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Sequence · 2023-05-20

M 6.5 · 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 cluster72
M6+2
Analysis radius260 km
Observation window14 days
Largest secondary eventM 6.1
Quake Pulse · Major sequence

What the sequence shows

After the M 6.5 reference event, Quake Pulse counts 32 M4+ event(s) in the first 24 hours and 62 in the first 7 days. Fourteen-day M4.5+ activity is about 33.7× the average equivalent derived from the previous year. The largest secondary event is M 0.4 below the reference event.

79/100Sequence score
Events in the previous 24 h94
In the first hour5
In the first 24 hours32
In the first 7 days62
Within 14 days71
Peak one-hour count5

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 d55Average 14-day equivalent2.1Activity / baseline ratio33.7×

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 6.1Magnitude gapM 0.4Observed duration13.6 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
southeast of the Loyalty Islands · 260 kmInteractive 3D view of earthquakes within 260 km of southeast of the Loyalty Islands.southeast of the Loyalty IslandsM 5.4 · southeast of the Loyalty Islands · 25.4 kmM 5.2 · southeast of the Loyalty Islands · 12.7 kmM 5.0 · 291 km E of Vao, New Caledonia · 30.4 kmM 5.3 · southeast of the Loyalty Islands · 41.7 kmM 4.5 · 278 km E of Vao, New Caledonia · 43.5 kmM 4.7 · southeast of the Loyalty Islands · 30.7 kmM 4.7 · southeast of the Loyalty Islands · 12.0 kmM 5.1 · southeast of the Loyalty Islands · 21.0 kmM 4.6 · southeast of the Loyalty Islands · 39.2 kmM 5.1 · 298 km E of Vao, New Caledonia · 17.5 kmM 5.2 · southeast of the Loyalty Islands · 16.0 kmM 4.9 · southeast of the Loyalty Islands · 39.6 kmM 4.5 · southeast of the Loyalty Islands · 12.6 kmM 4.5 · southeast of the Loyalty Islands · 47.7 kmM 4.7 · 270 km ESE of Vao, New Caledonia · 54.4 kmM 4.8 · southeast of the Loyalty Islands · 120.3 kmM 4.7 · southeast of the Loyalty Islands · 19.2 kmM 4.7 · southeast of the Loyalty Islands · 7.8 kmM 5.3 · southeast of the Loyalty Islands · 6.7 kmM 4.7 · southeast of the Loyalty Islands · 12.7 kmM 5.1 · southeast of the Loyalty Islands · 25.7 kmM 5.2 · southeast of the Loyalty Islands · 20.6 kmM 4.8 · southeast of the Loyalty Islands · 27.9 kmM 4.5 · southeast of the Loyalty Islands · 10.2 kmM 4.5 · southeast of the Loyalty Islands · 13.0 kmM 4.6 · southeast of the Loyalty Islands · 68.5 kmM 4.8 · southeast of the Loyalty Islands · 80.2 kmM 4.5 · southeast of the Loyalty Islands · 49.0 kmM 4.5 · southeast of the Loyalty Islands · 59.6 kmM 5.0 · southeast of the Loyalty Islands · 39.9 kmM 4.6 · southeast of the Loyalty Islands · 69.4 kmM 5.1 · southeast of the Loyalty Islands · 114.8 km
southeast of the Loyalty Islands260 km32 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

3 Felt reports · PAGER GREEN · Shallow

45/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.5southeast of the Loyalty Islands10.0 km2023-05-20 02:09:54 UTCView event →
M 5.4southeast of the Loyalty Islands10.0 km2023-05-20 02:17:44 UTCView event →
M 5.2southeast of the Loyalty Islands21.6 km2023-05-20 02:20:19 UTCView event →
M 5.0291 km E of Vao, New Caledonia10.0 km2023-05-20 02:28:44 UTCView event →
M 5.3southeast of the Loyalty Islands10.0 km2023-05-20 02:56:23 UTCView event →
M 4.5278 km E of Vao, New Caledonia10.0 km2023-05-20 03:01:28 UTCView event →
M 4.7southeast of the Loyalty Islands10.0 km2023-05-20 03:13:30 UTCView event →
M 4.7southeast of the Loyalty Islands10.0 km2023-05-20 03:25:42 UTCView event →
M 5.1southeast of the Loyalty Islands30.8 km2023-05-20 03:46:54 UTCView event →
M 4.6southeast of the Loyalty Islands33.7 km2023-05-20 03:47:52 UTCView event →
M 5.1298 km E of Vao, New Caledonia10.0 km2023-05-20 04:31:24 UTCView event →
M 5.2southeast of the Loyalty Islands10.0 km2023-05-20 04:34:13 UTCView event →
M 4.9southeast of the Loyalty Islands34.3 km2023-05-20 04:41:23 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-20 04:56:00 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-20 05:15:03 UTCView event →
M 4.7270 km ESE of Vao, New Caledonia10.0 km2023-05-20 07:55:38 UTCView event →
M 4.8southeast of the Loyalty Islands10.0 km2023-05-20 09:41:55 UTCView event →
M 4.7southeast of the Loyalty Islands10.0 km2023-05-20 09:47:16 UTCView event →
M 4.7southeast of the Loyalty Islands10.0 km2023-05-20 11:02:31 UTCView event →
M 5.3southeast of the Loyalty Islands10.0 km2023-05-20 11:36:07 UTCView event →
M 4.7southeast of the Loyalty Islands10.0 km2023-05-20 12:36:41 UTCView event →
M 5.1southeast of the Loyalty Islands10.0 km2023-05-20 13:27:14 UTCView event →
M 5.2southeast of the Loyalty Islands10.0 km2023-05-20 13:29:22 UTCView event →
M 4.8southeast of the Loyalty Islands10.0 km2023-05-20 13:50:20 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-20 14:14:09 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-20 14:17:00 UTCView event →
M 4.6southeast of the Loyalty Islands10.0 km2023-05-20 16:10:56 UTCView event →
M 4.8southeast of the Loyalty Islands24.2 km2023-05-20 16:13:59 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-20 16:50:44 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-20 17:56:35 UTCView event →
M 5.0southeast of the Loyalty Islands10.0 km2023-05-20 18:07:40 UTCView event →
M 4.6southeast of the Loyalty Islands34.0 km2023-05-20 19:59:26 UTCView event →
M 5.1southeast of the Loyalty Islands13.5 km2023-05-20 22:08:45 UTCView event →
M 4.6southeast of the Loyalty Islands10.0 km2023-05-21 02:25:56 UTCView event →
M 4.7southeast of the Loyalty Islands42.7 km2023-05-21 02:27:06 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-21 02:58:15 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-21 04:06:23 UTCView event →
M 4.9southeast of the Loyalty Islands28.9 km2023-05-21 04:07:26 UTCView event →
M 4.6southeast of the Loyalty Islands12.0 km2023-05-21 12:31:03 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-21 17:11:19 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-22 04:04:05 UTCView event →
M 5.4southeast of the Loyalty Islands16.6 km2023-05-22 06:52:44 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-22 19:27:45 UTCView event →
M 5.0southeast of the Loyalty Islands10.0 km2023-05-22 21:45:56 UTCView event →
M 5.0238 km ESE of Tadine, New Caledonia10.0 km2023-05-22 22:54:13 UTCView event →
M 4.9southeast of the Loyalty Islands10.0 km2023-05-22 22:59:57 UTCView event →
M 4.9southeast of the Loyalty Islands10.0 km2023-05-23 00:52:43 UTCView event →
M 4.5296 km E of Vao, New Caledonia10.0 km2023-05-23 03:13:04 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-23 05:36:11 UTCView event →
M 5.1southeast of the Loyalty Islands24.0 km2023-05-23 06:22:12 UTCView event →
M 6.1290 km E of Vao, New Caledonia10.0 km2023-05-23 06:41:58 UTCView event →
M 5.0southeast of the Loyalty Islands10.0 km2023-05-23 09:26:38 UTCView event →
M 4.6southeast of the Loyalty Islands22.8 km2023-05-23 10:20:33 UTCView event →
M 4.9southeast of the Loyalty Islands13.2 km2023-05-23 11:49:54 UTCView event →
M 4.8289 km ESE of Tadine, New Caledonia10.0 km2023-05-23 13:06:42 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-23 17:13:12 UTCView event →
M 4.6southeast of the Loyalty Islands10.0 km2023-05-23 17:48:02 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-23 18:53:52 UTCView event →
M 4.9southeast of the Loyalty Islands10.0 km2023-05-24 22:23:22 UTCView event →
M 5.5southeast of the Loyalty Islands10.0 km2023-05-25 10:39:37 UTCView event →
M 4.7southeast of the Loyalty Islands10.0 km2023-05-25 12:59:14 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-25 21:26:08 UTCView event →
M 4.7southeast of the Loyalty Islands10.0 km2023-05-26 11:42:15 UTCView event →
M 4.8southeast of the Loyalty Islands10.0 km2023-05-27 02:34:53 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-29 00:54:16 UTCView event →
M 4.5southeast of the Loyalty Islands10.0 km2023-05-29 15:08:42 UTCView event →
M 4.6southeast of the Loyalty Islands10.0 km2023-05-31 01:58:05 UTCView event →
M 4.7southeast of the Loyalty Islands10.0 km2023-05-31 10:37:00 UTCView event →
M 4.5southeast of the Loyalty Islands17.8 km2023-06-01 20:43:37 UTCView event →
M 5.1southeast of the Loyalty Islands10.0 km2023-06-02 04:31:31 UTCView event →
M 4.9southeast of the Loyalty Islands28.4 km2023-06-02 11:46:33 UTCView event →
M 4.9southeast of the Loyalty Islands10.0 km2023-06-02 15:53:54 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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