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Sequence · 2025-05-02

M 6.4 · Observed seismic cluster · 289 km SSE of Ushuaia, Argentina

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 cluster39
M6+1
Analysis radius244 km
Observation window14 days
Largest secondary eventM 5.3
Quake Pulse · Major sequence

What the sequence shows

After the M 6.4 reference event, Quake Pulse counts 22 M4+ event(s) in the first 24 hours and 38 in the first 7 days. Fourteen-day M4.5+ activity is about 76.0× the average equivalent derived from the previous year. The largest secondary event is M 1.1 below the reference event.

75/100Sequence score
Events in the previous 24 h31
In the first hour3
In the first 24 hours22
In the first 7 days38
Within 14 days38
Peak one-hour count4

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 d1Average 14-day equivalent0.0Activity / baseline ratio76.0×

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 5.3Magnitude gapM 1.1Observed duration5.6 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
289 km SSE of Ushuaia, Argentina · 244 kmInteractive 3D view of earthquakes within 244 km of 289 km SSE of Ushuaia, Argentina.289 km SSE of Ushuaia, ArgentinaM 5.0 · Drake Passage · 12.8 kmM 5.1 · 296 km SSE of Ushuaia, Argentina · 12.0 kmM 4.5 · 296 km SSE of Ushuaia, Argentina · 7.7 kmM 4.6 · 263 km SSE of Ushuaia, Argentina · 28.9 kmM 5.1 · 295 km SSE of Ushuaia, Argentina · 15.6 kmM 4.8 · 275 km SSE of Ushuaia, Argentina · 14.0 kmM 5.0 · 299 km SSE of Ushuaia, Argentina · 12.2 kmM 5.3 · 266 km SSE of Ushuaia, Argentina · 24.3 kmM 4.6 · 280 km S of Ushuaia, Argentina · 42.2 kmM 4.5 · 272 km SSE of Ushuaia, Argentina · 19.3 kmM 4.5 · 215 km S of Ushuaia, Argentina · 108.4 kmM 4.5 · 278 km SSE of Ushuaia, Argentina · 21.0 kmM 4.5 · 275 km SSE of Ushuaia, Argentina · 16.1 kmM 4.8 · 284 km SSE of Ushuaia, Argentina · 13.9 kmM 4.9 · 267 km SSE of Ushuaia, Argentina · 21.7 kmM 5.0 · 254 km S of Ushuaia, Argentina · 49.3 kmM 4.5 · 238 km SSE of Ushuaia, Argentina · 55.0 kmM 4.9 · 272 km SSE of Ushuaia, Argentina · 17.8 kmM 4.7 · 233 km S of Ushuaia, Argentina · 76.9 kmM 4.5 · 260 km SSE of Ushuaia, Argentina · 31.4 kmM 4.5 · 261 km S of Ushuaia, Argentina · 40.9 kmM 4.6 · 262 km SSE of Ushuaia, Argentina · 35.2 km
289 km SSE of Ushuaia, Argentina244 km22 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

6 Felt reports · PAGER GREEN · Tsunami indicator · Shallow

56/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.4289 km SSE of Ushuaia, Argentina8.0 km2025-05-02 17:59:07 UTCView event →
M 5.0Drake Passage10.0 km2025-05-02 18:07:37 UTCView event →
M 5.1296 km SSE of Ushuaia, Argentina10.0 km2025-05-02 18:20:31 UTCView event →
M 4.5296 km SSE of Ushuaia, Argentina10.0 km2025-05-02 18:25:32 UTCView event →
M 4.6263 km SSE of Ushuaia, Argentina10.0 km2025-05-02 19:17:42 UTCView event →
M 5.1295 km SSE of Ushuaia, Argentina10.0 km2025-05-02 19:33:49 UTCView event →
M 4.8275 km SSE of Ushuaia, Argentina10.0 km2025-05-02 19:42:29 UTCView event →
M 5.0299 km SSE of Ushuaia, Argentina10.0 km2025-05-02 19:57:58 UTCView event →
M 5.3266 km SSE of Ushuaia, Argentina10.0 km2025-05-02 20:14:15 UTCView event →
M 4.6280 km S of Ushuaia, Argentina10.0 km2025-05-02 21:09:41 UTCView event →
M 4.5272 km SSE of Ushuaia, Argentina10.0 km2025-05-03 01:13:25 UTCView event →
M 4.5215 km S of Ushuaia, Argentina10.0 km2025-05-03 02:51:47 UTCView event →
M 4.5278 km SSE of Ushuaia, Argentina10.0 km2025-05-03 04:57:51 UTCView event →
M 4.5275 km SSE of Ushuaia, Argentina10.0 km2025-05-03 05:17:53 UTCView event →
M 4.8284 km SSE of Ushuaia, Argentina10.0 km2025-05-03 07:18:12 UTCView event →
M 4.9267 km SSE of Ushuaia, Argentina10.0 km2025-05-03 07:48:04 UTCView event →
M 5.0254 km S of Ushuaia, Argentina10.0 km2025-05-03 10:06:32 UTCView event →
M 4.5238 km SSE of Ushuaia, Argentina10.0 km2025-05-03 10:10:58 UTCView event →
M 4.9272 km SSE of Ushuaia, Argentina10.0 km2025-05-03 10:50:43 UTCView event →
M 4.7233 km S of Ushuaia, Argentina10.0 km2025-05-03 11:54:40 UTCView event →
M 4.5260 km SSE of Ushuaia, Argentina10.0 km2025-05-03 14:07:50 UTCView event →
M 4.5261 km S of Ushuaia, Argentina10.0 km2025-05-03 14:41:31 UTCView event →
M 4.6262 km SSE of Ushuaia, Argentina10.0 km2025-05-03 17:23:00 UTCView event →
M 4.8286 km SSE of Ushuaia, Argentina10.0 km2025-05-04 01:14:01 UTCView event →
M 4.7298 km S of Ushuaia, Argentina10.0 km2025-05-04 03:10:54 UTCView event →
M 5.3Drake Passage10.0 km2025-05-04 04:38:06 UTCView event →
M 5.0266 km SSE of Ushuaia, Argentina10.0 km2025-05-04 04:53:27 UTCView event →
M 4.7267 km SSE of Ushuaia, Argentina10.0 km2025-05-04 11:12:34 UTCView event →
M 4.7267 km S of Ushuaia, Argentina10.0 km2025-05-04 11:26:03 UTCView event →
M 4.5281 km SSE of Ushuaia, Argentina10.0 km2025-05-04 11:26:56 UTCView event →
M 4.7266 km SSE of Ushuaia, Argentina10.0 km2025-05-04 11:59:19 UTCView event →
M 4.5273 km SSE of Ushuaia, Argentina10.0 km2025-05-04 15:25:25 UTCView event →
M 4.7263 km S of Ushuaia, Argentina10.0 km2025-05-05 04:55:06 UTCView event →
M 4.5259 km S of Ushuaia, Argentina10.0 km2025-05-05 08:50:00 UTCView event →
M 4.5275 km S of Ushuaia, Argentina10.0 km2025-05-05 22:43:12 UTCView event →
M 4.5273 km S of Ushuaia, Argentina10.0 km2025-05-07 10:06:54 UTCView event →
M 4.5289 km S of Ushuaia, Argentina10.0 km2025-05-07 18:47:16 UTCView event →
M 4.8271 km SSE of Ushuaia, Argentina10.0 km2025-05-08 00:36:15 UTCView event →
M 4.7282 km SSE of Ushuaia, Argentina10.0 km2025-05-08 07:36:12 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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