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United States · Puerto Rico

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

UTC time: 2026-09-23 20:51:04 UTC Local time: —

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About this earthquake

On September 23, 2026 at 20:51 UTC, a magnitude M2.1 earthquake occurred near Ciénagas, Puerto Rico (United States). With a focal depth of about 8 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 129 earthquakes, the strongest at M3.7.

Details

ID
bda1e20c03afa9fdd7d64647d280cb3764516880
Magnitude
M2.1
Depth
7.8 km
UTC time
2026-09-23 20:51:04 UTC
Local time
—
Country
United States
State
Puerto Rico
City
Ciénagas
County
Guánica
Source
usgs
Coordinates
18.00783, -66.92833
Temperature
27.6°C

Depth profile

Depth profile Depth: 7.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 7.8 km
Shallow
7.8 km
7.8 km — shallower than the regional average (15.3 km)
Regional average: 15.3 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: 471 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
    36.1 kmStraight-line distance
  • Mercedita International AirportPuerto Rico · PSE · TJPS
    38.6 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-05

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

05 Oct 2025 – 05 Oct 2026 · M ≥ 2.0 · 931 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.

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