Sequence · 2015-11-18

M 6.8 · Observed seismic cluster · 153 km WSW of Buala, Solomon Islands

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 cluster4
M6+1
Analysis radius308 km
Observation window14 days
Largest secondary eventM 5.1
Quake Pulse

Sequence timeline

Within first 24 hours3
Within first 7 days4
Observed duration3.4 d
Gap from reference eventM 1.7
0 h3.4 d
Quake Pulse

Main-event impact

6 Felt reports · PAGER GREEN · Tsunami indicator · Shallow

63/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.8153 km WSW of Buala, Solomon Islands12.6 km2015-11-18 18:31:04 UTCView event →
M 5.1150 km WNW of Malango, Solomon Islands10.0 km2015-11-18 18:53:55 UTCView event →
M 4.5147 km WNW of Malango, Solomon Islands10.0 km2015-11-18 19:31:58 UTCView event →
M 4.9130 km SE of Gizo, Solomon Islands28.9 km2015-11-22 02:57:53 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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