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Sequence · 2025-07-28

M 7.0 · Observed seismic cluster · Macquarie Island 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 cluster25
M6+1
Analysis radius340 km
Observation window14 days
Largest secondary eventM 5.8
Quake Pulse · Major sequence

What the sequence shows

After the M 7.0 reference event, Quake Pulse counts 20 M4+ event(s) in the first 24 hours and 23 in the first 7 days. Fourteen-day M4.5+ activity is about 48.0× the average equivalent derived from the previous year. The largest secondary event is M 1.2 below the reference event.

87/100Sequence score
Events in the previous 24 h0
In the first hour9
In the first 24 hours20
In the first 7 days23
Within 14 days24
Peak one-hour count9

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 d10Average 14-day equivalent0.4Activity / baseline ratio48.0×

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 5.8Magnitude gapM 1.2Observed duration11.5 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
Macquarie Island region · 340 kmInteractive 3D view of earthquakes within 340 km of Macquarie Island region.Macquarie Island regionM 5.8 · Macquarie Island region · 48.1 kmM 5.1 · Macquarie Island region · 39.2 kmM 5.3 · Macquarie Island region · 46.0 kmM 4.8 · Macquarie Island region · 69.8 kmM 4.9 · Macquarie Island region · 53.1 kmM 4.5 · Macquarie Island region · 51.7 kmM 4.6 · Macquarie Island region · 46.4 kmM 5.0 · Macquarie Island region · 40.5 kmM 4.8 · Macquarie Island region · 44.7 kmM 5.4 · Macquarie Island region · 57.4 kmM 5.1 · Macquarie Island region · 28.1 kmM 4.5 · Macquarie Island region · 59.7 kmM 4.6 · Macquarie Island region · 30.0 kmM 4.6 · Macquarie Island region · 39.6 kmM 4.7 · Macquarie Island region · 47.2 kmM 4.7 · Macquarie Island region · 20.8 kmM 4.7 · Macquarie Island region · 38.9 kmM 5.1 · Macquarie Island region · 60.5 kmM 4.6 · Macquarie Island region · 73.1 kmM 4.6 · Macquarie Island region · 29.6 km
Macquarie Island region340 km20 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 · Tsunami indicator · Shallow

61/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 7.0Macquarie Island region31.0 km2025-07-28 22:10:35 UTCView event →
M 5.8Macquarie Island region10.0 km2025-07-28 22:15:20 UTCView event →
M 5.1Macquarie Island region10.0 km2025-07-28 22:18:44 UTCView event →
M 5.3Macquarie Island region34.9 km2025-07-28 22:20:41 UTCView event →
M 4.8Macquarie Island region36.9 km2025-07-28 22:30:17 UTCView event →
M 4.9Macquarie Island region16.8 km2025-07-28 22:41:44 UTCView event →
M 4.5Macquarie Island region38.4 km2025-07-28 22:48:54 UTCView event →
M 4.6Macquarie Island region34.7 km2025-07-28 22:49:43 UTCView event →
M 5.0Macquarie Island region10.0 km2025-07-28 22:58:59 UTCView event →
M 4.8Macquarie Island region32.9 km2025-07-28 23:08:05 UTCView event →
M 5.4Macquarie Island region33.2 km2025-07-29 00:21:16 UTCView event →
M 5.1Macquarie Island region33.9 km2025-07-29 00:44:09 UTCView event →
M 4.5Macquarie Island region10.0 km2025-07-29 01:19:03 UTCView event →
M 4.6Macquarie Island region10.0 km2025-07-29 02:47:32 UTCView event →
M 4.6Macquarie Island region10.0 km2025-07-29 03:28:29 UTCView event →
M 4.7Macquarie Island region10.0 km2025-07-29 04:36:59 UTCView event →
M 4.7Macquarie Island region10.0 km2025-07-29 05:13:45 UTCView event →
M 4.7Macquarie Island region10.0 km2025-07-29 06:13:50 UTCView event →
M 5.1Macquarie Island region10.0 km2025-07-29 07:14:17 UTCView event →
M 4.6Macquarie Island region10.0 km2025-07-29 10:29:08 UTCView event →
M 4.6Macquarie Island region10.0 km2025-07-29 19:23:19 UTCView event →
M 5.1Macquarie Island region10.0 km2025-07-29 23:56:30 UTCView event →
M 4.6Macquarie Island region10.0 km2025-07-30 06:54:59 UTCView event →
M 5.0Macquarie Island region10.0 km2025-07-30 07:09:28 UTCView event →
M 4.9Macquarie Island region10.0 km2025-08-09 09:04:28 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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