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Sequence · 2016-12-08

M 7.8 · Observed seismic cluster · 69 km WSW of Kirakira, Solomon Islands

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 cluster188
M6+5
Analysis radius468 km
Observation window14 days
Largest secondary eventM 6.9
Quake Pulse · Major sequence

What the sequence shows

After the M 7.8 reference event, Quake Pulse counts 78 M4+ event(s) in the first 24 hours and 163 in the first 7 days. Fourteen-day M4.5+ activity is about 62.5× the average equivalent derived from the previous year. The largest secondary event is M 0.9 below the reference event.

100/100Sequence score
Events in the previous 24 h0
In the first hour7
In the first 24 hours78
In the first 7 days163
Within 14 days187
Peak one-hour count10

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 d78Average 14-day equivalent3.0Activity / baseline ratio62.5×

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 6.9Magnitude gapM 0.9Observed 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
69 km WSW of Kirakira, Solomon Islands · 468 kmInteractive 3D view of earthquakes within 468 km of 69 km WSW of Kirakira, Solomon Islands.69 km WSW of Kirakira, Solomon IslandsM 5.7 · 95 km WNW of Kirakira, Solomon Islands · 57.7 kmM 5.0 · 61 km SW of Kirakira, Solomon Islands · 39.0 kmM 4.9 · 41 km S of Kirakira, Solomon Islands · 69.5 kmM 5.2 · 71 km SW of Kirakira, Solomon Islands · 21.7 kmM 5.4 · 68 km W of Kirakira, Solomon Islands · 33.0 kmM 5.1 · 97 km WSW of Kirakira, Solomon Islands · 27.8 kmM 4.8 · Solomon Islands · 3.7 km
69 km WSW of Kirakira, Solomon Islands468 km7 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

28 Felt reports · PAGER GREEN · Tsunami indicator · Shallow

74/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 7.869 km WSW of Kirakira, Solomon Islands40.0 km2016-12-08 17:38:46 UTCView event →
M 5.795 km WNW of Kirakira, Solomon Islands35.0 km2016-12-08 17:46:23 UTCView event →
M 5.061 km SW of Kirakira, Solomon Islands35.0 km2016-12-08 17:48:12 UTCView event →
M 4.941 km S of Kirakira, Solomon Islands35.0 km2016-12-08 17:54:44 UTCView event →
M 5.271 km SW of Kirakira, Solomon Islands35.0 km2016-12-08 17:58:53 UTCView event →
M 5.468 km W of Kirakira, Solomon Islands42.8 km2016-12-08 18:03:05 UTCView event →
M 5.197 km WSW of Kirakira, Solomon Islands40.3 km2016-12-08 18:23:53 UTCView event →
M 4.8Solomon Islands22.4 km2016-12-08 18:28:52 UTCView event →
M 4.992 km SW of Kirakira, Solomon Islands35.0 km2016-12-08 18:48:59 UTCView event →
M 4.547 km W of Kirakira, Solomon Islands46.1 km2016-12-08 18:50:40 UTCView event →
M 5.063 km WSW of Kirakira, Solomon Islands34.8 km2016-12-08 18:52:16 UTCView event →
M 4.668 km W of Kirakira, Solomon Islands35.4 km2016-12-08 18:59:28 UTCView event →
M 4.773 km WSW of Kirakira, Solomon Islands35.0 km2016-12-08 18:59:55 UTCView event →
M 4.656 km SW of Kirakira, Solomon Islands25.2 km2016-12-08 19:02:46 UTCView event →
M 5.064 km SW of Kirakira, Solomon Islands35.0 km2016-12-08 19:03:33 UTCView event →
M 4.895 km W of Kirakira, Solomon Islands36.4 km2016-12-08 19:11:05 UTCView event →
M 5.169 km W of Kirakira, Solomon Islands37.7 km2016-12-08 19:15:38 UTCView event →
M 4.667 km W of Kirakira, Solomon Islands35.0 km2016-12-08 19:41:47 UTCView event →
M 5.199 km WSW of Kirakira, Solomon Islands37.0 km2016-12-08 19:57:53 UTCView event →
M 5.268 km SW of Kirakira, Solomon Islands43.6 km2016-12-08 20:03:11 UTCView event →
M 4.6110 km W of Kirakira, Solomon Islands35.0 km2016-12-08 20:35:07 UTCView event →
M 4.5121 km SSE of Kirakira, Solomon Islands35.0 km2016-12-08 20:40:43 UTCView event →
M 4.8115 km WNW of Kirakira, Solomon Islands35.0 km2016-12-08 20:47:45 UTCView event →
M 4.866 km W of Kirakira, Solomon Islands60.4 km2016-12-08 20:48:55 UTCView event →
M 5.2Solomon Islands48.2 km2016-12-08 20:50:27 UTCView event →
M 4.857 km WNW of Kirakira, Solomon Islands39.7 km2016-12-08 21:06:07 UTCView event →
M 5.064 km W of Kirakira, Solomon Islands50.7 km2016-12-08 21:30:01 UTCView event →
M 5.381 km WSW of Kirakira, Solomon Islands24.4 km2016-12-08 21:35:41 UTCView event →
M 5.0100 km W of Kirakira, Solomon Islands36.5 km2016-12-08 21:41:23 UTCView event →
M 4.560 km WSW of Kirakira, Solomon Islands36.0 km2016-12-08 21:46:53 UTCView event →
M 5.588 km WSW of Kirakira, Solomon Islands27.2 km2016-12-08 21:48:33 UTCView event →
M 6.579 km WSW of Kirakira, Solomon Islands12.3 km2016-12-08 21:56:07 UTCView event →
M 5.5111 km SW of Kirakira, Solomon Islands35.0 km2016-12-08 21:58:10 UTCView event →
M 5.462 km SW of Kirakira, Solomon Islands39.7 km2016-12-08 22:02:43 UTCView event →
M 4.5Solomon Islands35.0 km2016-12-08 22:11:37 UTCView event →
M 5.091 km SW of Kirakira, Solomon Islands42.2 km2016-12-08 22:49:29 UTCView event →
M 4.6127 km W of Kirakira, Solomon Islands10.0 km2016-12-08 23:07:34 UTCView event →
M 4.987 km W of Kirakira, Solomon Islands36.1 km2016-12-08 23:35:19 UTCView event →
M 4.553 km SW of Kirakira, Solomon Islands45.6 km2016-12-08 23:41:46 UTCView event →
M 4.563 km NNW of Kirakira, Solomon Islands29.0 km2016-12-09 00:21:27 UTCView event →
M 4.680 km W of Kirakira, Solomon Islands25.8 km2016-12-09 00:36:49 UTCView event →
M 4.966 km W of Kirakira, Solomon Islands52.9 km2016-12-09 00:42:07 UTCView event →
M 4.845 km W of Kirakira, Solomon Islands44.9 km2016-12-09 00:47:20 UTCView event →
M 4.871 km WSW of Kirakira, Solomon Islands36.1 km2016-12-09 00:47:53 UTCView event →
M 5.155 km WSW of Kirakira, Solomon Islands38.5 km2016-12-09 00:53:50 UTCView event →
M 4.568 km WSW of Kirakira, Solomon Islands35.0 km2016-12-09 00:58:01 UTCView event →
M 4.746 km SW of Kirakira, Solomon Islands40.8 km2016-12-09 01:01:48 UTCView event →
M 4.560 km W of Kirakira, Solomon Islands35.1 km2016-12-09 01:19:21 UTCView event →
M 4.882 km SW of Kirakira, Solomon Islands21.2 km2016-12-09 01:31:38 UTCView event →
M 5.3106 km SW of Kirakira, Solomon Islands10.0 km2016-12-09 01:58:55 UTCView event →
M 4.7145 km SW of Kirakira, Solomon Islands41.7 km2016-12-09 02:09:19 UTCView event →
M 5.199 km WSW of Kirakira, Solomon Islands14.6 km2016-12-09 02:46:10 UTCView event →
M 4.971 km W of Kirakira, Solomon Islands38.1 km2016-12-09 04:10:38 UTCView event →
M 4.876 km W of Kirakira, Solomon Islands16.6 km2016-12-09 04:25:09 UTCView event →
M 4.8100 km WSW of Kirakira, Solomon Islands25.9 km2016-12-09 04:27:34 UTCView event →
M 4.879 km SW of Kirakira, Solomon Islands15.0 km2016-12-09 04:34:59 UTCView event →
M 4.999 km SW of Kirakira, Solomon Islands31.6 km2016-12-09 05:05:00 UTCView event →
M 4.686 km SW of Kirakira, Solomon Islands10.0 km2016-12-09 05:10:01 UTCView event →
M 4.559 km WSW of Kirakira, Solomon Islands35.0 km2016-12-09 05:12:56 UTCView event →
M 4.790 km WSW of Kirakira, Solomon Islands22.4 km2016-12-09 05:30:14 UTCView event →
M 4.982 km WSW of Kirakira, Solomon Islands29.6 km2016-12-09 06:21:31 UTCView event →
M 5.179 km SW of Kirakira, Solomon Islands37.3 km2016-12-09 06:33:51 UTCView event →
M 4.770 km SW of Kirakira, Solomon Islands48.7 km2016-12-09 06:39:25 UTCView event →
M 4.890 km W of Kirakira, Solomon Islands18.7 km2016-12-09 06:41:12 UTCView event →
M 4.567 km W of Kirakira, Solomon Islands48.9 km2016-12-09 06:55:43 UTCView event →
M 4.980 km W of Kirakira, Solomon Islands35.6 km2016-12-09 07:03:33 UTCView event →
M 4.676 km W of Kirakira, Solomon Islands35.0 km2016-12-09 07:08:52 UTCView event →
M 4.5108 km W of Kirakira, Solomon Islands33.6 km2016-12-09 08:32:58 UTCView event →
M 4.756 km W of Kirakira, Solomon Islands43.9 km2016-12-09 08:38:47 UTCView event →
M 4.668 km SSW of Kirakira, Solomon Islands12.0 km2016-12-09 08:59:25 UTCView event →
M 5.353 km WSW of Kirakira, Solomon Islands21.0 km2016-12-09 09:10:24 UTCView event →
M 5.296 km WSW of Kirakira, Solomon Islands10.0 km2016-12-09 09:42:57 UTCView event →
M 4.659 km WSW of Kirakira, Solomon Islands34.3 km2016-12-09 11:38:13 UTCView event →
M 4.673 km W of Kirakira, Solomon Islands33.4 km2016-12-09 12:17:14 UTCView event →
M 5.288 km W of Kirakira, Solomon Islands17.0 km2016-12-09 12:50:26 UTCView event →
M 5.087 km WSW of Kirakira, Solomon Islands10.0 km2016-12-09 13:09:52 UTCView event →
M 4.770 km W of Kirakira, Solomon Islands42.8 km2016-12-09 13:28:15 UTCView event →
M 4.987 km WSW of Kirakira, Solomon Islands10.0 km2016-12-09 15:03:26 UTCView event →
M 5.282 km W of Kirakira, Solomon Islands33.9 km2016-12-09 17:24:41 UTCView event →
M 4.562 km W of Kirakira, Solomon Islands38.4 km2016-12-09 17:42:12 UTCView event →
M 5.499 km WSW of Kirakira, Solomon Islands35.2 km2016-12-09 17:55:51 UTCView event →
M 5.0100 km WSW of Kirakira, Solomon Islands30.1 km2016-12-09 18:11:59 UTCView event →
M 5.359 km W of Kirakira, Solomon Islands62.0 km2016-12-09 18:13:11 UTCView event →
M 4.548 km SW of Kirakira, Solomon Islands36.0 km2016-12-09 18:26:29 UTCView event →
M 6.992 km WSW of Kirakira, Solomon Islands19.7 km2016-12-09 19:10:06 UTCView event →
M 5.585 km SW of Kirakira, Solomon Islands39.0 km2016-12-09 19:13:22 UTCView event →
M 5.2113 km WSW of Kirakira, Solomon Islands10.0 km2016-12-09 19:15:39 UTCView event →
M 4.792 km SW of Kirakira, Solomon Islands35.0 km2016-12-09 19:18:16 UTCView event →
M 5.088 km SSW of Kirakira, Solomon Islands41.3 km2016-12-09 19:21:50 UTCView event →
M 4.5141 km W of Kirakira, Solomon Islands35.0 km2016-12-09 19:26:13 UTCView event →
M 5.0109 km WSW of Kirakira, Solomon Islands35.1 km2016-12-09 19:27:46 UTCView event →
M 5.0101 km SW of Kirakira, Solomon Islands33.8 km2016-12-09 19:34:56 UTCView event →
M 4.794 km WSW of Kirakira, Solomon Islands10.0 km2016-12-09 19:37:49 UTCView event →
M 5.390 km WSW of Kirakira, Solomon Islands34.2 km2016-12-09 19:38:34 UTCView event →
M 5.987 km SW of Kirakira, Solomon Islands18.4 km2016-12-09 19:43:24 UTCView event →
M 4.590 km SW of Kirakira, Solomon Islands34.9 km2016-12-09 19:49:35 UTCView event →
M 4.887 km WSW of Kirakira, Solomon Islands10.0 km2016-12-09 19:56:26 UTCView event →
M 4.689 km SW of Kirakira, Solomon Islands10.0 km2016-12-09 20:00:22 UTCView event →
M 4.578 km SSE of Kirakira, Solomon Islands10.0 km2016-12-09 20:12:26 UTCView event →
M 4.6116 km WSW of Kirakira, Solomon Islands15.9 km2016-12-09 20:34:30 UTCView event →
M 5.187 km SW of Kirakira, Solomon Islands10.0 km2016-12-09 20:35:13 UTCView event →
M 5.075 km SW of Kirakira, Solomon Islands29.8 km2016-12-09 20:44:44 UTCView event →
M 4.6121 km SSE of Kirakira, Solomon Islands10.0 km2016-12-09 21:12:55 UTCView event →
M 5.095 km WSW of Kirakira, Solomon Islands10.0 km2016-12-09 21:33:17 UTCView event →
M 5.882 km SW of Kirakira, Solomon Islands10.0 km2016-12-09 21:38:23 UTCView event →
M 4.5142 km SE of Malango, Solomon Islands10.0 km2016-12-09 22:11:30 UTCView event →
M 4.8115 km W of Kirakira, Solomon Islands22.3 km2016-12-09 22:34:32 UTCView event →
M 4.877 km SW of Kirakira, Solomon Islands49.2 km2016-12-09 23:22:01 UTCView event →
M 5.565 km W of Kirakira, Solomon Islands48.6 km2016-12-09 23:39:43 UTCView event →
M 4.755 km W of Kirakira, Solomon Islands56.5 km2016-12-10 00:23:45 UTCView event →
M 4.780 km WSW of Kirakira, Solomon Islands45.1 km2016-12-10 00:45:48 UTCView event →
M 4.673 km W of Kirakira, Solomon Islands49.2 km2016-12-10 00:50:56 UTCView event →
M 5.666 km W of Kirakira, Solomon Islands51.8 km2016-12-10 02:38:22 UTCView event →
M 5.884 km SW of Kirakira, Solomon Islands7.7 km2016-12-10 02:45:39 UTCView event →
M 5.088 km WSW of Kirakira, Solomon Islands44.0 km2016-12-10 03:28:10 UTCView event →
M 4.689 km WSW of Kirakira, Solomon Islands27.2 km2016-12-10 04:19:09 UTCView event →
M 4.5104 km WNW of Kirakira, Solomon Islands63.8 km2016-12-10 06:33:26 UTCView event →
M 4.871 km WSW of Kirakira, Solomon Islands33.3 km2016-12-10 07:25:59 UTCView event →
M 4.6132 km WSW of Kirakira, Solomon Islands28.5 km2016-12-10 07:35:23 UTCView event →
M 4.5121 km WSW of Kirakira, Solomon Islands10.0 km2016-12-10 07:39:35 UTCView event →
M 4.785 km SW of Kirakira, Solomon Islands10.0 km2016-12-10 08:18:24 UTCView event →
M 4.669 km WSW of Kirakira, Solomon Islands18.5 km2016-12-10 08:32:56 UTCView event →
M 4.56 km SSW of Kirakira, Solomon Islands10.0 km2016-12-10 10:21:48 UTCView event →
M 4.573 km SSW of Kirakira, Solomon Islands18.2 km2016-12-10 11:59:35 UTCView event →
M 5.175 km W of Kirakira, Solomon Islands27.3 km2016-12-10 12:17:09 UTCView event →
M 4.973 km SSW of Kirakira, Solomon Islands35.3 km2016-12-10 12:48:54 UTCView event →
M 5.132 km SSW of Kirakira, Solomon Islands10.0 km2016-12-10 13:22:23 UTCView event →
M 4.765 km W of Kirakira, Solomon Islands10.0 km2016-12-10 13:38:37 UTCView event →
M 4.964 km WNW of Kirakira, Solomon Islands10.0 km2016-12-10 13:42:05 UTCView event →
M 4.947 km WSW of Kirakira, Solomon Islands10.0 km2016-12-10 17:40:27 UTCView event →
M 4.565 km W of Kirakira, Solomon Islands35.0 km2016-12-10 19:13:33 UTCView event →
M 4.784 km SW of Kirakira, Solomon Islands26.0 km2016-12-10 19:43:37 UTCView event →
M 5.062 km W of Kirakira, Solomon Islands36.5 km2016-12-10 20:08:10 UTCView event →
M 4.689 km SW of Kirakira, Solomon Islands10.0 km2016-12-10 20:09:19 UTCView event →
M 4.669 km W of Kirakira, Solomon Islands34.4 km2016-12-11 00:11:32 UTCView event →
M 4.575 km S of Kirakira, Solomon Islands28.5 km2016-12-11 00:34:12 UTCView event →
M 4.559 km WSW of Kirakira, Solomon Islands35.0 km2016-12-11 00:45:32 UTCView event →
M 4.783 km SSE of Kirakira, Solomon Islands26.2 km2016-12-11 01:17:41 UTCView event →
M 4.5170 km SSW of Kirakira, Solomon Islands35.2 km2016-12-11 01:27:14 UTCView event →
M 4.569 km SSW of Kirakira, Solomon Islands15.6 km2016-12-11 09:02:01 UTCView event →
M 5.3121 km W of Kirakira, Solomon Islands35.3 km2016-12-11 09:32:00 UTCView event →
M 4.693 km WSW of Kirakira, Solomon Islands10.0 km2016-12-11 16:19:12 UTCView event →
M 5.568 km SW of Kirakira, Solomon Islands10.0 km2016-12-11 17:26:09 UTCView event →
M 4.9107 km WSW of Kirakira, Solomon Islands10.0 km2016-12-11 20:17:12 UTCView event →
M 5.0100 km SW of Kirakira, Solomon Islands10.0 km2016-12-11 20:17:37 UTCView event →
M 5.071 km SW of Kirakira, Solomon Islands10.2 km2016-12-11 21:39:05 UTCView event →
M 4.5210 km W of Lata, Solomon Islands10.0 km2016-12-12 20:10:11 UTCView event →
M 4.7114 km WSW of Kirakira, Solomon Islands36.9 km2016-12-13 03:17:06 UTCView event →
M 5.249 km WNW of Kirakira, Solomon Islands35.0 km2016-12-13 03:46:16 UTCView event →
M 4.991 km WSW of Kirakira, Solomon Islands41.9 km2016-12-13 05:19:38 UTCView event →
M 5.289 km WSW of Kirakira, Solomon Islands12.0 km2016-12-13 05:38:49 UTCView event →
M 4.550 km SSW of Kirakira, Solomon Islands45.5 km2016-12-13 12:12:07 UTCView event →
M 5.082 km W of Kirakira, Solomon Islands21.7 km2016-12-13 15:50:29 UTCView event →
M 4.5120 km W of Kirakira, Solomon Islands10.0 km2016-12-13 17:39:53 UTCView event →
M 4.7115 km W of Buala, Solomon Islands46.9 km2016-12-13 22:10:45 UTCView event →
M 4.576 km W of Kirakira, Solomon Islands48.6 km2016-12-13 23:39:55 UTCView event →
M 4.756 km W of Kirakira, Solomon Islands47.8 km2016-12-14 01:35:02 UTCView event →
M 5.459 km W of Kirakira, Solomon Islands41.2 km2016-12-14 03:24:07 UTCView event →
M 4.845 km WSW of Kirakira, Solomon Islands46.9 km2016-12-14 05:14:24 UTCView event →
M 5.454 km WNW of Kirakira, Solomon Islands35.0 km2016-12-14 16:34:58 UTCView event →
M 4.6113 km SW of Kirakira, Solomon Islands23.4 km2016-12-15 04:44:08 UTCView event →
M 4.670 km WSW of Kirakira, Solomon Islands50.4 km2016-12-15 07:19:41 UTCView event →
M 4.869 km W of Kirakira, Solomon Islands35.2 km2016-12-15 09:20:24 UTCView event →
M 4.559 km WSW of Kirakira, Solomon Islands10.0 km2016-12-15 13:43:06 UTCView event →
M 5.481 km SE of Honiara, Solomon Islands16.2 km2016-12-15 22:23:26 UTCView event →
M 4.994 km SE of Honiara, Solomon Islands10.0 km2016-12-15 23:32:22 UTCView event →
M 4.528 km SW of Kirakira, Solomon Islands37.8 km2016-12-16 01:33:14 UTCView event →
M 4.7104 km ESE of Honiara, Solomon Islands10.0 km2016-12-16 09:17:16 UTCView event →
M 4.758 km WSW of Kirakira, Solomon Islands38.8 km2016-12-16 09:38:19 UTCView event →
M 5.982 km WNW of Kirakira, Solomon Islands39.0 km2016-12-18 05:46:25 UTCView event →
M 4.658 km W of Kirakira, Solomon Islands45.4 km2016-12-18 07:00:09 UTCView event →
M 5.4147 km W of Lata, Solomon Islands40.1 km2016-12-18 09:57:38 UTCView event →
M 5.381 km WNW of Kirakira, Solomon Islands59.2 km2016-12-18 11:35:48 UTCView event →
M 4.573 km WNW of Kirakira, Solomon Islands63.0 km2016-12-18 22:47:23 UTCView event →
M 6.481 km WNW of Kirakira, Solomon Islands20.0 km2016-12-20 04:21:29 UTCView event →
M 5.2105 km WNW of Kirakira, Solomon Islands36.5 km2016-12-20 08:11:33 UTCView event →
M 5.3105 km WNW of Kirakira, Solomon Islands19.4 km2016-12-20 08:49:23 UTCView event →
M 4.596 km WNW of Kirakira, Solomon Islands10.0 km2016-12-20 12:29:08 UTCView event →
M 6.0114 km WNW of Kirakira, Solomon Islands10.0 km2016-12-20 12:33:14 UTCView event →
M 4.8105 km WNW of Kirakira, Solomon Islands23.8 km2016-12-20 12:41:27 UTCView event →
M 4.8106 km WNW of Kirakira, Solomon Islands10.0 km2016-12-20 13:08:11 UTCView event →
M 4.5104 km WNW of Kirakira, Solomon Islands10.5 km2016-12-20 13:30:32 UTCView event →
M 4.855 km W of Kirakira, Solomon Islands47.3 km2016-12-20 13:58:58 UTCView event →
M 4.997 km WNW of Kirakira, Solomon Islands36.9 km2016-12-20 17:24:30 UTCView event →
M 4.6106 km WNW of Kirakira, Solomon Islands18.3 km2016-12-20 17:26:52 UTCView event →
M 5.5121 km SE of Honiara, Solomon Islands10.4 km2016-12-20 20:07:52 UTCView event →
M 5.1110 km SE of Honiara, Solomon Islands35.4 km2016-12-20 23:22:03 UTCView event →
M 4.680 km WSW of Kirakira, Solomon Islands27.6 km2016-12-22 08:36:38 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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