Sequence · 2012-08-31

M 7.6 · Observed seismic cluster · 89 km E of Sulangan, Philippines

Name: M 7.6 · Observed seismic cluster · 89 km E of Sulangan, Philippines | Quake Pulse
Creator: Quake Pulse

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 cluster160

M6+1

Analysis radius436 km

Observation window14 days

Largest secondary eventM 5.7

Quake Pulse · Major sequence

What the sequence shows

After the M 7.6 reference event, Quake Pulse counts 66 M4+ event(s) in the first 24 hours and 131 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 1.9 below the reference event.

94/100Sequence score

Events in the previous 24 h0

In the first hour17

In the first 24 hours66

In the first 7 days131

Within 14 days159

Peak one-hour count17

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 d122Average 14-day equivalent4.7Activity / 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 5.7Magnitude gapM 1.9Observed duration13.8 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 hour 24 hours 7 days 14 days

89 km E of Sulangan, Philippines436 km66 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

287 Felt reports · Shallow

69/100

Impact and context →

M4.5+ events in cluster

Magnitude	Location	Depth	Time
M 7.6	89 km E of Sulangan, Philippines	28.0 km	2012-08-31 12:47:33 UTC	View event →
M 4.8	143 km E of Sulangan, Philippines	35.0 km	2012-08-31 13:02:10 UTC	View event →
M 4.8	106 km NE of Santa Monica, Philippines	35.0 km	2012-08-31 13:05:15 UTC	View event →
M 4.9	103 km NE of Santa Monica, Philippines	35.0 km	2012-08-31 13:06:20 UTC	View event →
M 4.9	102 km NE of Santa Monica, Philippines	35.0 km	2012-08-31 13:08:22 UTC	View event →
M 4.7	99 km E of Union, Philippines	35.0 km	2012-08-31 13:10:41 UTC	View event →
M 5.3	114 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 13:14:59 UTC	View event →
M 5.2	89 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 13:16:14 UTC	View event →
M 4.9	97 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 13:17:48 UTC	View event →
M 5.4	106 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 13:27:31 UTC	View event →
M 4.5	104 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 13:30:36 UTC	View event →
M 5.2	107 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 13:31:37 UTC	View event →
M 4.9	106 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 13:36:32 UTC	View event →
M 4.7	110 km E of Sulangan, Philippines	35.0 km	2012-08-31 13:37:31 UTC	View event →
M 4.9	99 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 13:39:15 UTC	View event →
M 4.9	97 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 13:40:32 UTC	View event →
M 4.5	123 km E of Pilar, Philippines	35.0 km	2012-08-31 13:43:55 UTC	View event →
M 4.5	92 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 13:45:15 UTC	View event →
M 4.7	115 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 13:48:08 UTC	View event →
M 4.9	85 km NE of Santa Monica, Philippines	35.0 km	2012-08-31 14:16:02 UTC	View event →
M 4.6	85 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 14:28:01 UTC	View event →
M 4.5	107 km E of Sulangan, Philippines	35.0 km	2012-08-31 14:38:43 UTC	View event →
M 4.5	93 km ESE of Sulangan, Philippines	35.0 km	2012-08-31 14:44:53 UTC	View event →
M 4.9	98 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 14:59:57 UTC	View event →
M 4.5	101 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 15:21:52 UTC	View event →
M 4.9	102 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 15:24:05 UTC	View event →
M 4.6	106 km NE of Santa Monica, Philippines	35.0 km	2012-08-31 15:59:27 UTC	View event →
M 4.6	90 km NE of Santa Monica, Philippines	35.0 km	2012-08-31 16:00:06 UTC	View event →
M 4.6	99 km ENE of Pilar, Philippines	35.0 km	2012-08-31 16:26:44 UTC	View event →
M 5.1	96 km E of Sulangan, Philippines	35.0 km	2012-08-31 16:55:11 UTC	View event →
M 4.5	56 km NE of Santa Monica, Philippines	35.0 km	2012-08-31 17:47:01 UTC	View event →
M 4.5	136 km E of Sulangan, Philippines	35.0 km	2012-08-31 17:53:57 UTC	View event →
M 4.5	154 km E of Sulangan, Philippines	35.0 km	2012-08-31 18:34:40 UTC	View event →
M 4.6	107 km ENE of Santa Monica, Philippines	35.0 km	2012-08-31 19:08:51 UTC	View event →
M 4.5	114 km NE of Santa Monica, Philippines	35.0 km	2012-08-31 19:12:10 UTC	View event →
M 4.6	71 km NE of Santa Monica, Philippines	35.0 km	2012-08-31 19:17:49 UTC	View event →
M 4.9	106 km NE of Santa Monica, Philippines	40.3 km	2012-08-31 19:41:03 UTC	View event →
M 5.2	101 km ESE of Sulangan, Philippines	35.8 km	2012-08-31 20:26:49 UTC	View event →
M 4.5	166 km E of Sulangan, Philippines	35.0 km	2012-08-31 21:14:26 UTC	View event →
M 4.9	93 km NE of Santa Monica, Philippines	44.5 km	2012-08-31 21:22:31 UTC	View event →
M 5.1	113 km E of Sulangan, Philippines	35.0 km	2012-08-31 22:01:20 UTC	View event →
M 4.5	102 km NE of Santa Monica, Philippines	35.0 km	2012-08-31 23:36:43 UTC	View event →
M 5.6	84 km ENE of Santa Monica, Philippines	40.3 km	2012-08-31 23:37:58 UTC	View event →
M 4.8	91 km ENE of Santa Monica, Philippines	38.8 km	2012-08-31 23:40:08 UTC	View event →
M 5.3	50 km ENE of Santa Monica, Philippines	35.0 km	2012-09-01 00:25:02 UTC	View event →
M 4.6	99 km ENE of Sulangan, Philippines	35.0 km	2012-09-01 00:36:05 UTC	View event →
M 5.4	85 km NE of Santa Monica, Philippines	35.3 km	2012-09-01 01:16:08 UTC	View event →
M 5.4	101 km ENE of Santa Monica, Philippines	29.2 km	2012-09-01 01:20:38 UTC	View event →
M 4.6	85 km ENE of Santa Monica, Philippines	23.8 km	2012-09-01 01:28:47 UTC	View event →
M 4.7	103 km ENE of Santa Monica, Philippines	26.7 km	2012-09-01 01:37:34 UTC	View event →
M 4.5	92 km ENE of Santa Monica, Philippines	35.0 km	2012-09-01 02:20:06 UTC	View event →
M 4.5	103 km NE of Santa Monica, Philippines	29.4 km	2012-09-01 02:20:30 UTC	View event →
M 4.6	107 km ENE of Sulangan, Philippines	35.2 km	2012-09-01 04:38:11 UTC	View event →
M 4.6	112 km NE of Santa Monica, Philippines	20.1 km	2012-09-01 05:50:12 UTC	View event →
M 4.9	102 km NE of Santa Monica, Philippines	33.3 km	2012-09-01 05:52:11 UTC	View event →
M 5.0	95 km ENE of Santa Monica, Philippines	35.0 km	2012-09-01 08:08:11 UTC	View event →
M 5.0	99 km ENE of Santa Monica, Philippines	35.0 km	2012-09-01 08:13:16 UTC	View event →
M 4.7	105 km ENE of Santa Monica, Philippines	35.0 km	2012-09-01 08:18:47 UTC	View event →
M 4.6	76 km ENE of Santa Monica, Philippines	47.6 km	2012-09-01 08:41:41 UTC	View event →
M 4.6	108 km ENE of Santa Monica, Philippines	35.0 km	2012-09-01 09:01:03 UTC	View event →
M 4.5	Philippine Islands region	19.5 km	2012-09-01 09:52:02 UTC	View event →
M 4.5	119 km ENE of Santa Monica, Philippines	35.0 km	2012-09-01 10:09:49 UTC	View event →
M 4.6	99 km E of Sulangan, Philippines	35.0 km	2012-09-01 11:05:35 UTC	View event →
M 4.5	119 km ENE of Sulangan, Philippines	35.0 km	2012-09-01 11:24:17 UTC	View event →
M 4.6	107 km ENE of Santa Monica, Philippines	35.0 km	2012-09-01 12:19:17 UTC	View event →
M 4.8	105 km ENE of Santa Monica, Philippines	35.0 km	2012-09-01 12:27:19 UTC	View event →
M 4.5	120 km ENE of Santa Monica, Philippines	35.0 km	2012-09-01 12:37:32 UTC	View event →
M 4.5	101 km NE of Santa Monica, Philippines	35.0 km	2012-09-01 14:54:05 UTC	View event →
M 4.8	Philippine Islands region	35.0 km	2012-09-01 14:55:29 UTC	View event →
M 4.9	106 km ENE of Santa Monica, Philippines	22.7 km	2012-09-01 17:26:40 UTC	View event →
M 4.7	84 km NE of Santa Monica, Philippines	35.0 km	2012-09-01 17:57:47 UTC	View event →
M 4.7	79 km ESE of Sulangan, Philippines	35.0 km	2012-09-01 18:06:45 UTC	View event →
M 4.5	88 km ESE of Sulangan, Philippines	35.0 km	2012-09-02 00:41:23 UTC	View event →
M 4.5	99 km ENE of Sulangan, Philippines	35.0 km	2012-09-02 05:20:41 UTC	View event →
M 4.7	60 km ENE of Santa Monica, Philippines	35.0 km	2012-09-02 07:32:13 UTC	View event →
M 4.5	113 km E of Sulangan, Philippines	30.3 km	2012-09-02 08:01:49 UTC	View event →
M 4.6	107 km E of Sulangan, Philippines	14.4 km	2012-09-02 08:11:23 UTC	View event →
M 5.4	99 km ENE of Sulangan, Philippines	35.0 km	2012-09-02 14:42:15 UTC	View event →
M 4.7	125 km ENE of Santa Monica, Philippines	35.0 km	2012-09-02 15:18:29 UTC	View event →
M 4.6	102 km ENE of Sulangan, Philippines	39.9 km	2012-09-02 16:18:19 UTC	View event →
M 4.9	95 km E of Sulangan, Philippines	35.0 km	2012-09-02 17:53:32 UTC	View event →
M 4.9	111 km ENE of Santa Monica, Philippines	35.0 km	2012-09-02 18:30:13 UTC	View event →
M 4.7	97 km NE of Santa Monica, Philippines	35.0 km	2012-09-02 18:54:29 UTC	View event →
M 4.5	102 km E of Sulangan, Philippines	37.8 km	2012-09-02 21:31:29 UTC	View event →
M 4.5	102 km E of Sulangan, Philippines	35.0 km	2012-09-02 22:37:16 UTC	View event →
M 4.7	87 km E of Sulangan, Philippines	35.0 km	2012-09-02 22:55:18 UTC	View event →
M 5.1	52 km NE of Santa Monica, Philippines	35.0 km	2012-09-03 02:14:43 UTC	View event →
M 4.9	56 km NE of Santa Monica, Philippines	35.0 km	2012-09-03 03:11:31 UTC	View event →
M 4.7	88 km ENE of Sulangan, Philippines	35.0 km	2012-09-03 04:20:25 UTC	View event →
M 4.6	44 km E of Sulangan, Philippines	35.0 km	2012-09-03 06:19:16 UTC	View event →
M 4.7	91 km ENE of Santa Monica, Philippines	20.8 km	2012-09-03 09:21:37 UTC	View event →
M 4.6	44 km ENE of Pilar, Philippines	29.3 km	2012-09-03 10:02:58 UTC	View event →
M 4.7	94 km E of Sulangan, Philippines	23.4 km	2012-09-03 15:56:57 UTC	View event →
M 4.7	83 km E of Sulangan, Philippines	16.3 km	2012-09-03 16:00:59 UTC	View event →
M 4.7	101 km NE of Santa Monica, Philippines	32.6 km	2012-09-03 17:52:59 UTC	View event →
M 4.6	63 km NNE of Santa Monica, Philippines	35.0 km	2012-09-03 18:00:53 UTC	View event →
M 4.5	70 km ESE of Sulangan, Philippines	35.0 km	2012-09-03 18:02:28 UTC	View event →
M 4.5	129 km NE of Santa Monica, Philippines	35.0 km	2012-09-03 19:26:17 UTC	View event →
M 5.7	5 km W of NIA Valencia, Philippines	10.0 km	2012-09-03 19:44:22 UTC	View event →
M 4.8	11 km S of Adtugan, Philippines	18.4 km	2012-09-03 19:52:28 UTC	View event →
M 4.7	65 km NE of Santa Monica, Philippines	35.0 km	2012-09-03 22:18:39 UTC	View event →
M 5.3	103 km ENE of Santa Monica, Philippines	35.0 km	2012-09-04 00:50:53 UTC	View event →
M 4.9	93 km ENE of Santa Monica, Philippines	35.0 km	2012-09-04 00:51:44 UTC	View event →
M 4.8	103 km ENE of Santa Monica, Philippines	27.2 km	2012-09-04 00:53:52 UTC	View event →
M 4.6	177 km ENE of Santa Monica, Philippines	10.0 km	2012-09-04 04:55:27 UTC	View event →
M 4.5	94 km ENE of Santa Monica, Philippines	28.9 km	2012-09-04 05:48:15 UTC	View event →
M 5.3	108 km NE of Santa Monica, Philippines	32.7 km	2012-09-04 06:43:01 UTC	View event →
M 5.0	107 km NE of Santa Monica, Philippines	29.6 km	2012-09-04 06:45:10 UTC	View event →
M 5.3	109 km NE of Santa Monica, Philippines	32.3 km	2012-09-04 06:54:59 UTC	View event →
M 5.2	92 km NE of Santa Monica, Philippines	36.6 km	2012-09-04 06:58:02 UTC	View event →
M 4.8	101 km ENE of Santa Monica, Philippines	35.0 km	2012-09-04 07:05:33 UTC	View event →
M 4.6	115 km ENE of Santa Monica, Philippines	35.0 km	2012-09-04 09:40:00 UTC	View event →
M 5.4	93 km ENE of Santa Monica, Philippines	35.0 km	2012-09-04 09:58:10 UTC	View event →
M 5.3	107 km ENE of Santa Monica, Philippines	22.0 km	2012-09-04 14:43:17 UTC	View event →
M 4.6	109 km ENE of Santa Monica, Philippines	35.0 km	2012-09-04 14:50:29 UTC	View event →
M 4.5	Philippine Islands region	35.0 km	2012-09-04 15:08:57 UTC	View event →
M 5.2	98 km NE of Santa Monica, Philippines	35.0 km	2012-09-04 15:11:13 UTC	View event →
M 4.7	103 km NE of Santa Monica, Philippines	35.0 km	2012-09-04 17:14:21 UTC	View event →
M 4.9	27 km ESE of Dulag, Philippines	35.0 km	2012-09-04 19:09:26 UTC	View event →
M 4.9	70 km ENE of Sulangan, Philippines	35.0 km	2012-09-04 19:32:34 UTC	View event →
M 4.5	96 km NE of Santa Monica, Philippines	35.0 km	2012-09-04 23:12:39 UTC	View event →
M 5.3	121 km NE of Sulangan, Philippines	35.2 km	2012-09-05 00:35:30 UTC	View event →
M 4.5	134 km E of Sulangan, Philippines	35.0 km	2012-09-05 17:23:56 UTC	View event →
M 4.5	88 km NE of Santa Monica, Philippines	35.0 km	2012-09-05 20:09:41 UTC	View event →
M 4.8	109 km ENE of Santa Monica, Philippines	35.0 km	2012-09-06 04:00:37 UTC	View event →
M 4.6	64 km ESE of Santiago, Philippines	35.0 km	2012-09-06 05:12:47 UTC	View event →
M 4.6	95 km ENE of Santa Monica, Philippines	27.2 km	2012-09-06 09:13:26 UTC	View event →
M 5.0	85 km E of Sulangan, Philippines	16.1 km	2012-09-06 19:04:25 UTC	View event →
M 4.6	76 km ENE of Santa Monica, Philippines	35.0 km	2012-09-06 21:47:35 UTC	View event →
M 4.9	94 km ESE of Sulangan, Philippines	35.0 km	2012-09-07 06:21:13 UTC	View event →
M 4.6	65 km NE of Santa Monica, Philippines	35.0 km	2012-09-07 08:30:23 UTC	View event →
M 4.9	43 km ESE of Santiago, Philippines	60.1 km	2012-09-07 10:43:12 UTC	View event →
M 4.7	112 km E of Sulangan, Philippines	35.0 km	2012-09-07 13:57:01 UTC	View event →
M 5.0	95 km NE of Santa Monica, Philippines	37.8 km	2012-09-07 17:44:38 UTC	View event →
M 4.9	111 km ENE of Santa Monica, Philippines	43.9 km	2012-09-07 17:45:32 UTC	View event →
M 4.8	107 km NE of Santa Monica, Philippines	35.0 km	2012-09-07 17:49:46 UTC	View event →
M 4.9	107 km E of Sulangan, Philippines	27.2 km	2012-09-07 21:11:49 UTC	View event →
M 4.5	30 km ESE of Manay, Philippines	89.3 km	2012-09-08 01:05:33 UTC	View event →
M 4.6	117 km NE of Santa Monica, Philippines	35.0 km	2012-09-08 07:24:24 UTC	View event →
M 4.8	102 km ESE of Sulangan, Philippines	49.9 km	2012-09-08 07:53:06 UTC	View event →
M 4.6	77 km E of Sulangan, Philippines	42.4 km	2012-09-08 08:23:40 UTC	View event →
M 4.5	115 km ESE of Sulangan, Philippines	35.0 km	2012-09-08 12:19:43 UTC	View event →
M 4.7	76 km ENE of Santa Monica, Philippines	35.0 km	2012-09-08 12:44:08 UTC	View event →
M 4.7	99 km ENE of Sulangan, Philippines	43.0 km	2012-09-08 18:40:49 UTC	View event →
M 4.5	77 km ENE of Sulangan, Philippines	35.0 km	2012-09-08 20:16:43 UTC	View event →
M 4.6	133 km E of Sulangan, Philippines	35.0 km	2012-09-09 10:02:05 UTC	View event →
M 4.5	44 km NE of Cortes, Philippines	100.0 km	2012-09-10 02:47:22 UTC	View event →
M 4.6	103 km NE of Santa Monica, Philippines	35.0 km	2012-09-10 09:27:28 UTC	View event →
M 4.6	78 km NE of Santa Monica, Philippines	35.0 km	2012-09-10 22:27:55 UTC	View event →
M 4.6	91 km ENE of Sulangan, Philippines	33.3 km	2012-09-11 05:35:48 UTC	View event →
M 5.2	104 km ESE of Sulangan, Philippines	15.8 km	2012-09-11 18:10:06 UTC	View event →
M 4.7	107 km E of Sulangan, Philippines	35.0 km	2012-09-12 13:36:19 UTC	View event →
M 4.9	85 km ENE of Santa Monica, Philippines	13.4 km	2012-09-12 14:23:05 UTC	View event →
M 4.5	89 km NE of Santa Monica, Philippines	28.9 km	2012-09-12 15:08:24 UTC	View event →
M 4.6	49 km ENE of Santa Monica, Philippines	26.7 km	2012-09-13 03:20:30 UTC	View event →
M 4.5	38 km SE of Sulangan, Philippines	35.0 km	2012-09-13 05:41:16 UTC	View event →
M 5.4	100 km ENE of Pilar, Philippines	22.8 km	2012-09-13 05:54:48 UTC	View event →
M 4.6	95 km NE of Santa Monica, Philippines	47.0 km	2012-09-13 09:02:46 UTC	View event →
M 4.6	99 km ENE of Santa Monica, Philippines	35.0 km	2012-09-13 17:12:47 UTC	View event →
M 4.5	28 km ENE of Santa Monica, Philippines	35.0 km	2012-09-14 08:55:38 UTC	View 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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