Sequence · 2025-10-07

M 6.6 · Observed seismic cluster · 17 km W of Lae, Papua New Guinea

Explore clusters of M4.5+ events observed around significant earthquakes. These clusters are descriptive and are not presented as earthquake predictions.

M4.5+ events in cluster4
M6+1
Analysis radius276 km
Observation window14 days
Largest secondary eventM 4.7
Quake Pulse · Notable sequence

What the sequence shows

After the M 6.6 reference event, Quake Pulse counts 1 M4+ event(s) in the first 24 hours and 1 in the first 7 days. Fourteen-day M4.5+ activity is about 1.3× the average equivalent derived from the previous year. The largest secondary event is M 1.9 below the reference event.

56/100Sequence score
Events in the previous 24 h1
In the first hour0
In the first 24 hours1
In the first 7 days1
Within 14 days3
Peak one-hour count1

Local historical context

Descriptive comparison with M4.5+ events observed in the same radius during the 365 days before the sequence.

M4.5+ events / 365 d58Average 14-day equivalent2.2Activity / baseline ratio1.3×

A ratio above 1 means denser M4.5+ activity than the average equivalent derived from the previous 365 days. It is not a risk measure or a forecast.

Reference event

Largest secondary eventM 4.7Magnitude gapM 1.9Observed duration7.5 d

Earlier events are shown as context only. They are not labelled precursors and should not be interpreted as predictive signals.

Evolving sequence map

Shows M4+ cluster events according to elapsed time after the reference event.

17 km W of Lae, Papua New Guinea · 276 kmInteractive 3D view of earthquakes within 276 km of 17 km W of Lae, Papua New Guinea.17 km W of Lae, Papua New GuineaM 4.6 · 37 km NNW of Lae, Papua New Guinea · 34.7 km
17 km W of Lae, Papua New Guinea276 km1 Recent earthquakes

Detailed timeline

Dots represent M4+ events retained by the sequence detector. Dot size depends on magnitude.

Sequences are descriptive groupings based on spatial and temporal proximity. Quake Pulse does not establish a causal link between every event here and does not provide earthquake forecasts.

Quake Pulse

Main-event impact

72 Felt reports · PAGER GREEN · Tsunami indicator · Intermediate

63/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.617 km W of Lae, Papua New Guinea98.0 km2025-10-07 11:05:17 UTCView event →
M 4.637 km NNW of Lae, Papua New Guinea47.5 km2025-10-07 12:10:26 UTCView event →
M 4.713 km WSW of Lae, Papua New Guinea97.8 km2025-10-14 20:38:43 UTCView event →
M 4.670 km NW of Lae, Papua New Guinea64.0 km2025-10-14 21:58:02 UTCView event →

Interpretation

Explore clusters of M4.5+ events observed around significant earthquakes. These clusters are descriptive and are not presented as earthquake predictions. Historical small-earthquake detection varies through time. Long-term comparisons are most robust at higher magnitude thresholds.

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