Sequence · 2026-06-24

M 6.9 · Observed seismic cluster · 35 km ENE of Noda, Japan

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+2
Analysis radius324 km
Observation window14 days
Largest secondary eventM 6.0
Quake Pulse · Strong sequence

What the sequence shows

After the M 6.9 reference event, Quake Pulse counts 2 M4+ event(s) in the first 24 hours and 7 in the first 7 days. Fourteen-day M4.5+ activity is about 1.2× the average equivalent derived from the previous year. The largest secondary event is M 0.9 below the reference event.

71/100Sequence score
Events in the previous 24 h0
In the first hour0
In the first 24 hours2
In the first 7 days7
Within 14 days13
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 d288Average 14-day equivalent11.0Activity / baseline ratio1.2×

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 6.0Magnitude gapM 0.9Observed 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.

35 km ENE of Noda, Japan · 324 kmInteractive 3D view of earthquakes within 324 km of 35 km ENE of Noda, Japan.35 km ENE of Noda, JapanM 4.8 · 27 km NE of Kuji, Japan · 19.1 kmM 4.7 · 39 km NNE of Kuji, Japan · 31.5 km
35 km ENE of Noda, Japan324 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

95 Felt reports · PAGER YELLOW · Shallow

65/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.935 km ENE of Noda, Japan34.0 km2026-06-24 22:30:12 UTCView event →
M 4.827 km NE of Kuji, Japan69.9 km2026-06-25 11:58:33 UTCView event →
M 4.739 km NNE of Kuji, Japan61.7 km2026-06-25 16:11:44 UTCView event →
M 5.854 km ENE of Noda, Japan34.0 km2026-06-27 20:21:50 UTCView event →
M 4.546 km ENE of Noda, Japan53.1 km2026-06-28 05:39:32 UTCView event →
M 4.844 km ENE of Noda, Japan51.7 km2026-06-30 14:02:22 UTCView event →
M 6.054 km ENE of Noda, Japan35.0 km2026-07-01 12:08:29 UTCView event →
M 4.750 km ENE of Kuji, Japan57.7 km2026-07-01 16:15:33 UTCView event →
M 4.670 km ENE of Hachinohe, Japan55.8 km2026-07-02 04:48:21 UTCView event →
M 4.951 km ESE of Ōfunato, Japan51.0 km2026-07-03 01:44:52 UTCView event →
M 4.5100 km ENE of Misawa, Japan56.2 km2026-07-03 19:58:23 UTCView event →
M 4.627 km N of Kuji, Japan65.9 km2026-07-06 11:29:36 UTCView event →
M 4.649 km E of Noda, Japan54.9 km2026-07-06 17:09:03 UTCView event →
M 4.69 km NE of Kuji, Japan73.6 km2026-07-08 07:35:53 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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