Sequence · 2024-08-02

M 6.8 · Observed seismic cluster · 20 km E of Barcelona, 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 cluster27
M6+2
Analysis radius308 km
Observation window14 days
Largest secondary eventM 6.3
Quake Pulse · Major sequence

What the sequence shows

After the M 6.8 reference event, Quake Pulse counts 22 M4+ event(s) in the first 24 hours and 25 in the first 7 days. Fourteen-day M4.5+ activity is about 1.0× the average equivalent derived from the previous year. The largest secondary event is M 0.5 below the reference event.

79/100Sequence score
Events in the previous 24 h1
In the first hour11
In the first 24 hours22
In the first 7 days25
Within 14 days26
Peak one-hour count11

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 d676Average 14-day equivalent25.9Activity / baseline ratio1.0×

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 6.3Magnitude gapM 0.5Observed duration7.3 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.

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

118 Felt reports · PAGER GREEN · Tsunami indicator · Shallow

69/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.820 km E of Barcelona, Philippines32.0 km2024-08-02 22:23:02 UTCView event →
M 4.935 km E of Santa Maria, Philippines35.0 km2024-08-02 22:30:11 UTCView event →
M 5.331 km E of Barcelona, Philippines77.0 km2024-08-02 22:31:15 UTCView event →
M 4.838 km ENE of Barcelona, Philippines52.7 km2024-08-02 22:33:46 UTCView event →
M 4.714 km E of Barcelona, Philippines35.0 km2024-08-02 22:34:34 UTCView event →
M 4.516 km ESE of Barcelona, Philippines89.0 km2024-08-02 22:35:00 UTCView event →
M 4.840 km E of Santa Maria, Philippines66.3 km2024-08-02 22:35:23 UTCView event →
M 5.050 km NE of Kinablangan, Philippines45.8 km2024-08-02 22:36:20 UTCView event →
M 4.716 km NE of Barcelona, Philippines35.0 km2024-08-02 22:38:00 UTCView event →
M 4.638 km ENE of Santa Maria, Philippines35.0 km2024-08-02 22:41:06 UTCView event →
M 4.942 km NE of Kinablangan, Philippines64.4 km2024-08-02 22:46:00 UTCView event →
M 4.538 km NE of Kinablangan, Philippines80.1 km2024-08-02 22:48:59 UTCView event →
M 4.958 km E of Barcelona, Philippines35.0 km2024-08-02 23:36:09 UTCView event →
M 5.239 km ENE of Santa Maria, Philippines53.8 km2024-08-03 01:37:19 UTCView event →
M 5.332 km E of Santa Maria, Philippines83.7 km2024-08-03 01:38:21 UTCView event →
M 4.530 km E of Santa Maria, Philippines74.6 km2024-08-03 02:14:44 UTCView event →
M 4.947 km E of Santa Maria, Philippines35.0 km2024-08-03 03:17:12 UTCView event →
M 6.344 km E of Barcelona, Philippines15.0 km2024-08-03 04:20:26 UTCView event →
M 4.938 km ENE of Barcelona, Philippines63.5 km2024-08-03 09:12:55 UTCView event →
M 4.75 km NE of Barcelona, Philippines20.8 km2024-08-03 09:13:35 UTCView event →
M 4.526 km NE of Kinablangan, Philippines76.8 km2024-08-03 09:37:45 UTCView event →
M 4.521 km E of Barcelona, Philippines70.2 km2024-08-03 17:12:58 UTCView event →
M 4.532 km ENE of Santa Maria, Philippines74.0 km2024-08-03 22:06:10 UTCView event →
M 4.516 km ESE of Jovellar, Philippines170.9 km2024-08-04 08:46:42 UTCView event →
M 4.630 km NE of Kinablangan, Philippines66.4 km2024-08-04 19:12:07 UTCView event →
M 5.262 km E of Kinablangan, Philippines36.6 km2024-08-06 05:39:25 UTCView event →
M 4.899 km SSE of Pondaguitan, Philippines96.4 km2024-08-10 05:14:37 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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