Sequence · 2025-05-31

M 6.1 · Observed seismic cluster · Kermadec Islands region

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 cluster14
M6+3
Analysis radius196 km
Observation window14 days
Largest secondary eventM 6.2
Quake Pulse · Strong sequence

What the sequence shows

After the M 6.1 reference event, Quake Pulse counts 8 M4+ event(s) in the first 24 hours and 14 in the first 7 days. Fourteen-day M4.5+ activity is about 4.3× the average equivalent derived from the previous year. The largest secondary event is M 0.0 below the reference event.

66/100Sequence score
Events in the previous 24 h0
In the first hour0
In the first 24 hours8
In the first 7 days14
Within 14 days14
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 d84Average 14-day equivalent3.2Activity / baseline ratio4.3×

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 6.2Magnitude gapM 0.0Observed duration7.0 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

34/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.1Kermadec Islands region10.0 km2025-05-31 14:28:49 UTCView event →
M 4.9Kermadec Islands region10.0 km2025-05-31 16:14:56 UTCView event →
M 4.6Kermadec Islands region10.0 km2025-05-31 17:26:39 UTCView event →
M 4.5Kermadec Islands region10.0 km2025-05-31 19:13:50 UTCView event →
M 4.8Kermadec Islands region10.0 km2025-05-31 20:16:51 UTCView event →
M 6.0Kermadec Islands region10.0 km2025-05-31 21:21:11 UTCView event →
M 6.2Kermadec Islands region10.0 km2025-05-31 22:26:22 UTCView event →
M 4.8Kermadec Islands region10.0 km2025-05-31 22:30:59 UTCView event →
M 4.6Kermadec Islands region10.0 km2025-05-31 22:51:48 UTCView event →
M 5.2Kermadec Islands region10.0 km2025-06-01 22:17:07 UTCView event →
M 4.7Kermadec Islands region84.7 km2025-06-03 03:34:55 UTCView event →
M 4.7Kermadec Islands region43.3 km2025-06-03 17:34:59 UTCView event →
M 4.5Kermadec Islands region37.2 km2025-06-04 13:58:08 UTCView event →
M 4.5Kermadec Islands region10.0 km2025-06-05 04:24:41 UTCView event →
M 4.9Kermadec Islands region341.6 km2025-06-07 13:20:48 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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