Back to map
United States · Puerto Rico

M3.1 Earthquake near Arecibo, Puerto Rico (United States)

UTC time: 2026-09-30 21:00:48 UTC Local time: —

Map

About this earthquake

A magnitude M3.1 earthquake was recorded near Arecibo, Puerto Rico (United States) on September 30, 2026 at 21:00 UTC. The earthquake originated at an intermediate depth of about 105 km. Shaking of this size is frequently noticed but usually harmless.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 185 earthquakes, the strongest at M4.2.

Details

ID
6438e0c425f7e0df520d000e6269fffe2ccd91fc
Magnitude
M3.1
Depth
105.4 km
UTC time
2026-09-30 21:00:48 UTC
Local time
—
Country
United States
State
Puerto Rico
City
Arecibo
County
Arecibo
Source
usgs
Coordinates
18.47783, -66.61367
Temperature
28.4°C

Depth profile

Depth profile Depth: 105.4 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 105.4 km
Intermediate
105.4 km
105.4 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: 370 km ·Stratovolcano ·Elevation: 887 m ·Last eruption: 1640 ·Netherlands
  • Quill, The
    Distance: 402 km ·Stratovolcano ·Elevation: 601 m ·Last eruption: 250 ·Netherlands
  • Liamuiga
    Distance: 422 km ·Stratovolcano ·Elevation: 1'156 m ·Last eruption: 160 ·Saint Kitts and Nevis
  • Nevis Peak
    Distance: 452 km ·Stratovolcano ·Elevation: 985 m ·Saint Kitts and Nevis

Puerto Rico

Context for this earthquake

30 Sep 2025 – 30 Sep 2026 · M ≥ 3.0 · 93 Catalogue entries

Of 92 other entries for this area and period, 51 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.

Share