Sequence · 2023-11-27

M 6.5 · Observed seismic cluster · 44 km E of Wewak, 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 cluster8
M6+1
Analysis radius260 km
Observation window14 days
Largest secondary eventM 5.1
Quake Pulse · Strong sequence

What the sequence shows

After the M 6.5 reference event, Quake Pulse counts 5 M4+ event(s) in the first 24 hours and 8 in the first 7 days. Fourteen-day M4.5+ activity is about 2.9× the average equivalent derived from the previous year. The largest secondary event is M 1.4 below the reference event.

67/100Sequence score
Events in the previous 24 h0
In the first hour2
In the first 24 hours5
In the first 7 days8
Within 14 days9
Peak one-hour count2

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 d80Average 14-day equivalent3.1Activity / baseline ratio2.9×

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 5.1Magnitude gapM 1.4Observed duration9.7 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.

44 km E of Wewak, Papua New Guinea · 260 kmInteractive 3D view of earthquakes within 260 km of 44 km E of Wewak, Papua New Guinea.44 km E of Wewak, Papua New GuineaM 4.7 · 7 km SE of Wewak, Papua New Guinea · 39.3 kmM 5.1 · 47 km E of Wewak, Papua New Guinea · 8.5 kmM 4.7 · 15 km ENE of Wewak, Papua New Guinea · 30.1 kmM 4.5 · 13 km ENE of Wewak, Papua New Guinea · 32.4 kmM 4.6 · 29 km WNW of Porgera, Papua New Guinea · 231.3 km
44 km E of Wewak, Papua New Guinea260 km5 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

8 Felt reports · PAGER GREEN · Tsunami indicator · Shallow

59/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.544 km E of Wewak, Papua New Guinea10.0 km2023-11-27 21:46:42 UTCView event →
M 4.77 km SE of Wewak, Papua New Guinea10.0 km2023-11-27 21:54:38 UTCView event →
M 5.147 km E of Wewak, Papua New Guinea10.0 km2023-11-27 21:56:55 UTCView event →
M 4.715 km ENE of Wewak, Papua New Guinea10.0 km2023-11-28 03:11:55 UTCView event →
M 4.513 km ENE of Wewak, Papua New Guinea10.0 km2023-11-28 17:25:28 UTCView event →
M 4.629 km WNW of Porgera, Papua New Guinea68.6 km2023-11-28 19:21:14 UTCView event →
M 4.751 km N of Kainantu, Papua New Guinea47.4 km2023-11-30 03:08:49 UTCView event →
M 4.949 km N of Kainantu, Papua New Guinea60.2 km2023-11-30 03:18:10 UTCView event →
M 4.5198 km N of Madang, Papua New Guinea10.0 km2023-11-30 17:39:05 UTCView event →
M 4.9102 km ENE of Angoram, Papua New Guinea10.0 km2023-12-07 15:10:12 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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