QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

Earthquake near Fuig, PR

Yes: an earthquake was likely felt in Fuig in the last 24 hours. M 2.1, 7 km (4 mi) E of Fuig, at 4:14 pm AST on 11 November 2026 (20:14 UTC); the estimated shaking in Fuig was intensity II (weak). Every earthquake near Fuig

This page: a magnitude 1.8 earthquake was recorded in Fuig, PR, at 3:26 am AST on 12 January 2021 (07:26 UTC), 19 km deep.

USGS: 1 km NNE of Fuig, Puerto Rico

30 km (19 mi) W of Ponce, PR

3:26 am AST, Jan 12, 2021 · · 19 km deep · released about 17 lb of TNT

Every earthquake near Fuig Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 6 kmSabana Grande Municipio 10 kmYauco Municipio 11 kmGuayanilla Municipio 12 kmLajas Municipio 14 kmSan Germán Municipio 18 kmMaricao Municipio 19 kmPeñuelas Municipio 19 kmAdjuntas 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
3:26 am AST on 12 January 2021 ()
Where
in Fuig, PR · earthquakes near Fuig
Magnitude
M 1.8 (md)
Depth
19 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 6 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2025 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. 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, Lluveras, Palomas, Liborio Negron Torres, Yauco.

How big was it?

This earthquake released about 17 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 640,000× the energy of this one
  3. Around the size people start to feel M 3.0 57× the energy of this one
  4. This earthquake M 1.8 about 17 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 6.4 on 2020-01-07 — about 7,200,000 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.8 4 km E of Moca, Puerto Rico · 47 km NNW 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 18.0036, -66.9100. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guánica Municipio, PR 6 km (4 mi) SSW earthquakes near Guánica Municipio
Sabana Grande Municipio, PR 10 km (6 mi) NNW earthquakes near Sabana Grande Municipio
Yauco Municipio, PR 11 km (7 mi) NNE earthquakes near Yauco Municipio
Guayanilla Municipio, PR 12 km (7 mi) E earthquakes near Guayanilla Municipio
Lajas Municipio, PR 14 km (9 mi) WSW earthquakes near Lajas Municipio
San Germán Municipio, PR 18 km (11 mi) NW earthquakes near San Germán Municipio

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

Aftershocks so far

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

  1. 2.5 11 km SSE of Guánica, Puerto Rico
  2. 1.9 10 km SSW of Tallaboa, Puerto Rico
  3. 2.2 1 km SSE of Guánica, Puerto Rico
  4. 1.7 5 km SW of Guánica, Puerto Rico
  5. 1.5 3 km ESE of Maria Antonia, Puerto Rico
  6. 2.6 7 km ESE of Pole Ojea, Puerto Rico
  7. 1.8 2 km NW of Indios, Puerto Rico
  8. 1.7 3 km NE of La Parguera, Puerto Rico
  9. 1.6 1 km NNE of Lluveras, Puerto Rico
  10. 1.8 8 km S of Guánica, Puerto Rico
  11. 1.9 6 km SE of Maria Antonia, Puerto Rico
  12. 1.7 6 km S of Indios, Puerto Rico
  13. 2.2 5 km SE of Maria Antonia, Puerto Rico
  14. 2.0 1 km NNE of Maria Antonia, Puerto Rico
  15. 1.8 10 km S of Indios, 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.