Sequence · 2018-12-29

M 7.0 · Observed seismic cluster · 96 km ESE of Pondaguitan, Philippines

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 cluster11
M6+1
Analysis radius340 km
Observation window14 days
Largest secondary eventM 5.3
Quake Pulse · Strong sequence

What the sequence shows

After the M 7.0 reference event, Quake Pulse counts 2 M4+ event(s) in the first 24 hours and 8 in the first 7 days. Fourteen-day M4.5+ activity is about 1.9× the average equivalent derived from the previous year. The largest secondary event is M 1.7 below the reference event.

72/100Sequence score
Events in the previous 24 h0
In the first hour1
In the first 24 hours2
In the first 7 days8
Within 14 days10
Peak one-hour count1

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 d140Average 14-day equivalent5.4Activity / baseline ratio1.9×

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 5.3Magnitude gapM 1.7Observed duration11.8 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.

96 km ESE of Pondaguitan, Philippines · 340 kmInteractive 3D view of earthquakes within 340 km of 96 km ESE of Pondaguitan, Philippines.96 km ESE of Pondaguitan, PhilippinesM 5.3 · 94 km ESE of Pondaguitan, Philippines · 11.7 kmM 5.3 · 104 km SE of Pondaguitan, Philippines · 12.1 km
96 km ESE of Pondaguitan, Philippines340 km2 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

94 Felt reports · PAGER GREEN · Tsunami indicator · Shallow

73/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 7.096 km ESE of Pondaguitan, Philippines60.2 km2018-12-29 03:39:09 UTCView event →
M 5.394 km ESE of Pondaguitan, Philippines86.7 km2018-12-29 03:45:46 UTCView event →
M 5.3104 km SE of Pondaguitan, Philippines61.4 km2018-12-29 09:13:01 UTCView event →
M 4.7227 km NW of Tobelo, Indonesia35.0 km2018-12-31 23:09:27 UTCView event →
M 4.5152 km ESE of Pondaguitan, Philippines35.0 km2019-01-01 02:04:02 UTCView event →
M 4.6107 km SE of Pondaguitan, Philippines67.4 km2019-01-01 03:00:42 UTCView event →
M 4.61 km SSW of Aurora, Philippines46.0 km2019-01-01 04:19:17 UTCView event →
M 4.687 km ESE of Caburan, Philippines57.5 km2019-01-02 13:36:01 UTCView event →
M 5.0127 km SE of Sarangani, Philippines107.0 km2019-01-05 01:04:18 UTCView event →
M 4.567 km ESE of Pondaguitan, Philippines106.2 km2019-01-09 07:56:31 UTCView event →
M 4.685 km SSE of Pondaguitan, Philippines76.8 km2019-01-09 22:38:06 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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