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Sequence · 2018-10-16

M 6.5 · Observed seismic cluster · 171 km E of Tadine, New Caledonia

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 cluster57
M6+1
Analysis radius260 km
Observation window14 days
Largest secondary eventM 5.7
Quake Pulse · Strong sequence

What the sequence shows

After the M 6.5 reference event, Quake Pulse counts 44 M4+ event(s) in the first 24 hours and 52 in the first 7 days. Fourteen-day M4.5+ activity is about 4.1× the average equivalent derived from the previous year. The largest secondary event is M 0.8 below the reference event.

74/100Sequence score
Events in the previous 24 h3
In the first hour13
In the first 24 hours44
In the first 7 days52
Within 14 days56
Peak one-hour count13

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 d359Average 14-day equivalent13.8Activity / baseline ratio4.1×

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 0.8Observed duration12.8 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.

1 hour24 hours7 days14 days
171 km E of Tadine, New Caledonia · 260 kmInteractive 3D view of earthquakes within 260 km of 171 km E of Tadine, New Caledonia.171 km E of Tadine, New CaledoniaM 4.8 · 207 km E of Tadine, New Caledonia · 41.7 kmM 5.7 · 167 km E of Tadine, New Caledonia · 9.1 kmM 5.1 · 172 km E of Tadine, New Caledonia · 2.6 kmM 5.1 · 184 km E of Tadine, New Caledonia · 18.5 kmM 5.1 · 205 km ESE of Tadine, New Caledonia · 53.4 kmM 5.0 · 188 km E of Tadine, New Caledonia · 31.4 kmM 5.2 · 190 km ESE of Tadine, New Caledonia · 28.5 kmM 5.3 · 180 km E of Tadine, New Caledonia · 9.5 kmM 4.7 · 208 km E of Tadine, New Caledonia · 37.3 kmM 4.8 · 211 km ESE of Tadine, New Caledonia · 52.9 kmM 5.4 · 167 km E of Tadine, New Caledonia · 9.7 kmM 4.7 · 189 km E of Tadine, New Caledonia · 21.3 kmM 4.8 · 191 km ESE of Tadine, New Caledonia · 28.2 kmM 4.7 · 192 km E of Tadine, New Caledonia · 22.2 kmM 4.9 · 195 km ESE of Tadine, New Caledonia · 33.6 kmM 4.5 · 196 km E of Tadine, New Caledonia · 25.6 kmM 4.8 · 197 km E of Tadine, New Caledonia · 27.6 kmM 4.5 · 159 km ESE of Tadine, New Caledonia · 58.3 kmM 5.1 · 161 km ESE of Tadine, New Caledonia · 27.7 kmM 4.6 · 200 km E of Tadine, New Caledonia · 31.6 kmM 5.1 · 203 km ESE of Tadine, New Caledonia · 38.2 kmM 4.6 · 189 km ESE of Tadine, New Caledonia · 75.2 kmM 5.2 · 174 km E of Tadine, New Caledonia · 7.3 kmM 4.6 · 174 km E of Tadine, New Caledonia · 10.4 kmM 5.2 · 185 km ESE of Tadine, New Caledonia · 44.0 kmM 5.0 · 179 km ESE of Tadine, New Caledonia · 24.3 kmM 4.6 · 190 km E of Tadine, New Caledonia · 19.9 kmM 5.6 · 182 km ESE of Tadine, New Caledonia · 24.0 kmM 4.6 · 185 km ESE of Tadine, New Caledonia · 34.4 kmM 4.5 · 173 km E of Tadine, New Caledonia · 12.6 kmM 4.6 · 201 km ESE of Tadine, New Caledonia · 40.0 kmM 5.1 · 168 km E of Tadine, New Caledonia · 8.7 kmM 4.5 · 178 km E of Tadine, New Caledonia · 10.7 kmM 5.1 · 168 km E of Tadine, New Caledonia · 2.7 kmM 4.5 · 181 km E of Tadine, New Caledonia · 12.4 kmM 4.5 · 206 km ESE of Tadine, New Caledonia · 53.5 kmM 4.6 · 188 km ESE of Tadine, New Caledonia · 27.6 kmM 4.6 · 205 km ESE of Tadine, New Caledonia · 40.4 kmM 4.5 · 186 km ESE of Tadine, New Caledonia · 22.0 kmM 4.9 · 153 km E of Tadine, New Caledonia · 19.5 kmM 4.7 · 196 km E of Tadine, New Caledonia · 25.2 kmM 4.6 · 182 km ESE of Tadine, New Caledonia · 36.7 kmM 4.6 · 199 km ESE of Tadine, New Caledonia · 34.8 kmM 4.5 · 211 km ESE of Tadine, New Caledonia · 49.4 km
171 km E of Tadine, New Caledonia260 km44 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 · Tsunami indicator · Shallow

52/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.5171 km E of Tadine, New Caledonia17.0 km2018-10-16 01:03:43 UTCView event →
M 4.8207 km E of Tadine, New Caledonia10.0 km2018-10-16 01:14:09 UTCView event →
M 5.7167 km E of Tadine, New Caledonia10.0 km2018-10-16 01:14:35 UTCView event →
M 5.1172 km E of Tadine, New Caledonia10.0 km2018-10-16 01:17:52 UTCView event →
M 5.1184 km E of Tadine, New Caledonia10.0 km2018-10-16 01:18:52 UTCView event →
M 5.1205 km ESE of Tadine, New Caledonia10.0 km2018-10-16 01:20:55 UTCView event →
M 5.0188 km E of Tadine, New Caledonia10.0 km2018-10-16 01:22:40 UTCView event →
M 5.2190 km ESE of Tadine, New Caledonia10.0 km2018-10-16 01:29:02 UTCView event →
M 5.3180 km E of Tadine, New Caledonia10.0 km2018-10-16 01:31:24 UTCView event →
M 4.7208 km E of Tadine, New Caledonia10.0 km2018-10-16 01:33:49 UTCView event →
M 4.8211 km ESE of Tadine, New Caledonia10.0 km2018-10-16 01:36:08 UTCView event →
M 5.4167 km E of Tadine, New Caledonia10.0 km2018-10-16 01:38:23 UTCView event →
M 4.7189 km E of Tadine, New Caledonia10.0 km2018-10-16 01:48:24 UTCView event →
M 4.8191 km ESE of Tadine, New Caledonia10.0 km2018-10-16 01:57:38 UTCView event →
M 4.7192 km E of Tadine, New Caledonia10.0 km2018-10-16 02:10:10 UTCView event →
M 4.9195 km ESE of Tadine, New Caledonia10.0 km2018-10-16 02:24:05 UTCView event →
M 4.5196 km E of Tadine, New Caledonia10.0 km2018-10-16 02:27:50 UTCView event →
M 4.8197 km E of Tadine, New Caledonia10.0 km2018-10-16 02:28:57 UTCView event →
M 4.5159 km ESE of Tadine, New Caledonia10.0 km2018-10-16 02:56:33 UTCView event →
M 5.1161 km ESE of Tadine, New Caledonia10.0 km2018-10-16 03:03:27 UTCView event →
M 4.6200 km E of Tadine, New Caledonia10.0 km2018-10-16 03:08:57 UTCView event →
M 5.1203 km ESE of Tadine, New Caledonia10.0 km2018-10-16 03:14:31 UTCView event →
M 4.6189 km ESE of Tadine, New Caledonia10.0 km2018-10-16 03:21:24 UTCView event →
M 5.2174 km E of Tadine, New Caledonia10.0 km2018-10-16 03:32:44 UTCView event →
M 4.6174 km E of Tadine, New Caledonia10.0 km2018-10-16 03:58:03 UTCView event →
M 5.2185 km ESE of Tadine, New Caledonia10.0 km2018-10-16 04:08:57 UTCView event →
M 5.0179 km ESE of Tadine, New Caledonia10.0 km2018-10-16 04:21:21 UTCView event →
M 4.6190 km E of Tadine, New Caledonia10.0 km2018-10-16 04:29:18 UTCView event →
M 5.6182 km ESE of Tadine, New Caledonia10.0 km2018-10-16 04:42:41 UTCView event →
M 4.6185 km ESE of Tadine, New Caledonia10.0 km2018-10-16 04:49:46 UTCView event →
M 4.5173 km E of Tadine, New Caledonia10.0 km2018-10-16 04:58:41 UTCView event →
M 4.6201 km ESE of Tadine, New Caledonia10.0 km2018-10-16 05:28:23 UTCView event →
M 5.1168 km E of Tadine, New Caledonia10.0 km2018-10-16 05:34:51 UTCView event →
M 4.5178 km E of Tadine, New Caledonia10.0 km2018-10-16 06:14:41 UTCView event →
M 5.1168 km E of Tadine, New Caledonia10.0 km2018-10-16 06:49:49 UTCView event →
M 4.5181 km E of Tadine, New Caledonia10.0 km2018-10-16 07:21:46 UTCView event →
M 4.5206 km ESE of Tadine, New Caledonia10.0 km2018-10-16 08:03:17 UTCView event →
M 4.6188 km ESE of Tadine, New Caledonia10.0 km2018-10-16 08:08:16 UTCView event →
M 4.6205 km ESE of Tadine, New Caledonia10.0 km2018-10-16 08:38:38 UTCView event →
M 4.5186 km ESE of Tadine, New Caledonia10.0 km2018-10-16 09:07:24 UTCView event →
M 4.9153 km E of Tadine, New Caledonia10.0 km2018-10-16 10:29:17 UTCView event →
M 4.7196 km E of Tadine, New Caledonia10.0 km2018-10-16 10:50:26 UTCView event →
M 4.6182 km ESE of Tadine, New Caledonia10.0 km2018-10-16 15:55:07 UTCView event →
M 4.6199 km ESE of Tadine, New Caledonia6.5 km2018-10-16 16:50:22 UTCView event →
M 4.5211 km ESE of Tadine, New Caledonia10.0 km2018-10-16 19:05:01 UTCView event →
M 5.3179 km E of Tadine, New Caledonia10.0 km2018-10-17 01:23:08 UTCView event →
M 4.9258 km ESE of Tadine, New Caledonia10.0 km2018-10-17 04:35:47 UTCView event →
M 4.8232 km ESE of Tadine, New Caledonia10.0 km2018-10-17 06:01:19 UTCView event →
M 4.9southeast of the Loyalty Islands10.0 km2018-10-17 23:34:26 UTCView event →
M 4.6213 km ESE of Tadine, New Caledonia10.0 km2018-10-18 14:50:14 UTCView event →
M 4.9192 km ESE of Tadine, New Caledonia10.0 km2018-10-18 16:22:14 UTCView event →
M 4.9186 km ESE of Tadine, New Caledonia10.0 km2018-10-20 07:37:21 UTCView event →
M 4.7225 km ESE of Tadine, New Caledonia10.0 km2018-10-20 12:35:19 UTCView event →
M 5.3southeast of the Loyalty Islands53.5 km2018-10-23 04:38:09 UTCView event →
M 4.8183 km ESE of Tadine, New Caledonia10.0 km2018-10-23 08:20:11 UTCView event →
M 4.519 km ENE of Isangel, Vanuatu215.0 km2018-10-27 12:15:32 UTCView event →
M 5.0178 km SSE of Isangel, Vanuatu68.6 km2018-10-28 20:41:46 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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