Sequence · 2003-05-26

M 6.9 · Observed seismic cluster · 34 km W of Gadung, 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 cluster9
M6+1
Analysis radius324 km
Observation window14 days
Largest secondary eventM 5.9
Quake Pulse

Sequence timeline

Within first 24 hours7
Within first 7 days8
Observed duration9.2 d
Gap from reference eventM 1.0
0 h9.2 d
Quake Pulse

Main-event impact

Very deep

45/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.934 km W of Gadung, Philippines565.8 km2003-05-26 23:13:29 UTCView event →
M 5.915 km W of Gadung, Philippines583.5 km2003-05-26 23:26:31 UTCView event →
M 5.27 km WSW of Gadung, Philippines576.3 km2003-05-26 23:30:28 UTCView event →
M 4.540 km W of Gadung, Philippines620.5 km2003-05-26 23:49:41 UTCView event →
M 4.827 km W of Gadung, Philippines600.0 km2003-05-26 23:53:11 UTCView event →
M 4.525 km W of Gadung, Philippines582.9 km2003-05-27 05:31:16 UTCView event →
M 4.717 km NNW of Gadung, Philippines600.0 km2003-05-27 16:06:46 UTCView event →
M 5.4Mindanao, Philippines78.7 km2003-05-30 19:48:11 UTCView event →
M 4.747 km E of Sarangani, Philippines121.4 km2003-06-05 03:34:59 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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