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Sequence · 2025-08-09

M 6.0 · Observed seismic cluster · 265 km ESE of Severo-Kuril’sk, 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 cluster62
M6+1
Analysis radius180 km
Observation window14 days
Largest secondary eventM 5.2
Quake Pulse · Notable sequence

What the sequence shows

After the M 6.0 reference event, Quake Pulse counts 13 M4+ event(s) in the first 24 hours and 50 in the first 7 days. Fourteen-day M4.5+ activity is about 3.7× the average equivalent derived from the previous year. The largest secondary event is M 0.6 below the reference event.

59/100Sequence score
Events in the previous 24 h7
In the first hour0
In the first 24 hours13
In the first 7 days50
Within 14 days67
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 d469Average 14-day equivalent18.0Activity / baseline ratio3.7×

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 0.6Observed duration13.6 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
265 km ESE of Severo-Kuril’sk, Russia · 180 kmInteractive 3D view of earthquakes within 180 km of 265 km ESE of Severo-Kuril’sk, Russia.265 km ESE of Severo-Kuril’sk, RussiaM 4.6 · 275 km ESE of Severo-Kuril’sk, Russia · 12.9 kmM 4.5 · 146 km SE of Severo-Kuril’sk, Russia · 160.1 kmM 4.6 · 173 km SE of Vilyuchinsk, Russia · 177.9 kmM 4.5 · 169 km E of Severo-Kuril’sk, Russia · 98.0 kmM 4.6 · 214 km SSE of Vilyuchinsk, Russia · 119.8 kmM 4.9 · 183 km SSE of Vilyuchinsk, Russia · 156.5 kmM 4.8 · 158 km SSE of Vilyuchinsk, Russia · 179.6 kmM 4.6 · 259 km ESE of Severo-Kuril’sk, Russia · 6.0 kmM 4.5 · 200 km SE of Severo-Kuril’sk, Russia · 148.9 kmM 4.7 · 181 km SSE of Vilyuchinsk, Russia · 161.9 kmM 4.5 · 254 km ESE of Severo-Kuril’sk, Russia · 16.8 kmM 5.1 · 187 km SSE of Vilyuchinsk, Russia · 153.8 kmM 5.0 · 69 km ESE of Ozernovskiy, Russia · 212.9 km
265 km ESE of Severo-Kuril’sk, Russia180 km13 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

34/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.0265 km ESE of Severo-Kuril’sk, Russia11.0 km2025-08-09 14:04:07 UTCView event →
M 4.6275 km ESE of Severo-Kuril’sk, Russia10.0 km2025-08-09 15:36:05 UTCView event →
M 4.5146 km SE of Severo-Kuril’sk, Russia10.0 km2025-08-09 18:30:48 UTCView event →
M 4.6173 km SE of Vilyuchinsk, Russia21.4 km2025-08-09 19:14:46 UTCView event →
M 4.5169 km E of Severo-Kuril’sk, Russia50.7 km2025-08-09 20:53:11 UTCView event →
M 4.6214 km SSE of Vilyuchinsk, Russia10.0 km2025-08-09 23:11:56 UTCView event →
M 4.9183 km SSE of Vilyuchinsk, Russia19.5 km2025-08-10 02:39:25 UTCView event →
M 4.8158 km SSE of Vilyuchinsk, Russia30.3 km2025-08-10 02:44:21 UTCView event →
M 4.6259 km ESE of Severo-Kuril’sk, Russia10.0 km2025-08-10 03:11:49 UTCView event →
M 4.5200 km SE of Severo-Kuril’sk, Russia10.0 km2025-08-10 03:53:46 UTCView event →
M 4.7181 km SSE of Vilyuchinsk, Russia10.0 km2025-08-10 04:04:00 UTCView event →
M 4.5254 km ESE of Severo-Kuril’sk, Russia10.0 km2025-08-10 05:12:49 UTCView event →
M 5.1187 km SSE of Vilyuchinsk, Russia13.9 km2025-08-10 06:59:35 UTCView event →
M 5.069 km ESE of Ozernovskiy, Russia75.0 km2025-08-10 11:19:18 UTCView event →
M 4.8194 km ESE of Severo-Kuril’sk, Russia10.0 km2025-08-10 16:58:04 UTCView event →
M 4.5227 km SSE of Vilyuchinsk, Russia10.0 km2025-08-11 06:37:52 UTCView event →
M 4.7199 km SSE of Vilyuchinsk, Russia10.0 km2025-08-11 13:24:39 UTCView event →
M 4.8179 km SE of Vilyuchinsk, Russia10.0 km2025-08-11 19:52:26 UTCView event →
M 5.0173 km SSE of Vilyuchinsk, Russia10.0 km2025-08-11 21:02:38 UTCView event →
M 4.8187 km SSE of Vilyuchinsk, Russia10.0 km2025-08-11 21:12:05 UTCView event →
M 4.5259 km SE of Vilyuchinsk, Russia10.0 km2025-08-11 23:45:41 UTCView event →
M 4.9104 km E of Ozernovskiy, Russia60.8 km2025-08-12 02:07:15 UTCView event →
M 4.5147 km SE of Severo-Kuril’sk, Russia10.0 km2025-08-12 03:34:44 UTCView event →
M 4.8193 km E of Ozernovskiy, Russia10.0 km2025-08-12 07:28:15 UTCView event →
M 4.8263 km SE of Vilyuchinsk, Russia10.0 km2025-08-12 08:22:27 UTCView event →
M 4.5184 km SSE of Vilyuchinsk, Russia35.0 km2025-08-12 10:02:06 UTCView event →
M 4.6194 km ESE of Severo-Kuril’sk, Russia10.0 km2025-08-12 12:57:44 UTCView event →
M 4.5257 km SE of Vilyuchinsk, Russia10.0 km2025-08-12 14:45:47 UTCView event →
M 4.6157 km SSE of Vilyuchinsk, Russia33.3 km2025-08-12 16:00:04 UTCView event →
M 4.8175 km E of Severo-Kuril’sk, Russia10.0 km2025-08-12 19:06:53 UTCView event →
M 5.1219 km ESE of Severo-Kuril’sk, Russia10.4 km2025-08-12 20:24:00 UTCView event →
M 4.6179 km ESE of Severo-Kuril’sk, Russia10.0 km2025-08-12 22:26:04 UTCView event →
M 4.9214 km E of Severo-Kuril’sk, Russia10.0 km2025-08-12 23:52:04 UTCView event →
M 4.6243 km ESE of Severo-Kuril’sk, Russia10.0 km2025-08-13 07:38:27 UTCView event →
M 4.5242 km ESE of Severo-Kuril’sk, Russia10.0 km2025-08-13 11:00:17 UTCView event →
M 5.2201 km SSE of Vilyuchinsk, Russia10.0 km2025-08-13 11:40:30 UTCView event →
M 4.6202 km E of Severo-Kuril’sk, Russia10.0 km2025-08-13 12:43:32 UTCView event →
M 4.6177 km SSE of Vilyuchinsk, Russia35.0 km2025-08-13 13:28:53 UTCView event →
M 4.9221 km E of Severo-Kuril’sk, Russia10.0 km2025-08-13 14:18:04 UTCView event →
M 4.7143 km E of Severo-Kuril’sk, Russia27.7 km2025-08-13 15:35:59 UTCView event →
M 4.671 km SE of Ozernovskiy, Russia80.2 km2025-08-13 21:31:37 UTCView event →
M 4.5155 km ESE of Severo-Kuril’sk, Russia10.0 km2025-08-13 23:11:56 UTCView event →
M 4.5176 km ESE of Severo-Kuril’sk, Russia19.2 km2025-08-13 23:42:36 UTCView event →
M 4.579 km ESE of Ozernovskiy, Russia69.8 km2025-08-14 07:19:36 UTCView event →
M 4.5186 km ESE of Severo-Kuril’sk, Russia10.0 km2025-08-14 20:02:15 UTCView event →
M 4.9119 km E of Severo-Kuril’sk, Russia35.0 km2025-08-14 23:12:39 UTCView event →
M 4.8208 km SSE of Vilyuchinsk, Russia10.0 km2025-08-15 05:25:16 UTCView event →
M 4.6178 km SSE of Vilyuchinsk, Russia25.7 km2025-08-15 06:27:43 UTCView event →
M 4.5208 km ESE of Severo-Kuril’sk, Russia10.0 km2025-08-15 18:54:03 UTCView event →
M 4.5187 km ESE of Severo-Kuril’sk, Russia27.9 km2025-08-16 05:56:58 UTCView event →
M 4.5167 km SSE of Vilyuchinsk, Russia35.0 km2025-08-16 08:33:57 UTCView event →
M 4.5246 km ESE of Severo-Kuril’sk, Russia10.0 km2025-08-17 13:59:19 UTCView event →
M 4.6196 km SSE of Vilyuchinsk, Russia13.3 km2025-08-18 03:30:57 UTCView event →
M 5.0199 km SSE of Vilyuchinsk, Russia9.7 km2025-08-18 10:12:48 UTCView event →
M 4.9180 km SSE of Vilyuchinsk, Russia10.0 km2025-08-18 11:55:34 UTCView event →
M 4.6122 km SE of Severo-Kuril’sk, Russia26.7 km2025-08-18 15:10:57 UTCView event →
M 4.6206 km ESE of Severo-Kuril’sk, Russia10.0 km2025-08-19 19:41:10 UTCView event →
M 4.7118 km E of Severo-Kuril’sk, Russia35.0 km2025-08-20 16:44:09 UTCView event →
M 4.9184 km SE of Vilyuchinsk, Russia28.2 km2025-08-21 03:44:52 UTCView event →
M 4.5146 km SE of Severo-Kuril’sk, Russia10.0 km2025-08-21 05:35:47 UTCView event →
M 4.8192 km SSE of Vilyuchinsk, Russia37.0 km2025-08-21 19:40:22 UTCView event →
M 4.5166 km SSE of Vilyuchinsk, Russia66.8 km2025-08-21 20:17:32 UTCView event →
M 4.577 km ESE of Ozernovskiy, Russia83.9 km2025-08-22 00:52:23 UTCView event →
M 4.6193 km SSE of Vilyuchinsk, Russia10.0 km2025-08-22 05:40:04 UTCView event →
M 4.8223 km ESE of Severo-Kuril’sk, Russia10.0 km2025-08-22 08:15:57 UTCView event →
M 5.0196 km SSE of Vilyuchinsk, Russia40.4 km2025-08-22 15:57:40 UTCView event →
M 4.6119 km SE of Severo-Kuril’sk, Russia27.1 km2025-08-23 01:57:34 UTCView event →
M 5.485 km E of Severo-Kuril’sk, Russia45.0 km2025-08-23 03:44:13 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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