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M3.2 earthquake 8 km WNW of Maricao, Puerto Rico

A magnitude 3.2 earthquake struck 8 km WNW of Maricao, Puerto Rico at 04:08 local time (08:08 UTC) on 7 Sept 2026, at a depth of 122 km, according to USGS.

1 reports to USGS “Did You Feel It?”

Data: USGS · updated 2026-09-07 14:45 UTC · reviewed

Magnitude
3.2minor
duration magnitude (md)
Depth
121.9 km
Status
Reviewed
Origin time
2026-09-07 08:08:04 UTC
Local: 7 Sept 2026, 04:08:04 (America/Puerto Rico)
Epicentre
18.202° N, 67.048° W

Circles show this event and others within 30 km from 7 days before to 30 days after. Lines: plate boundaries and GEM active faults. Open on the live map

Nearby places

Distance and estimated shaking at nearby places
PlaceDistanceEst. shaking
MaricaoPuerto Rico · pop. 1,1728 kmINot felt
Las MaríasPuerto Rico · pop. 1,0318 kmINot felt
MayagüezPuerto Rico · pop. 73,07710 kmINot felt
YaucoPuerto Rico · pop. 20,29528 kmINot felt
AreciboPuerto Rico · pop. 87,75446 kmINot felt
PoncePuerto Rico · pop. 137,49150 kmINot felt
San JuanPuerto Rico · pop. 418,140103 kmINot felt
Santo Domingo EsteSanto Domingo Province, Dominican Republic · pop. 700,000297 kmINot felt

Shaking is an estimate from the intensity prediction equation of Allen, Wald & Worden (2012), not an observation. Local ground and buildings can change it by a level or more.

Every agency's solution

Agencies locate earthquakes with their own stations and methods, so their numbers differ. We match reports of the same event by time, distance and magnitude and show them side by side. The headline uses USGS · PR, which has been reviewed by an analyst.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGS · PRheadlinePuerto Rico Seismic Network via U.S. Geological Survey3.2 md121.9 km18.20° N, 67.05° W–Reviewed

How big was it?

Often felt by people at rest close to the epicentre, rarely causes damage.

It released roughly the energy of 888 kg of TNT. Magnitude is logarithmic: each whole step means about 32 times more energy and 10 times larger waves on a seismogram. Depth matters too: at 122 km this was a intermediate-depth earthquake, which spreads shaking over a wider area but less intensely.

M3.2 releases about 30× the energy of M2.2, and its waves are about 9.5× taller on a seismogram. Energy: 888 kg of TNT vs 30 kg of TNT.

Each square is the energy of one M2.2. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

28 later earthquakes within 30 km; the largest was M3.4 10 days ago. 3 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M3.2

28 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
156.482.58
190.232.913
243.993.157
269.252.58
270.092.59
272.822.68
273.213.46
274.262.88
275.282.76
275.343.07
278.342.67
285.393.18
296.392.88
304.102.57
324.413.08
327.512.57
365.621.811
366.602.17
392.891.78
396.722.18
399.142.08
403.391.99
422.132.46
424.172.37
436.882.17
465.542.18
475.432.16
503.492.27
  1. 3.45 km W of Guánica, Puerto Rico09-18 17:20
  2. 3.15 km W of Guánica, Puerto Rico09-19 05:31
  3. 3.19 km NW of Puerto Real, Cabo Rojo, Puerto Rico09-17 12:07
  4. 3.05 km WSW of Guánica, Puerto Rico09-18 19:28
  5. 3.05 km WSW of Guánica, Puerto Rico09-20 20:32
  6. 2.99 km W of Guánica, Puerto Rico09-15 06:21
  7. 2.84 km WSW of Guánica, Puerto Rico09-18 18:23
  8. 2.8Near Guánica, Puerto Rico09-19 16:31
  9. 2.75 km W of Guánica, Puerto Rico09-18 19:24
  10. 2.65 km WSW of Guánica, Puerto Rico09-18 22:28
  11. 2.64 km W of Guánica, Puerto Rico09-18 16:57
  12. 2.5Near Guánica, Puerto Rico09-18 14:13
  13. 2.54 km W of Guánica, Puerto Rico09-20 00:13
  14. 2.54 km WNW of Guánica, Puerto Rico09-18 13:22
  15. 2.54 km W of Guánica, Puerto Rico09-20 23:38
  16. 2.510 km S of Lajas, Puerto Rico09-13 20:36
  17. 2.45 km WSW of Guánica, Puerto Rico09-24 22:16
  18. 2.34 km W of Guánica, Puerto Rico09-25 00:18
  19. 2.2Near Guánica, Puerto Rico09-28 07:37
  20. 2.15 km W of Guánica, Puerto Rico09-22 14:44
  21. 2.15 km NNW of Guánica, Puerto Rico09-23 20:51
  22. 2.14 km WSW of Guánica, Puerto Rico09-25 13:01
  23. 2.13 km W of Guánica, Puerto Rico09-26 17:40
  24. 2.14 km WNW of Guánica, Puerto Rico09-27 03:34
  25. 2.04 km WNW of Guánica, Puerto Rico09-23 23:16

Did you feel it?

Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.

Reports close 14 days after an earthquake.

Reports on SeismoAtlas

No reports yet.

USGS “Did You Feel It?” has 1 reports: add yours at USGS.

Event id pr71531133. First recorded here 28 Sept 2026, 17:32:12 UTC. Solutions: USGS · PR (usgs:pr71531133). Cite as: SeismoAtlas, “M3.2 earthquake 8 km WNW of Maricao, Puerto Rico”, https://seismoatlas.com/earthquake/pr71531133-m3-2-earthquake-8-km-wnw-of-maricao-puerto-rico, data from USGS.

JSON: /api/v1/events/pr71531133. SeismoAtlas is not an official warning service.