Earthquake.now

M3.9 Earthquake near Suárez, Puerto Rico — 15 January 2025

A minor earthquake of magnitude 3.9 was recorded near Suárez, Puerto Rico on , with an epicentre 124 km north of Suárez, at a focal depth of 84.0 km. It ranked as the 4th strongest of 162 earthquakes recorded in Puerto Rico in the preceding 30 days.

3.9 Minor

Time (UTC): 2025-01-15 05:56:56

Time (your timezone): —

Magnitude: 3.9 (minor)

Focal depth: 84.0 km (intermediate)

Epicentre: 19.5431, -65.6945

Location: 124 km N of Suárez, Puerto Rico

Country: Puerto Rico

USGS link to NOAA tsunami information: Not linked

Review status: Reviewed

Source: USGS event page

How strong was this earthquake?

Minor earthquakes in this range are felt by people close to the epicentre as a brief jolt or rattle, but they very rarely cause any damage.

A magnitude 3.9 earthquake radiates roughly 11 tons of TNT equivalent in seismic energy.

The USGS assigns this earthquake a significance score of 236, which is below the USGS threshold of more than 600 for its significant-earthquake list. The ranking combines magnitude with available Did You Feel It responses and PAGER alert level; it is not a direct measurement of damage.

What the magnitude scale actually measures →

When it happened locally

That is about 01:34 local solar time at the epicentre, in the early hours of the morning.

This event was deeper than 97% of the 3,750 earthquakes recorded in Puerto Rico in our catalogue and stronger than 99% of them.

Where was the epicentre?

The epicentre was located at 19.5431, -65.6945 — 124 km north of Suárez. The closest other recorded event was a magnitude 3.6 earthquake 20 km northeast of here on 12 September 2026.

The nearest other settlements in our records are Cataño (131 km south-southwest), Carolina (132 km south-southwest), Brenas (135 km south-southwest) and Campo Rico (138 km south).

Why the 84 km depth matters

At 84 km this was an intermediate-depth earthquake. Energy from events at this depth spreads out before it reaches the surface, which usually means weaker shaking near the epicentre than a shallow quake of the same magnitude, but shaking felt across a wider area.

This catalogue does not ingest eyewitness responses, so it cannot confirm where this earthquake was felt. Based on magnitude alone, an event this size may be noticed locally, especially close to the epicentre. Its intermediate depth normally reduces peak shaking near the epicentre compared with a shallow event of the same magnitude.

Read more on how focal depth changes what you feel →

What does the tsunami information flag mean?

The USGS record does not carry a link to NOAA tsunami information. That field is not an all-clear and does not state whether a tsunami occurred. In this case, a damaging tsunami would be less likely because at M3.9 it falls below the magnitude 6.5 threshold that generally applies before a submarine earthquake displaces enough water to generate a damaging tsunami; it occurred inland rather than beneath the sea floor. For an active coastal alert, use tsunami.gov or your local warning authority.

How earthquakes generate tsunamis, and what the alert levels mean →

Aftershocks and local seismic history

17 further earthquakes have been recorded within about 150 km of the epicentre in the seven days after this event, the largest of them magnitude 3.6.

80 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 5.6 event near Cruz Bay on 04 May 2025. This M3.9 event released about 367 times less energy than that event.

84 earthquakes have been recorded within 100 km of this epicentre in the past year, 26 of them in the past 30 days.

How long aftershock sequences last, and how large they get →

Where this event sits in the record

This earthquake is part of the January 2025 worldwide record, and of earthquakes in Puerto Rico during January 2025. Browse the full monthly archive to compare periods.

Nearest recorded earthquakes to this epicentre

Other recent earthquakes in Puerto Rico

All recorded earthquakes in Puerto Rico →

Other magnitude 3 earthquakes worldwide

All magnitude 3 earthquakes →

Questions about this earthquake

How strong was the earthquake near Suárez?

It measured magnitude 3.9 — a minor earthquake. A magnitude 3.9 earthquake radiates roughly 11 tons of TNT equivalent in seismic energy.

How deep was the earthquake near Suárez?

The focus was 84 km below the surface, which counts as intermediate.

Was the Suárez earthquake felt at the surface?

At magnitude 3.9 and a focal depth of 84 km, the depth spreads the energy out, so shaking is weaker overhead but reaches further.

When did the earthquake near Suárez happen?

15 January 2025 at 05:56 UTC.

Was there a tsunami?

No. The USGS record carries no tsunami-information link for this event.

Have there been aftershocks?

17 further earthquakes have been recorded within about 150 km of the epicentre in the seven days after this event, the largest of them magnitude 3.6.

How often do earthquakes happen near Suárez?

80 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 5.6 event near Cruz Bay on 04 May 2025. This M3.9 event released about 367 times less energy than that event.