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Sequence · 2026-02-16

M 6.0 · Observed seismic cluster · 87 km ESE of Ozernovskiy, Russia

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 cluster14
M6+1
Analysis radius180 km
Observation window14 days
Largest secondary eventM 5.7
Quake Pulse · Notable sequence

What the sequence shows

After the M 6.0 reference event, Quake Pulse counts 1 M4+ event(s) in the first 24 hours and 1 in the first 7 days. Fourteen-day M4.5+ activity is about 0.3× the average equivalent derived from the previous year. The largest secondary event is M 0.3 below the reference event.

55/100Sequence score
Events in the previous 24 h0
In the first hour0
In the first 24 hours1
In the first 7 days1
Within 14 days13
Peak one-hour count3

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 d1,074Average 14-day equivalent41.2Activity / baseline ratio0.3×

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 5.7Magnitude gapM 0.3Observed duration13.4 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.

1 hour24 hours7 days14 days
87 km ESE of Ozernovskiy, Russia · 180 kmInteractive 3D view of earthquakes within 180 km of 87 km ESE of Ozernovskiy, Russia.87 km ESE of Ozernovskiy, RussiaM 4.5 · 151 km SSE of Vilyuchinsk, Russia · 104.7 km
87 km ESE of Ozernovskiy, Russia180 km1 Recent earthquakes

Detailed timeline

Dots represent M4+ events retained by the sequence detector. Dot size depends on magnitude.

0 h24 h7 d14 d

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

PAGER GREEN · Shallow

35/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.087 km ESE of Ozernovskiy, Russia43.0 km2026-02-16 21:42:52 UTCView event →
M 4.5151 km SSE of Vilyuchinsk, Russia39.8 km2026-02-17 20:01:38 UTCView event →
M 5.7190 km SSE of Vilyuchinsk, Russia18.0 km2026-02-26 04:59:03 UTCView event →
M 4.5181 km SSE of Vilyuchinsk, Russia10.0 km2026-02-26 05:30:34 UTCView event →
M 4.5201 km SSE of Vilyuchinsk, Russia10.0 km2026-02-26 05:57:45 UTCView event →
M 4.9179 km SSE of Vilyuchinsk, Russia35.0 km2026-02-26 05:58:51 UTCView event →
M 4.6186 km SSE of Vilyuchinsk, Russia10.0 km2026-02-26 06:07:30 UTCView event →
M 5.184 km SSE of Severo-Kuril’sk, Russia42.5 km2026-02-26 07:04:24 UTCView event →
M 4.6168 km SSE of Vilyuchinsk, Russia35.0 km2026-02-26 18:57:51 UTCView event →
M 4.5177 km SSE of Vilyuchinsk, Russia10.0 km2026-02-27 22:44:37 UTCView event →
M 5.0157 km SE of Vilyuchinsk, Russia28.4 km2026-03-01 19:38:38 UTCView event →
M 4.7161 km SE of Vilyuchinsk, Russia10.0 km2026-03-01 19:42:16 UTCView event →
M 4.8167 km SE of Vilyuchinsk, Russia35.0 km2026-03-02 04:35:52 UTCView event →
M 4.6169 km SSE of Vilyuchinsk, Russia35.0 km2026-03-02 08:15:13 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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