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United States · Puerto Rico

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

UTC time: 2026-09-17 07:56:27 UTC Local time: —

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About this earthquake

On September 17, 2026 at 07:56 UTC, a magnitude M3.1 earthquake occurred near Guayanilla, Puerto Rico (United States). The hypocenter lay relatively close to the surface at around 12 km, increasing how strongly it was felt. Earthquakes of this magnitude are often felt but rarely cause damage.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 182 earthquakes, the strongest at M5.2.

Details

ID
45f0ec217bd9283c5160f7cb94227acf308f87f7
Magnitude
M3.1
Depth
12.1 km
UTC time
2026-09-17 07:56:27 UTC
Local time
—
Country
United States
State
Puerto Rico
City
Guayanilla
County
Guayanilla
Source
usgs
Coordinates
17.99633, -66.80867
Temperature
24.7°C

Depth profile

Depth profile Depth: 12.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 12.1 km
Shallow
12.1 km
12.1 km — shallower 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: 381 km ·Stratovolcano ·Elevation: 887 m ·Last eruption: 1640 ·Netherlands
  • Quill, The
    Distance: 412 km ·Stratovolcano ·Elevation: 601 m ·Last eruption: 250 ·Netherlands
  • Liamuiga
    Distance: 430 km ·Stratovolcano ·Elevation: 1'156 m ·Last eruption: 160 ·Saint Kitts and Nevis
  • Nevis Peak
    Distance: 458 km ·Stratovolcano ·Elevation: 985 m ·Saint Kitts and Nevis

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Mercedita International AirportPuerto Rico · PSE · TJPS
    26.0 kmStraight-line distance
  • Eugenio Maria De Hostos AirportPuerto Rico · MAZ · TJMZ
    46.1 kmStraight-line distance

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

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, 65 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · United States

Open history map
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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