QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1Md

Earthquake near Esperanza, PR

No earthquake was likely felt in Esperanza in the 24 hours to 6:01 pm AST (22:01 UTC). The last one was M 2.9, 23 km (14 mi) SE, at 12:08 pm AST on 29 October 2026, estimated intensity II (weak) in town. Every earthquake near Esperanza

This page: a magnitude 2.1 earthquake was recorded 27 km (17 mi) south-southwest of Esperanza, PR, at 10:21 am AST on 7 February 2017 (14:21 UTC), 16 km deep.

USGS: 27 km SSW of Esperanza, Puerto Rico

75 km (47 mi) SE of San Juan, PR · 60 km (37 mi) SE of Caguas, PR

10:21 am AST, Feb 7, 2017 · · 16 km deep · released about 43 lb of TNT

Every earthquake near Esperanza Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Vieques Municipio 32 kmYabucoa Municipio 33 kmMaunabo Municipio 33 kmHumacao Municipio 33 kmNaguabo Municipio 38 kmCeiba Municipio 41 kmPatillas Municipio 42 kmLas Piedras Municipio 43 kmArroyo Municipio 47 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
10:21 am AST on 7 February 2017 ()
Where
27 km (17 mi) south-southwest of Esperanza, PR · earthquakes near Esperanza
Magnitude
M 2.1 (Md)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Vieques Municipio, 32 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3564 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 6 km (4 mi) from the epicentre. In Esperanza, 27 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.

How big was it?

This earthquake released about 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 43 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 5,600 times the energy of this one.

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 17.8882, -65.6061. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Vieques Municipio, PR 32 km (20 mi) NE earthquakes near Vieques Municipio
Yabucoa Municipio, PR 33 km (20 mi) NW earthquakes near Yabucoa Municipio
Maunabo Municipio, PR 33 km (21 mi) WNW earthquakes near Maunabo Municipio
Humacao Municipio, PR 33 km (21 mi) NW earthquakes near Humacao Municipio
Naguabo Municipio, PR 38 km (24 mi) NNW earthquakes near Naguabo Municipio
Ceiba Municipio, PR 41 km (25 mi) N earthquakes near Ceiba Municipio

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

Aftershocks so far

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

  1. 2.0 25 km SW of Esperanza, Puerto Rico
  2. 1.9 26 km ESE of El Negro, Puerto Rico
  3. 2.1 13 km SSW of Esperanza, Puerto Rico
  4. 2.0 29 km SW of Esperanza, Puerto Rico
  5. 3.0 32 km SE of Emajagua, Puerto Rico
  6. 1.7 3 km WNW of Candelero Arriba, Puerto Rico
  7. 2.2 11 km S of Emajagua, Puerto Rico
  8. 2.4 11 km SSE of Emajagua, Puerto Rico
  9. 2.3 21 km S of Esperanza, Puerto Rico
  10. 2.0 10 km SSE of Esperanza, Puerto Rico
  11. 2.3 28 km SW of Esperanza, Puerto Rico
  12. 1.8 16 km S of Esperanza, Puerto Rico
  13. 2.7 6 km E of Isabel Segunda, Puerto Rico
  14. 2.5 10 km S of Emajagua, Puerto Rico
  15. 2.4 9 km S of Emajagua, 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.