QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

122 km NNW of San Antonio, Puerto Rico

· 39 km deep · released about 990 lb of TNT

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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
Magnitude
M 3.0 (md)
Depth
39 km below the surface
Felt
no reports yet
Nearest
Aguadilla Municipio, 122 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2573 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 990 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 340,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 15,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 990 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.

Where

Epicentre 19.4573, -67.6665. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aguadilla Municipio, PR 122 km (76 mi) NNW of here earthquakes near Aguadilla Municipio
Isabela Municipio, PR 128 km (80 mi) NNW of here earthquakes near Isabela Municipio
Quebradillas Municipio, PR 135 km (84 mi) NW of here earthquakes near Quebradillas Municipio
Camuy Municipio, PR 141 km (87 mi) NW of here earthquakes near Camuy Municipio
Hatillo Municipio, PR 145 km (90 mi) NW of here earthquakes near Hatillo Municipio
Arecibo Municipio, PR 154 km (96 mi) NW of here earthquakes near Arecibo Municipio

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

Aftershocks so far

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

  1. 3.3 108 km NNE of Punta Cana, Dominican Republic
  2. 3.0 136 km NNE of Punta Cana, Dominican Republic
  3. 3.2 124 km NNE of Punta Cana, Dominican Republic
  4. 3.3 99 km NE of Punta Cana, Dominican Republic
  5. 2.9 88 km NNE of Punta Cana, Dominican Republic
  6. 2.6 82 km NNW of San Antonio, Puerto Rico
  7. 3.0 98 km NNE of Punta Cana, Dominican Republic
  8. 2.6 113 km NNE of Punta Cana, Dominican Republic
  9. 3.5 116 km NNE of Punta Cana, Dominican Republic
  10. 2.9 104 km NNE of Punta Cana, Dominican Republic
  11. 2.3 90 km NNE of Punta Cana, Dominican Republic
  12. 2.1 122 km NNE of Punta Cana, Dominican Republic
  13. 2.8 84 km NW of San Antonio, Puerto Rico
  14. 1.8 85 km NW of San Antonio, Puerto Rico
  15. 2.8 78 km NE of Punta Cana, Dominican Republic

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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.7 on 2018-12-07 — it released about 310 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.