Back to map
United States · Puerto Rico

M1.7 Earthquake near Montalva, Puerto Rico (United States)

UTC time: 2026-09-28 03:22:43 UTC Local time: —

Map

About this earthquake

On September 28, 2026 at 03:22 UTC, a magnitude M1.7 earthquake occurred near Montalva, Puerto Rico (United States). With a focal depth of about 7 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: over the past 24 hours, QuakeMap24 logged 182 earthquakes, the strongest at M4.8.

Details

ID
819f380c83f3042463a0ea4531decd136bb0771a
Magnitude
M1.7
Depth
6.8 km
UTC time
2026-09-28 03:22:43 UTC
Local time
—
Country
United States
State
Puerto Rico
City
Montalva
County
Guánica
Source
usgs
Coordinates
17.93967, -66.93533
Temperature
24.9°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: 394 km ·Stratovolcano ·Elevation: 887 m ·Last eruption: 1640 ·Netherlands
  • Quill, The
    Distance: 424 km ·Stratovolcano ·Elevation: 601 m ·Last eruption: 250 ·Netherlands
  • Liamuiga
    Distance: 443 km ·Stratovolcano ·Elevation: 1'156 m ·Last eruption: 160 ·Saint Kitts and Nevis
  • Nevis Peak
    Distance: 470 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
    40.1 kmStraight-line distance
  • Eugenio Maria De Hostos AirportPuerto Rico · MAZ · TJMZ
    41.7 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-28

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

28 Sep 2025 – 28 Sep 2026 · M ≥ 2.0 · 919 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

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.

Share