earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 24 km (15 mi) NW earthquakes near Sabana Grande Municipio
Ponce Municipio, PR 25 km (15 mi) ENE earthquakes near Ponce Municipio

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

Aftershocks so far

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

  1. 2.4 3 km ESE of Las Marías, Puerto Rico
  2. 1.9 8 km SSE of Indios, Puerto Rico
  3. 2.4 2 km SSW of Sabana Grande, Puerto Rico
  4. 2.4 7 km NW of Santo Domingo, Puerto Rico
  5. 1.8 2 km NE of Boquerón, Puerto Rico
  6. 1.9 4 km SSW of Liborio Negron Torres, Puerto Rico
  7. 2.3 17 km S of Tallaboa, Puerto Rico
  8. 1.7 4 km SW of Maricao, Puerto Rico
  9. 3.2 13 km S of Potala Pastillo, Puerto Rico
  10. 1.7 13 km SSE of Guánica, Puerto Rico
  11. 1.9 14 km SSW of Guánica, Puerto Rico
  12. 2.4 1 km N of Guayanilla, Puerto Rico
  13. 2.3 2 km ESE of Las Marías, Puerto Rico
  14. 1.6 1 km SSW of Magas Arriba, Puerto Rico
  15. 2.3 5 km SSW of La Parguera, 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.