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Sequence · 2026-04-16

M 6.0 · Observed seismic cluster · south of the Kermadec 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 cluster40
M6+1
Analysis radius180 km
Observation window14 days
Largest secondary eventM 5.9
Quake Pulse · Strong sequence

What the sequence shows

After the M 6.0 reference event, Quake Pulse counts 5 M4+ event(s) in the first 24 hours and 36 in the first 7 days. Fourteen-day M4.5+ activity is about 9.0× the average equivalent derived from the previous year. The largest secondary event is M 0.1 below the reference event.

67/100Sequence score
Events in the previous 24 h1
In the first hour2
In the first 24 hours5
In the first 7 days36
Within 14 days40
Peak one-hour count4

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 d116Average 14-day equivalent4.4Activity / baseline ratio9.0×

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 5.9Magnitude gapM 0.1Observed 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.

1 hour24 hours7 days14 days
south of the Kermadec Islands · 180 kmInteractive 3D view of earthquakes within 180 km of south of the Kermadec Islands.south of the Kermadec IslandsM 4.7 · Kermadec Islands region · 33.9 kmM 4.6 · south of the Kermadec Islands · 21.3 kmM 4.6 · south of the Kermadec Islands · 53.3 kmM 4.8 · Kermadec Islands region · 44.3 kmM 4.5 · Kermadec Islands region · 70.3 km
south of the Kermadec Islands180 km5 Recent earthquakes

Detailed timeline

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

0 h24 h7 d14 d

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

36/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.0south of the Kermadec Islands12.0 km2026-04-16 13:30:03 UTCView event →
M 4.7Kermadec Islands region10.0 km2026-04-16 13:37:53 UTCView event →
M 4.6south of the Kermadec Islands10.0 km2026-04-16 13:46:20 UTCView event →
M 4.6south of the Kermadec Islands10.0 km2026-04-16 14:41:42 UTCView event →
M 4.8Kermadec Islands region10.0 km2026-04-16 19:51:57 UTCView event →
M 4.5Kermadec Islands region35.0 km2026-04-17 11:51:06 UTCView event →
M 4.7south of the Kermadec Islands10.0 km2026-04-17 20:52:27 UTCView event →
M 4.9Kermadec Islands region10.0 km2026-04-18 04:06:49 UTCView event →
M 4.6Kermadec Islands region10.0 km2026-04-18 09:24:05 UTCView event →
M 5.9south of the Kermadec Islands13.0 km2026-04-18 10:47:55 UTCView event →
M 4.7Kermadec Islands region10.0 km2026-04-18 10:53:31 UTCView event →
M 4.8south of the Kermadec Islands10.0 km2026-04-18 10:54:31 UTCView event →
M 4.8Kermadec Islands region10.0 km2026-04-18 10:56:39 UTCView event →
M 4.5Kermadec Islands region10.0 km2026-04-18 11:45:56 UTCView event →
M 4.8Kermadec Islands region10.0 km2026-04-18 12:15:48 UTCView event →
M 5.1south of the Kermadec Islands10.0 km2026-04-18 12:16:26 UTCView event →
M 4.6south of the Kermadec Islands10.0 km2026-04-18 13:23:38 UTCView event →
M 4.5south of the Kermadec Islands10.0 km2026-04-18 13:26:59 UTCView event →
M 4.9south of the Kermadec Islands10.0 km2026-04-18 14:12:46 UTCView event →
M 5.0south of the Kermadec Islands11.8 km2026-04-18 16:03:44 UTCView event →
M 5.4south of the Kermadec Islands12.0 km2026-04-18 18:29:59 UTCView event →
M 4.6south of the Kermadec Islands10.0 km2026-04-18 20:55:57 UTCView event →
M 5.0south of the Kermadec Islands10.0 km2026-04-19 03:12:29 UTCView event →
M 4.5Kermadec Islands region35.0 km2026-04-19 04:50:35 UTCView event →
M 5.1south of the Kermadec Islands10.0 km2026-04-19 05:35:16 UTCView event →
M 5.2Kermadec Islands region10.0 km2026-04-19 05:35:45 UTCView event →
M 4.6Kermadec Islands region10.0 km2026-04-19 06:13:30 UTCView event →
M 4.6south of the Kermadec Islands10.0 km2026-04-19 08:05:15 UTCView event →
M 4.5south of the Kermadec Islands10.0 km2026-04-19 17:44:34 UTCView event →
M 4.7south of the Kermadec Islands10.0 km2026-04-19 19:01:13 UTCView event →
M 4.8south of the Kermadec Islands10.0 km2026-04-19 19:54:07 UTCView event →
M 4.9south of the Kermadec Islands10.0 km2026-04-19 19:55:37 UTCView event →
M 5.1south of the Kermadec Islands10.0 km2026-04-19 23:52:29 UTCView event →
M 4.9south of the Kermadec Islands10.0 km2026-04-20 00:19:20 UTCView event →
M 5.2south of the Kermadec Islands10.0 km2026-04-20 07:04:22 UTCView event →
M 4.9south of the Kermadec Islands10.0 km2026-04-20 22:11:43 UTCView event →
M 4.7south of the Kermadec Islands10.0 km2026-04-21 21:01:53 UTCView event →
M 4.9Kermadec Islands region89.9 km2026-04-24 18:22:32 UTCView event →
M 4.9Kermadec Islands region10.0 km2026-04-28 10:07:04 UTCView event →
M 4.9south of the Kermadec Islands10.0 km2026-04-30 06:40:48 UTCView event →
M 4.7south of the Kermadec Islands10.0 km2026-04-30 09:01:16 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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