Sequence · 2026-06-16

M 6.3 · Observed seismic cluster · 262 km SSE of Dunhuang, China

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 cluster18
M6+1
Analysis radius228 km
Observation window14 days
Largest secondary eventM 5.4
Quake Pulse · Major sequence

What the sequence shows

After the M 6.3 reference event, Quake Pulse counts 12 M4+ event(s) in the first 24 hours and 14 in the first 7 days. Fourteen-day M4.5+ activity is about 34.0× the average equivalent derived from the previous year. The largest secondary event is M 0.9 below the reference event.

80/100Sequence score
Events in the previous 24 h0
In the first hour4
In the first 24 hours12
In the first 7 days14
Within 14 days17
Peak one-hour count4

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 d3Average 14-day equivalent0.1Activity / baseline ratio34.0×

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 5.4Magnitude gapM 0.9Observed duration11.8 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

1 Felt reports · PAGER ORANGE · Shallow

60/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.3262 km SSE of Dunhuang, China10.0 km2026-06-16 09:06:55 UTCView event →
M 4.7268 km SSE of Dunhuang, China10.0 km2026-06-16 09:19:09 UTCView event →
M 4.9267 km WSW of Yanglong, China10.0 km2026-06-16 09:21:38 UTCView event →
M 5.1247 km SSE of Dunhuang, China10.0 km2026-06-16 09:42:35 UTCView event →
M 5.4272 km S of Dunhuang, China10.0 km2026-06-16 09:45:26 UTCView event →
M 4.5268 km S of Dunhuang, China10.0 km2026-06-16 10:59:01 UTCView event →
M 4.7249 km SSE of Dunhuang, China10.0 km2026-06-16 11:01:02 UTCView event →
M 4.5264 km S of Dunhuang, China10.0 km2026-06-16 11:05:39 UTCView event →
M 5.0262 km SSE of Dunhuang, China10.0 km2026-06-16 11:14:17 UTCView event →
M 4.9254 km S of Dunhuang, China12.6 km2026-06-16 13:27:36 UTCView event →
M 4.8268 km SSE of Dunhuang, China10.0 km2026-06-17 02:06:18 UTCView event →
M 4.6273 km SSE of Dunhuang, China10.0 km2026-06-17 05:11:11 UTCView event →
M 4.8272 km SSE of Dunhuang, China10.0 km2026-06-17 06:28:50 UTCView event →
M 5.2263 km WSW of Yanglong, China10.0 km2026-06-17 14:20:04 UTCView event →
M 4.5273 km SSE of Dunhuang, China10.0 km2026-06-18 07:11:58 UTCView event →
M 5.2263 km SSE of Dunhuang, China13.9 km2026-06-23 15:29:03 UTCView event →
M 4.5274 km SSE of Dunhuang, China10.0 km2026-06-23 15:56:34 UTCView event →
M 4.6254 km SSE of Dunhuang, China10.0 km2026-06-28 03:39:21 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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