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United States · Puerto Rico

M2.3 Earthquake near Montalva, Puerto Rico (United States)

UTC time: 2026-09-18 20:17:46 UTC Local time: —

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About this earthquake

On September 18, 2026 at 20:17 UTC, a magnitude M2.3 earthquake occurred near Montalva, Puerto Rico (United States). The hypocenter lay relatively close to the surface at around 7 km, increasing how strongly it was felt. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 191 earthquakes, the strongest at M4.8.

Details

ID
6f0ea797909fb6f8d4afcfcca5cfe2385796ec39
Magnitude
M2.3
Depth
6.8 km
UTC time
2026-09-18 20:17:46 UTC
Local time
—
Country
United States
State
Puerto Rico
City
Montalva
County
Guánica
Source
usgs
Coordinates
17.97300, -66.96017
Temperature
29.3°C

Depth profile

Depth profile Depth: 6.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 6.8 km
Shallow
6.8 km
6.8 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: 397 km ·Stratovolcano ·Elevation: 887 m ·Last eruption: 1640 ·Netherlands
  • Quill, The
    Distance: 427 km ·Stratovolcano ·Elevation: 601 m ·Last eruption: 250 ·Netherlands
  • Liamuiga
    Distance: 446 km ·Stratovolcano ·Elevation: 1'156 m ·Last eruption: 160 ·Saint Kitts and Nevis
  • Nevis Peak
    Distance: 473 km ·Stratovolcano ·Elevation: 985 m ·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
    37.2 kmStraight-line distance
  • Mercedita International AirportPuerto Rico · PSE · TJPS
    42.2 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-18

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

18 Sep 2025 – 18 Sep 2026 · M ≥ 2.0 · 867 Catalogue entries

Of 866 other entries for this area and period, 534 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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