Earthquake · reviewed by a seismologist
M 3.6md
43 km W of Pole Ojea, Puerto Rico
- When
- Magnitude
- M 3.6 (md)
- Depth
- 10 km below the surface
- Felt
- no reports yet
- Nearest
- Mayagüez Municipio, 33 km WNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2140 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 4.1 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.6 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 42,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 1,900× the energy of this one
- Magna, Utah 2020 M 5.7 1,300× the energy of this one
- This earthquake M 3.6 about 4.1 tons of TNT
- Around the size people start to feel M 3.0 this one released 8.5× more
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 17.9668, -67.5980. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Mayagüez Municipio, PR | 33 km (21 mi) | ESE of here | earthquakes near Mayagüez Municipio |
| Cabo Rojo Municipio, PR | 44 km (27 mi) | W of here | earthquakes near Cabo Rojo Municipio |
| Hormigueros Municipio, PR | 54 km (34 mi) | WSW of here | earthquakes near Hormigueros Municipio |
| Rincón Municipio, PR | 55 km (34 mi) | SW of here | earthquakes near Rincón Municipio |
| Lajas Municipio, PR | 59 km (37 mi) | W of here | earthquakes near Lajas Municipio |
| Añasco Municipio, PR | 61 km (38 mi) | SW of here | earthquakes near Añasco Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
3 earthquakes have been recorded within 50 km since this one.
- 2.6 51 km WSW of Stella, Puerto Rico
- 2.3 10 km NW of Puerto Real, Puerto Rico
- 2.5 14 km S of Pole Ojea, 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.
For this area
The largest earthquake within 50 km in our catalogue was M 4.3 on 2019-09-05 — it released about 10 times the energy of this one.
From the QuakeIndex catalogue, built from the USGS FDSN event service.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.