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United States · Puerto Rico

M2.1 Earthquake near Montalva, Puerto Rico (United States)

UTC time: 2026-10-04 01:49:57 UTC Local time: —

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About this earthquake

On October 4, 2026 at 01:49 UTC, a magnitude M2.1 earthquake occurred near Montalva, Puerto Rico (United States). With a focal depth of about 5 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: 152 earthquakes were recorded in the past 24 hours, the strongest reaching M3.9.

Details

ID
b7bba0f6fac25bf21d8e394c68ba0af8b98a2b84
Magnitude
M2.1
Depth
5.0 km
UTC time
2026-10-04 01:49:57 UTC
Local time
—
Country
United States
State
Puerto Rico
City
Montalva
County
Guánica
Source
usgs
Coordinates
17.98033, -66.95283
Temperature
24.2°C

Depth profile

Depth profile Depth: 5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 5 km
Shallow
5 km
5 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: 396 km ·Stratovolcano ·Elevation: 887 m ·Last eruption: 1640 ·Netherlands
  • Quill, The
    Distance: 427 km ·Stratovolcano ·Elevation: 601 m ·Last eruption: 250 ·Netherlands
  • Liamuiga
    Distance: 445 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
    36.9 kmStraight-line distance
  • Mercedita International AirportPuerto Rico · PSE · TJPS
    41.3 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-04

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

04 Oct 2025 – 04 Oct 2026 · M ≥ 2.0 · 930 Catalogue entries

Of 929 other entries for this area and period, 829 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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