Sequence · 2026-07-13

M 6.3 · Observed seismic cluster · southeast of the Loyalty Islands

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 cluster11
M6+1
Analysis radius228 km
Observation window14 days
Largest secondary eventM 5.1
Quake Pulse · Notable sequence

What the sequence shows

After the M 6.3 reference event, Quake Pulse counts 9 M4+ event(s) in the first 24 hours and 9 in the first 7 days. Fourteen-day M4.5+ activity is about 4.0× the average equivalent derived from the previous year. The largest secondary event is M 1.2 below the reference event.

59/100Sequence score
Events in the previous 24 h3
In the first hour2
In the first 24 hours9
In the first 7 days9
Within 14 days10
Peak one-hour count3

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 d66Average 14-day equivalent2.5Activity / baseline ratio4.0×

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 1.2Observed duration13.8 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.

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

PAGER GREEN · Shallow

35/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.3southeast of the Loyalty Islands16.0 km2026-07-13 14:45:49 UTCView event →
M 4.6southeast of the Loyalty Islands10.0 km2026-07-13 15:04:57 UTCView event →
M 4.7southeast of the Loyalty Islands10.0 km2026-07-13 15:14:34 UTCView event →
M 5.1southeast of the Loyalty Islands10.0 km2026-07-13 16:31:29 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2026-07-13 17:15:34 UTCView event →
M 4.7southeast of the Loyalty Islands10.0 km2026-07-13 17:21:00 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2026-07-13 17:24:10 UTCView event →
M 4.9southeast of the Loyalty Islands10.0 km2026-07-13 19:48:32 UTCView event →
M 5.0southeast of the Loyalty Islands10.0 km2026-07-13 21:03:36 UTCView event →
M 4.9southeast of the Loyalty Islands10.0 km2026-07-14 01:27:30 UTCView event →
M 4.9southeast of the Loyalty Islands122.2 km2026-07-27 10:46:55 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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