Earthquake.now

M4.3 Earthquake near Finschhafen, Papua New Guinea — 25 December 2025

A light earthquake of magnitude 4.3 was recorded near Finschhafen, Papua New Guinea on , with an epicentre 40 km north of Finschhafen, at a focal depth of 47.9 km. It ranked as the 22nd strongest of 22 earthquakes recorded in Papua New Guinea in the preceding 30 days.

4.3 Light

Time (UTC): 2025-12-25 21:33:25

Time (your timezone): —

Magnitude: 4.3 (light)

Focal depth: 47.9 km (shallow)

Epicentre: -6.1929, 147.8480

Location: 40 km N of Finschhafen, Papua New Guinea

Country: Papua New Guinea

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 284, 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 07:24 local solar time at the epicentre, around dawn.

This event was shallower than 52% of the 549 earthquakes recorded in Papua New Guinea in our catalogue and stronger than 3% of them.

Where was the epicentre?

The epicentre was located at -6.1929, 147.8480 — 40 km north of Finschhafen. The closest other recorded event was a magnitude 4.8 earthquake 20 km north-northwest of here on 27 May 2026.

The nearest other settlements in our records are Kanzarua (19 km west), Kimbe (119 km east-northeast), Lae (130 km south-southwest) and Madang (145 km west-northwest).

Why the 48 km depth matters

At 48 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

1 further earthquakes have been recorded within about 150 km of the epicentre in the seven days after this event, the largest of them magnitude 4.7.

128 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 6.7 event near Lae on 07 October 2025. This M4.3 event released about 3,981 times less energy than that event.

40 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 December 2025 worldwide record, and of earthquakes in Papua New Guinea during December 2025. Browse the full monthly archive to compare periods.

Nearest recorded earthquakes to this epicentre

Other recent earthquakes in Papua New Guinea

All recorded earthquakes in Papua New Guinea →

Other magnitude 4 earthquakes worldwide

All magnitude 4 earthquakes →

Questions about this earthquake

How strong was the earthquake near Finschhafen?

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 Finschhafen?

The focus was 48 km below the surface, which counts as shallow.

Was the Finschhafen earthquake felt at the surface?

At magnitude 4.3 and a focal depth of 48 km, shaking would have been concentrated near the epicentre.

When did the earthquake near Finschhafen happen?

25 December 2025 at 21:33 UTC.

Was there a tsunami?

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

Have there been aftershocks?

1 further earthquakes have been recorded within about 150 km of the epicentre in the seven days after this event, the largest of them magnitude 4.7.

How often do earthquakes happen near Finschhafen?

128 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 6.7 event near Lae on 07 October 2025. This M4.3 event released about 3,981 times less energy than that event.