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Sequence · 2002-11-03

M 7.9 · Observed seismic cluster · 2002 Denali Fault, Alaska Earthquake

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 cluster55
M6+1
Analysis radius484 km
Observation window14 days
Largest secondary eventM 5.6
Quake Pulse · Major sequence

What the sequence shows

After the M 7.9 reference event, Quake Pulse counts 41 M4+ event(s) in the first 24 hours and 51 in the first 7 days. Fourteen-day M4.5+ activity is about 93.9× the average equivalent derived from the previous year. The largest secondary event is M 2.3 below the reference event.

94/100Sequence score
Events in the previous 24 h0
In the first hour20
In the first 24 hours41
In the first 7 days51
Within 14 days54
Peak one-hour count20

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 d15Average 14-day equivalent0.6Activity / baseline ratio93.9×

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 5.6Magnitude gapM 2.3Observed duration12.0 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
2002 Denali Fault, Alaska Earthquake · 484 kmInteractive 3D view of earthquakes within 484 km of 2002 Denali Fault, Alaska Earthquake.2002 Denali Fault, Alaska EarthquakeM 4.7 · 65 km E of Cantwell, Alaska · 11.1 kmM 5.0 · 57 km E of Cantwell, Alaska · 18.1 kmM 4.6 · 74 km E of Cantwell, Alaska · 1.1 kmM 5.4 · 45 km WNW of Mentasta Lake, Alaska · 151.1 kmM 5.6 · 23 km NNW of Paxson, Alaska · 90.1 kmM 5.6 · 23 km N of Paxson, Alaska · 91.4 kmM 5.4 · 19 km NNE of Paxson, Alaska · 100.5 kmM 4.8 · 37 km S of Dry Creek, Alaska · 135.0 kmM 4.8 · 19 km N of Paxson, Alaska · 93.0 kmM 4.9 · 72 km E of Cantwell, Alaska · 4.2 kmM 5.2 · 32 km SW of Dry Creek, Alaska · 120.3 kmM 4.9 · 56 km ENE of Cantwell, Alaska · 19.3 kmM 4.9 · 14 km N of Paxson, Alaska · 99.6 kmM 4.9 · 27 km SW of Dry Creek, Alaska · 118.0 kmM 4.5 · 25 km N of Paxson, Alaska · 95.3 kmM 4.5 · 26 km NNE of Paxson, Alaska · 103.8 kmM 4.9 · 13 km SSE of Mentasta Lake, Alaska · 204.6 kmM 4.7 · 79 km ESE of McKinley Park, Alaska · 9.8 kmM 4.7 · 25 km NE of Paxson, Alaska · 114.6 kmM 5.1 · 3 km ENE of Mentasta Lake, Alaska · 198.5 kmM 4.5 · 21 km N of Paxson, Alaska · 92.5 kmM 4.7 · 78 km ESE of McKinley Park, Alaska · 8.7 kmM 4.6 · 26 km WNW of Mentasta Lake, Alaska · 170.5 kmM 4.5 · 75 km ESE of McKinley Park, Alaska · 8.4 kmM 4.9 · 43 km ENE of Paxson, Alaska · 135.9 kmM 4.5 · Central Alaska · 10.6 kmM 4.6 · 30 km NNW of Nabesna, Alaska · 237.5 kmM 4.8 · 21 km ENE of Paxson, Alaska · 115.3 kmM 5.4 · 36 km NE of Paxson, Alaska · 119.2 kmM 5.2 · 41 km ENE of Paxson, Alaska · 137.4 kmM 4.7 · 76 km ESE of McKinley Park, Alaska · 1.8 kmM 5.1 · 78 km ESE of McKinley Park, Alaska · 3.1 kmM 5.1 · 44 km ENE of Paxson, Alaska · 138.8 kmM 5.0 · 16 km WNW of Mentasta Lake, Alaska · 179.5 kmM 4.5 · 17 km NE of Nabesna, Alaska · 260.8 kmM 4.5 · 46 km ENE of Paxson, Alaska · 141.2 kmM 4.7 · 48 km E of Paxson, Alaska · 145.5 kmM 4.5 · 49 km WNW of Mentasta Lake, Alaska · 147.2 kmM 4.5 · 33 km NNW of Nabesna, Alaska · 235.2 kmM 4.6 · 17 km NNE of Nabesna, Alaska · 258.4 kmM 4.7 · 41 km WNW of Mentasta Lake, Alaska · 154.6 km
2002 Denali Fault, Alaska Earthquake484 km41 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

3,067 Felt reports · Shallow

80/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 7.92002 Denali Fault, Alaska Earthquake4.2 km2002-11-03 22:12:41 UTCView event →
M 4.765 km E of Cantwell, Alaska22.4 km2002-11-03 22:18:10 UTCView event →
M 5.057 km E of Cantwell, Alaska0.0 km2002-11-03 22:18:45 UTCView event →
M 4.674 km E of Cantwell, Alaska7.0 km2002-11-03 22:24:43 UTCView event →
M 5.445 km WNW of Mentasta Lake, Alaska0.4 km2002-11-03 22:30:49 UTCView event →
M 5.623 km NNW of Paxson, Alaska20.4 km2002-11-03 22:31:57 UTCView event →
M 5.623 km N of Paxson, Alaska0.9 km2002-11-03 22:32:17 UTCView event →
M 5.419 km NNE of Paxson, Alaska1.0 km2002-11-03 22:33:34 UTCView event →
M 4.837 km S of Dry Creek, Alaska5.0 km2002-11-03 22:37:40 UTCView event →
M 4.819 km N of Paxson, Alaska1.0 km2002-11-03 22:37:56 UTCView event →
M 4.972 km E of Cantwell, Alaska11.0 km2002-11-03 22:40:11 UTCView event →
M 5.232 km SW of Dry Creek, Alaska5.2 km2002-11-03 22:50:44 UTCView event →
M 4.956 km ENE of Cantwell, Alaska5.0 km2002-11-03 22:52:06 UTCView event →
M 4.914 km N of Paxson, Alaska0.6 km2002-11-03 22:54:21 UTCView event →
M 4.927 km SW of Dry Creek, Alaska5.0 km2002-11-03 22:54:44 UTCView event →
M 4.525 km N of Paxson, Alaska5.2 km2002-11-03 22:56:01 UTCView event →
M 4.526 km NNE of Paxson, Alaska5.0 km2002-11-03 22:56:50 UTCView event →
M 4.913 km SSE of Mentasta Lake, Alaska2.5 km2002-11-03 23:03:09 UTCView event →
M 4.779 km ESE of McKinley Park, Alaska2.7 km2002-11-03 23:05:29 UTCView event →
M 4.725 km NE of Paxson, Alaska0.9 km2002-11-03 23:10:58 UTCView event →
M 5.13 km ENE of Mentasta Lake, Alaska5.0 km2002-11-03 23:11:49 UTCView event →
M 4.521 km N of Paxson, Alaska0.8 km2002-11-03 23:17:34 UTCView event →
M 4.778 km ESE of McKinley Park, Alaska5.6 km2002-11-03 23:19:57 UTCView event →
M 4.626 km WNW of Mentasta Lake, Alaska0.1 km2002-11-03 23:30:20 UTCView event →
M 4.575 km ESE of McKinley Park, Alaska6.6 km2002-11-03 23:36:20 UTCView event →
M 4.943 km ENE of Paxson, Alaska1.9 km2002-11-03 23:48:49 UTCView event →
M 4.5Central Alaska-0.1 km2002-11-04 00:01:55 UTCView event →
M 4.630 km NNW of Nabesna, Alaska0.7 km2002-11-04 00:23:08 UTCView event →
M 4.821 km ENE of Paxson, Alaska6.1 km2002-11-04 00:25:01 UTCView event →
M 5.436 km NE of Paxson, Alaska1.3 km2002-11-04 00:50:43 UTCView event →
M 5.241 km ENE of Paxson, Alaska1.0 km2002-11-04 01:38:58 UTCView event →
M 4.776 km ESE of McKinley Park, Alaska5.3 km2002-11-04 01:53:38 UTCView event →
M 5.178 km ESE of McKinley Park, Alaska4.9 km2002-11-04 02:08:05 UTCView event →
M 5.144 km ENE of Paxson, Alaska5.0 km2002-11-04 02:08:26 UTCView event →
M 5.016 km WNW of Mentasta Lake, Alaska-0.2 km2002-11-04 04:32:35 UTCView event →
M 4.517 km NE of Nabesna, Alaska1.0 km2002-11-04 04:47:24 UTCView event →
M 4.546 km ENE of Paxson, Alaska-0.4 km2002-11-04 06:50:18 UTCView event →
M 4.748 km E of Paxson, Alaska0.6 km2002-11-04 08:44:58 UTCView event →
M 4.549 km WNW of Mentasta Lake, Alaska3.6 km2002-11-04 09:23:14 UTCView event →
M 4.533 km NNW of Nabesna, Alaska1.0 km2002-11-04 09:34:27 UTCView event →
M 4.617 km NNE of Nabesna, Alaska1.0 km2002-11-04 10:15:15 UTCView event →
M 4.741 km WNW of Mentasta Lake, Alaska5.5 km2002-11-04 21:52:49 UTCView event →
M 4.815 km SE of Mentasta Lake, Alaska8.1 km2002-11-05 01:33:30 UTCView event →
M 4.9Central Alaska5.0 km2002-11-05 07:50:48 UTCView event →
M 4.8Central Alaska1.0 km2002-11-05 14:34:30 UTCView event →
M 5.028 km NE of Paxson, Alaska10.8 km2002-11-05 17:22:43 UTCView event →
M 4.618 km N of Mentasta Lake, Alaska1.0 km2002-11-05 23:14:02 UTCView event →
M 5.060 km SW of Alcan Border, Alaska1.1 km2002-11-08 04:04:17 UTCView event →
M 5.136 km ENE of Cantwell, Alaska6.4 km2002-11-08 17:34:52 UTCView event →
M 5.021 km N of Nabesna, Alaska1.0 km2002-11-08 20:28:42 UTCView event →
M 5.117 km ESE of Mentasta Lake, Alaska13.4 km2002-11-08 20:29:02 UTCView event →
M 4.754 km ENE of Cantwell, Alaska11.1 km2002-11-10 21:49:43 UTCView event →
M 4.638 km NW of Mentasta Lake, Alaska3.4 km2002-11-13 13:40:39 UTCView event →
M 5.145 km NW of Paxson, Alaska4.8 km2002-11-14 14:37:23 UTCView event →
M 4.656 km E of Cantwell, Alaska2.4 km2002-11-15 22:05:40 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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