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M4.3 Earthquake near Merizo Village, Guam — 24 January 2025

A light earthquake of magnitude 4.3 was recorded near Merizo Village, Guam on , with an epicentre 23 km south-southwest of Merizo Village, at a focal depth of 66.4 km. It ranked as the 7th strongest of 6 earthquakes recorded in Guam in the preceding 30 days.

4.3 Light

Time (UTC): 2025-01-24 10:16:22

Time (your timezone): —

Magnitude: 4.3 (light)

Focal depth: 66.4 km (shallow)

Epicentre: 13.0813, 144.5680

Location: 23 km SSW of Merizo Village, Guam

Country: Guam

USGS link to NOAA tsunami information: Not linked

Review status: Reviewed

Source: USGS event page

How strong was this earthquake?

Light earthquakes are widely felt near the epicentre and can rattle windows, dishes and hanging objects. Damage is uncommon and usually limited to cracked plaster or fallen loose items.

A magnitude 4.3 earthquake radiates roughly 43 tons of TNT equivalent in seismic energy.

The USGS assigns this earthquake a significance score of 285, 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 19:54 local solar time at the epicentre, in the evening.

This event was deeper than 60% of the 72 earthquakes recorded in Guam in our catalogue and stronger than 4% of them.

Where was the epicentre?

The epicentre was located at 13.0813, 144.5680 — 23 km south-southwest of Merizo Village. The closest other recorded event was a magnitude 4.8 earthquake 5 km north of here on 06 December 2025.

The nearest other settlements in our records are Agat Village (38 km north), Piti Village (43 km north), Dededo Village (56 km north-northeast) and Yigo (60 km north-northeast).

Why the 66 km depth matters

At 66 km this was a shallow earthquake. Shallow events release their energy close to the surface, so for a given magnitude they produce noticeably stronger shaking — and more damage — than deeper ones. Roughly three quarters of all earthquakes worldwide occur at shallow depths.

This catalogue does not ingest eyewitness responses, so it cannot confirm where this earthquake was felt. Based on magnitude alone, an event this size is often felt across the surrounding area. Its shallow focus makes stronger surface shaking more likely than for a deeper 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 M4.3 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

No further earthquakes have been recorded within about 150 km of the epicentre in the seven days after this event.

75 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 6.1 event near Yigo Village on 10 August 2025. This M4.3 event released about 501 times less energy than that event.

7 earthquakes have been recorded within 100 km of this epicentre in the past year, 2 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 Guam during January 2025. Browse the full monthly archive to compare periods.

Nearest recorded earthquakes to this epicentre

Other recent earthquakes in Guam

All recorded earthquakes in Guam →

Other magnitude 4 earthquakes worldwide

All magnitude 4 earthquakes →

Questions about this earthquake

How strong was the earthquake near Merizo Village?

It measured magnitude 4.3 — a light earthquake. A magnitude 4.3 earthquake radiates roughly 43 tons of TNT equivalent in seismic energy.

How deep was the earthquake near Merizo Village?

The focus was 66 km below the surface, which counts as shallow.

Was the Merizo Village earthquake felt at the surface?

At magnitude 4.3 and a focal depth of 66 km, shaking would have been concentrated near the epicentre.

When did the earthquake near Merizo Village happen?

24 January 2025 at 10:16 UTC.

Was there a tsunami?

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

Have there been aftershocks?

No further earthquakes have been recorded within about 150 km of the epicentre in the seven days after this event.

How often do earthquakes happen near Merizo Village?

75 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 6.1 event near Yigo Village on 10 August 2025. This M4.3 event released about 501 times less energy than that event.