Earthquake · reviewed by a seismologist
M 2.9md
86 km WSW of Pole Ojea, Puerto Rico
Yes. A magnitude 2.9 earthquake was recorded 86 km WSW of Pole Ojea, Puerto Rico, at 6:32 pm AST on 22 November 2017 (22:32 UTC), 104 km deep.
- When
- Magnitude
- M 2.9 (md)
- Depth
- 104 km below the surface
- Felt
- no reports yet
- Nearest
- Mayagüez Municipio, 37 km NNE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3193 days ago
Earthquake alerts for Pole Ojea, PR
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes 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.
How big was it?
This earthquake released about 720 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 21,000× the energy of this one
- Magna, Utah 2020 M 5.7 15,000× the energy of this one
- Around the size people start to feel M 3.0 1.3× the energy of this one
- This earthquake M 2.9 about 720 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 4.3 on 2017-07-18 — about 120 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 17.7621, -67.9743. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Mayagüez Municipio, PR | 37 km (23 mi) | NNE | earthquakes near Mayagüez Municipio |
| Cabo Rojo Municipio, PR | 88 km (55 mi) | ENE | earthquakes near Cabo Rojo Municipio |
| Hormigueros Municipio, PR | 100 km (62 mi) | ENE | earthquakes near Hormigueros Municipio |
| Rincón Municipio, PR | 100 km (62 mi) | NE | earthquakes near Rincón Municipio |
| Lajas Municipio, PR | 102 km (63 mi) | ENE | earthquakes near Lajas Municipio |
| San Germán Municipio, PR | 106 km (66 mi) | ENE | earthquakes near San Germán Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
30 earthquakes have been recorded within 50 km since this one.
- 2.4 88 km SE of Boca de Yuma, Dominican Republic
- 3.1 53 km W of Puerto Real, Puerto Rico
- 2.4 62 km SE of Boca de Yuma, Dominican Republic
- 3.2 59 km SE of Boca de Yuma, Dominican Republic
- 2.6 60 km SE of Boca de Yuma, Dominican Republic
- 3.0 61 km SE of Boca de Yuma, Dominican Republic
- 4.0 62 km SE of Boca de Yuma, Dominican Republic
- 3.2 65 km SE of Punta Cana, Dominican Republic
- 3.2 66 km SE of Boca de Yuma, Dominican Republic
- 2.8 69 km WSW of Stella, Puerto Rico
- 3.2 51 km ESE of Boca de Yuma, Dominican Republic
- 3.2 60 km SE of Punta Cana, Dominican Republic
- 2.6 58 km SSE of Boca de Yuma, Dominican Republic
- 2.5 67 km SE of Boca de Yuma, Dominican Republic
- 3.1 59 km WSW of Stella, 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
- 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.