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United States · Puerto Rico

M3.3 Earthquake near Isabela, Puerto Rico (United States)

UTC time: 2026-05-04 01:21:51 UTC Local time: —

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About this earthquake

On May 4, 2026 at 01:21 UTC, a magnitude M3.3 earthquake occurred near Isabela, Puerto Rico (United States). At around 82 km, the focal depth places this among intermediate-depth events. Shaking of this size is frequently noticed but usually harmless.

The data is provided by EMSC and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 186 earthquakes, the strongest at M3.7.

Details

ID
ef01de2a5cbca5fb7457c86258f4ab29b021ae01
Magnitude
M3.3
Depth
82.3 km
UTC time
2026-05-04 01:21:51 UTC
Local time
—
Country
United States
State
Puerto Rico
City
Isabela
County
Isabela
Source
emsc
Coordinates
18.55600, -66.97450
Temperature
23.2°C

Depth profile

Depth profile Depth: 82.3 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 82.3 km
Intermediate
82.3 km
82.3 km — deeper than the regional average (15.2 km)
Regional average: 15.2 km
Why depth matters

Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.

Depth classes per USGS

Volcanoes nearby

  • Saba
    Distance: 409 km ·Stratovolcano ·Elevation: 887 m ·Last eruption: 1640 ·Netherlands
  • Quill, The
    Distance: 441 km ·Stratovolcano ·Elevation: 601 m ·Last eruption: 250 ·Netherlands
  • Liamuiga
    Distance: 461 km ·Stratovolcano ·Elevation: 1'156 m ·Last eruption: 160 ·Saint Kitts and Nevis
  • Nevis Peak
    Distance: 491 km ·Stratovolcano ·Elevation: 985 m ·Saint Kitts and Nevis

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Rafael Hernández International AirportPuerto Rico · BQN · TJBQ
    17.7 kmStraight-line distance
  • Eugenio Maria De Hostos AirportPuerto Rico · MAZ · TJMZ
    38.1 kmStraight-line distance

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

Nuclear power plants

  • Boiling Nuclear Superheater (BONUS) nuclear power plantPuerto RicoPermanently shut downReactor units at site: 1
    37.6 kmStraight-line distance

Source: Global Energy Monitor · Global Nuclear Power Tracker · Dataset date: 2026-08

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 ≥ 3.0 · 94 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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