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Sequence · 2023-11-24

M 6.9 · Observed seismic cluster · Maug Islands region, Northern Mariana 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 cluster75
M6+1
Analysis radius324 km
Observation window14 days
Largest secondary eventM 5.6
Quake Pulse · Major sequence

What the sequence shows

After the M 6.9 reference event, Quake Pulse counts 43 M4+ event(s) in the first 24 hours and 70 in the first 7 days. Fourteen-day M4.5+ activity is about 30.1× the average equivalent derived from the previous year. The largest secondary event is M 1.3 below the reference event.

85/100Sequence score
Events in the previous 24 h0
In the first hour15
In the first 24 hours43
In the first 7 days70
Within 14 days74
Peak one-hour count15

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 d64Average 14-day equivalent2.5Activity / baseline ratio30.1×

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 5.6Magnitude gapM 1.3Observed duration11.2 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
Maug Islands region, Northern Mariana Islands · 324 kmInteractive 3D view of earthquakes within 324 km of Maug Islands region, Northern Mariana Islands.Maug Islands region, Northern Mariana IslandsM 5.4 · Maug Islands region, Northern Mariana Islands · 34.2 kmM 5.1 · Maug Islands region, Northern Mariana Islands · 7.2 kmM 4.8 · Maug Islands region, Northern Mariana Islands · 22.3 kmM 4.5 · Maug Islands region, Northern Mariana Islands · 10.1 kmM 4.6 · Maug Islands region, Northern Mariana Islands · 37.4 kmM 4.6 · Maug Islands region, Northern Mariana Islands · 59.0 kmM 5.2 · Maug Islands region, Northern Mariana Islands · 23.9 kmM 4.7 · Maug Islands region, Northern Mariana Islands · 35.7 kmM 4.9 · Maug Islands region, Northern Mariana Islands · 5.2 kmM 4.5 · Maug Islands region, Northern Mariana Islands · 6.7 kmM 4.5 · Maug Islands region, Northern Mariana Islands · 4.8 kmM 4.8 · Maug Islands region, Northern Mariana Islands · 17.8 kmM 4.7 · Maug Islands region, Northern Mariana Islands · 31.5 kmM 4.5 · Maug Islands region, Northern Mariana Islands · 42.5 kmM 4.6 · Maug Islands region, Northern Mariana Islands · 28.4 kmM 4.6 · Maug Islands region, Northern Mariana Islands · 25.5 kmM 5.1 · Maug Islands region, Northern Mariana Islands · 5.7 kmM 4.8 · Maug Islands region, Northern Mariana Islands · 26.8 kmM 4.7 · Maug Islands region, Northern Mariana Islands · 3.0 kmM 4.5 · Maug Islands region, Northern Mariana Islands · 48.9 kmM 4.6 · Maug Islands region, Northern Mariana Islands · 17.3 kmM 4.7 · Maug Islands region, Northern Mariana Islands · 16.4 kmM 5.1 · Maug Islands region, Northern Mariana Islands · 13.0 kmM 5.1 · Maug Islands region, Northern Mariana Islands · 9.1 kmM 4.8 · Maug Islands region, Northern Mariana Islands · 20.3 kmM 5.0 · Maug Islands region, Northern Mariana Islands · 14.4 kmM 4.6 · Maug Islands region, Northern Mariana Islands · 28.1 kmM 4.6 · Maug Islands region, Northern Mariana Islands · 21.5 kmM 4.6 · Maug Islands region, Northern Mariana Islands · 51.4 kmM 4.7 · Maug Islands region, Northern Mariana Islands · 53.3 kmM 5.1 · Maug Islands region, Northern Mariana Islands · 23.2 kmM 4.9 · Maug Islands region, Northern Mariana Islands · 15.3 kmM 4.5 · Maug Islands region, Northern Mariana Islands · 57.8 kmM 4.7 · Maug Islands region, Northern Mariana Islands · 11.5 kmM 5.1 · Maug Islands region, Northern Mariana Islands · 12.2 kmM 4.6 · Maug Islands region, Northern Mariana Islands · 30.0 kmM 4.6 · Maug Islands region, Northern Mariana Islands · 16.6 kmM 4.6 · Maug Islands region, Northern Mariana Islands · 17.5 kmM 5.0 · Maug Islands region, Northern Mariana Islands · 14.9 kmM 5.3 · Pagan region, Northern Mariana Islands · 187.2 kmM 5.1 · Maug Islands region, Northern Mariana Islands · 25.4 kmM 4.6 · Maug Islands region, Northern Mariana Islands · 29.4 kmM 5.0 · Maug Islands region, Northern Mariana Islands · 7.7 km
Maug Islands region, Northern Mariana Islands324 km43 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 · Tsunami indicator · Shallow

63/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.9Maug Islands region, Northern Mariana Islands22.2 km2023-11-24 09:05:03 UTCView event →
M 5.4Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 09:14:24 UTCView event →
M 5.1Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 09:16:47 UTCView event →
M 4.8Maug Islands region, Northern Mariana Islands9.9 km2023-11-24 09:21:43 UTCView event →
M 4.5Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 09:27:09 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 09:28:19 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 09:28:44 UTCView event →
M 5.2Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 09:30:10 UTCView event →
M 4.7Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 09:32:49 UTCView event →
M 4.9Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 09:42:06 UTCView event →
M 4.5Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 09:43:36 UTCView event →
M 4.5Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 09:47:45 UTCView event →
M 4.8Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 09:48:13 UTCView event →
M 4.7Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 09:54:42 UTCView event →
M 4.5Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 09:57:43 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 10:02:56 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 10:09:15 UTCView event →
M 5.1Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 10:13:04 UTCView event →
M 4.8Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 10:14:19 UTCView event →
M 4.7Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 10:16:49 UTCView event →
M 4.5Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 10:19:14 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 10:21:55 UTCView event →
M 4.7Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 10:25:10 UTCView event →
M 5.1Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 10:30:47 UTCView event →
M 5.1Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 10:41:15 UTCView event →
M 4.8Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 10:43:37 UTCView event →
M 5.0Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 11:00:30 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 11:26:19 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 12:53:46 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 13:41:45 UTCView event →
M 4.7Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 14:03:20 UTCView event →
M 5.1Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 14:05:36 UTCView event →
M 4.9Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 14:11:25 UTCView event →
M 4.5Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 15:46:59 UTCView event →
M 4.7Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 16:04:53 UTCView event →
M 5.1Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 16:20:42 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 16:48:28 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.9 km2023-11-24 17:18:37 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 17:59:05 UTCView event →
M 5.0Maug Islands region, Northern Mariana Islands10.0 km2023-11-24 18:43:16 UTCView event →
M 5.3Pagan region, Northern Mariana Islands230.7 km2023-11-24 21:01:20 UTCView event →
M 5.1Maug Islands region, Northern Mariana Islands10.0 km2023-11-25 00:52:32 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-25 02:08:44 UTCView event →
M 5.0Maug Islands region, Northern Mariana Islands10.0 km2023-11-25 06:20:42 UTCView event →
M 5.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-25 15:10:53 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-25 15:15:41 UTCView event →
M 4.8Maug Islands region, Northern Mariana Islands10.0 km2023-11-25 15:20:27 UTCView event →
M 5.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-25 17:18:05 UTCView event →
M 4.9Maug Islands region, Northern Mariana Islands10.0 km2023-11-25 20:54:06 UTCView event →
M 4.5Maug Islands region, Northern Mariana Islands10.0 km2023-11-26 00:13:02 UTCView event →
M 4.8Maug Islands region, Northern Mariana Islands10.0 km2023-11-26 02:21:09 UTCView event →
M 4.8Maug Islands region, Northern Mariana Islands10.0 km2023-11-26 06:11:46 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-26 12:03:32 UTCView event →
M 4.8Maug Islands region, Northern Mariana Islands10.0 km2023-11-26 19:34:18 UTCView event →
M 4.5Maug Islands region, Northern Mariana Islands10.0 km2023-11-26 23:01:35 UTCView event →
M 4.5Maug Islands region, Northern Mariana Islands10.0 km2023-11-27 01:15:36 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-27 01:21:57 UTCView event →
M 4.7Maug Islands region, Northern Mariana Islands10.0 km2023-11-27 01:39:09 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands35.0 km2023-11-27 02:55:22 UTCView event →
M 4.5Maug Islands region, Northern Mariana Islands10.0 km2023-11-27 03:00:42 UTCView event →
M 5.0Maug Islands region, Northern Mariana Islands10.0 km2023-11-27 06:34:52 UTCView event →
M 5.0Maug Islands region, Northern Mariana Islands10.0 km2023-11-27 10:04:51 UTCView event →
M 4.8Maug Islands region, Northern Mariana Islands10.0 km2023-11-27 11:33:46 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-27 14:49:41 UTCView event →
M 4.5Maug Islands region, Northern Mariana Islands10.0 km2023-11-27 18:12:50 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-11-28 13:56:13 UTCView event →
M 4.5Maug Islands region, Northern Mariana Islands10.0 km2023-11-29 01:07:48 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands9.9 km2023-11-29 23:36:48 UTCView event →
M 4.8Maug Islands region, Northern Mariana Islands10.0 km2023-11-30 01:58:18 UTCView event →
M 4.7Maug Islands region, Northern Mariana Islands10.0 km2023-11-30 04:12:00 UTCView event →
M 4.5Maug Islands region, Northern Mariana Islands11.9 km2023-11-30 09:41:31 UTCView event →
M 5.2Maug Islands region, Northern Mariana Islands10.0 km2023-12-02 11:58:17 UTCView event →
M 4.7Maug Islands region, Northern Mariana Islands175.0 km2023-12-03 22:23:17 UTCView event →
M 4.5Maug Islands region, Northern Mariana Islands10.0 km2023-12-04 17:44:45 UTCView event →
M 4.6Maug Islands region, Northern Mariana Islands10.0 km2023-12-05 13:50:27 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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