QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

Earthquake near Maria Antonia, PR

No earthquake was likely felt in Maria Antonia in the 24 hours to 1:48 pm AST (17:48 UTC). The last one was M 2.1, 11 km (7 mi) ENE, at 4:39 pm AST on 9 November 2026, estimated intensity II (weak) in town. Every earthquake near Maria Antonia

This page: a magnitude 1.9 earthquake was recorded 4 km (3 mi) southeast of Maria Antonia, PR, at 4:05 am AST on 16 September 2022 (08:05 UTC), 18 km deep.

USGS: 4 km SE of Maria Antonia, Puerto Rico

25 km (16 mi) W of Ponce, PR

4:05 am AST, Sep 16, 2022 · · 18 km deep · released about 19 lb of TNT

Every earthquake near Maria Antonia Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 7 kmGuayanilla Municipio 8 kmYauco Municipio 14 kmPeñuelas Municipio 16 kmSabana Grande Municipio 17 kmLajas Municipio 20 kmSan Germán Municipio 26 kmMaricao Municipio 26 kmPonce Municipio 27 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
4:05 am AST on 16 September 2022 ()
Where
4 km (3 mi) southeast of Maria Antonia, PR · earthquakes near Maria Antonia
Magnitude
M 1.9 (md)
Depth
18 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 7 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1517 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 Maria Antonia, 4 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: Guánica, Indios, Palomas, Fuig, Yauco, Guayanilla.

How big was it?

This earthquake released about 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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 6,200,000 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 17.9557, -66.8565. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guánica Municipio, PR 7 km (4 mi) W earthquakes near Guánica Municipio
Guayanilla Municipio, PR 8 km (5 mi) NE earthquakes near Guayanilla Municipio
Yauco Municipio, PR 14 km (9 mi) N earthquakes near Yauco Municipio
Peñuelas Municipio, PR 16 km (10 mi) ENE earthquakes near Peñuelas Municipio
Sabana Grande Municipio, PR 17 km (11 mi) NW earthquakes near Sabana Grande Municipio
Lajas Municipio, PR 20 km (12 mi) W earthquakes near Lajas Municipio

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

Aftershocks so far

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

  1. 2.5 2 km SSW of Guánica, Puerto Rico
  2. 2.0 6 km SSW of Indios, Puerto Rico
  3. 2.3 6 km WSW of Adjuntas, Puerto Rico
  4. 1.8 4 km SW of Indios, Puerto Rico
  5. 2.4 Puerto Rico region
  6. 2.6 6 km E of La Parguera, Puerto Rico
  7. 2.3 Puerto Rico region
  8. 2.5 11 km S of Guánica, Puerto Rico
  9. 2.6 15 km S of Guánica, Puerto Rico
  10. 2.1 Puerto Rico region
  11. 2.6 4 km ESE of La Parguera, Puerto Rico
  12. 2.0 4 km ESE of La Parguera, Puerto Rico
  13. 2.6 Puerto Rico region
  14. 2.3 0 km S of Guánica, Puerto Rico
  15. 2.3 5 km WSW of Fuig, 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.