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United States · Puerto Rico

M3.1 Earthquake near Mayagüez, Puerto Rico (United States)

UTC time: 2026-09-17 12:07:43 UTC Local time: —

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About this earthquake

A magnitude M3.1 earthquake was recorded near Mayagüez, Puerto Rico (United States) on September 17, 2026 at 12:07 UTC. The hypocenter lay relatively close to the surface at around 57 km, increasing how strongly it was felt. Shaking of this size is frequently noticed but usually harmless.

The data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 166 earthquakes, the strongest at M5.2.

Details

ID
9cb3d253e24bc78e406fa538fcb2409013da631a
Magnitude
M3.1
Depth
56.5 km
UTC time
2026-09-17 12:07:43 UTC
Local time
—
Country
United States
State
Puerto Rico
City
Mayagüez
County
Mayagüez
Source
usgs
Coordinates
18.12617, -67.25217
Temperature
28.3°C

Depth profile

Depth profile Depth: 56.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 56.5 km
Shallow
56.5 km
56.5 km — deeper than the regional average (15.2 km)
Regional average: 15.2 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Volcanoes nearby

  • Saba
    Distance: 429 km ·Stratovolcano ·Elevation: 887 m ·Last eruption: 1640 ·Netherlands
  • Quill, The
    Distance: 460 km ·Stratovolcano ·Elevation: 601 m ·Last eruption: 250 ·Netherlands
  • Liamuiga
    Distance: 479 km ·Stratovolcano ·Elevation: 1'156 m ·Last eruption: 160 ·Saint Kitts and Nevis

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Eugenio Maria De Hostos AirportPuerto Rico · MAZ · TJMZ
    18.1 kmStraight-line distance
  • Rafael Hernández International AirportPuerto Rico · BQN · TJBQ
    43.0 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-17

Nuclear power plants

  • Boiling Nuclear Superheater (BONUS) nuclear power plantPuerto RicoPermanently shut downReactor units at site: 1
    26.6 kmStraight-line distance

Source: Global Energy Monitor · Global Nuclear Power Tracker · Dataset date: 2026-08

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

Puerto Rico

Context for this earthquake

17 Sep 2025 – 17 Sep 2026 · M ≥ 3.0 · 87 Catalogue entries

Of 86 other entries for this area and period, 63 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · United States

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Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · United States

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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