Sequence · 2024-06-28

M 7.2 · Observed seismic cluster · 10 km WSW of Atiquipa, Peru

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 cluster9
M6+2
Analysis radius372 km
Observation window14 days
Largest secondary eventM 6.1
Quake Pulse · Major sequence

What the sequence shows

After the M 7.2 reference event, Quake Pulse counts 1 M4+ event(s) in the first 24 hours and 3 in the first 7 days. Fourteen-day M4.5+ activity is about 5.1× the average equivalent derived from the previous year. The largest secondary event is M 1.1 below the reference event.

82/100Sequence score
Events in the previous 24 h0
In the first hour1
In the first 24 hours1
In the first 7 days3
Within 14 days8
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 d41Average 14-day equivalent1.6Activity / baseline ratio5.1×

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 6.1Magnitude gapM 1.1Observed duration10.8 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.

10 km WSW of Atiquipa, Peru · 372 kmInteractive 3D view of earthquakes within 372 km of 10 km WSW of Atiquipa, Peru.10 km WSW of Atiquipa, PeruM 4.7 · 45 km WSW of Atiquipa, Peru · 35.0 km
10 km WSW of Atiquipa, Peru372 km1 Recent earthquakes

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

115 Felt reports · PAGER YELLOW · Tsunami indicator · Shallow

79/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 7.210 km WSW of Atiquipa, Peru24.0 km2024-06-28 05:36:36 UTCView event →
M 4.745 km WSW of Atiquipa, Peru31.1 km2024-06-28 05:52:17 UTCView event →
M 6.134 km SW of Atiquipa, Peru18.0 km2024-06-29 07:05:32 UTCView event →
M 5.430 km SW of Atiquipa, Peru21.8 km2024-06-29 07:22:47 UTCView event →
M 4.562 km S of Atico, Peru20.1 km2024-07-05 18:06:21 UTCView event →
M 5.356 km WSW of Atiquipa, Peru22.5 km2024-07-08 14:03:32 UTCView event →
M 4.846 km W of Atiquipa, Peru32.0 km2024-07-08 14:07:45 UTCView event →
M 5.459 km WSW of Atiquipa, Peru13.5 km2024-07-08 19:33:26 UTCView event →
M 4.551 km WSW of Atiquipa, Peru26.3 km2024-07-09 00:10:16 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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