Quake Pulse logoQuake Pulse
Sequence · 2018-08-19

M 8.2 · Observed seismic cluster · 2018 Fiji 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 cluster126
M6+3
Analysis radius532 km
Observation window14 days
Largest secondary eventM 6.4
Quake Pulse · Major sequence

What the sequence shows

After the M 8.2 reference event, Quake Pulse counts 80 M4+ event(s) in the first 24 hours and 109 in the first 7 days. Fourteen-day M4.5+ activity is about 8.6× the average equivalent derived from the previous year. The largest secondary event is M 1.8 below the reference event.

97/100Sequence score
Events in the previous 24 h1
In the first hour23
In the first 24 hours80
In the first 7 days109
Within 14 days129
Peak one-hour count23

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 d391Average 14-day equivalent15.0Activity / baseline ratio8.6×

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 6.4Magnitude gapM 1.8Observed duration13.7 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
2018 Fiji Earthquake · 532 kmInteractive 3D view of earthquakes within 532 km of 2018 Fiji Earthquake.2018 Fiji EarthquakeM 6.3 · Fiji region · 65.5 kmM 5.6 · 268 km E of Levuka, Fiji · 2.8 kmM 5.7 · 263 km E of Levuka, Fiji · 19.3 kmM 5.2 · Fiji region · 45.7 kmM 5.2 · 283 km E of Levuka, Fiji · 22.1 kmM 5.7 · 286 km E of Levuka, Fiji · 28.1 kmM 5.3 · Fiji region · 57.9 kmM 4.8 · 281 km E of Levuka, Fiji · 19.4 kmM 4.8 · 272 km E of Levuka, Fiji · 12.1 kmM 4.8 · 289 km E of Levuka, Fiji · 33.9 kmM 4.7 · Fiji region · 55.4 kmM 5.3 · 253 km E of Levuka, Fiji · 14.1 kmM 5.6 · 273 km E of Levuka, Fiji · 14.1 kmM 5.1 · 290 km E of Levuka, Fiji · 30.3 kmM 5.3 · 276 km E of Levuka, Fiji · 31.5 kmM 4.8 · 270 km E of Levuka, Fiji · 9.1 kmM 4.7 · 291 km E of Levuka, Fiji · 25.2 kmM 4.8 · 296 km E of Levuka, Fiji · 36.4 kmM 4.6 · 222 km E of Levuka, Fiji · 46.7 kmM 4.8 · 286 km E of Levuka, Fiji · 19.8 kmM 4.6 · 100 km ESE of Labasa, Fiji · 230.8 kmM 4.9 · 289 km E of Levuka, Fiji · 21.6 kmM 4.5 · Fiji region · 53.2 kmM 4.6 · 172 km E of Levuka, Fiji · 99.1 kmM 4.6 · 297 km E of Levuka, Fiji · 31.5 kmM 4.8 · 234 km ENE of Levuka, Fiji · 77.9 kmM 4.9 · 289 km E of Levuka, Fiji · 25.2 kmM 4.6 · 292 km E of Levuka, Fiji · 33.7 kmM 4.5 · 284 km E of Levuka, Fiji · 26.3 kmM 4.5 · 246 km ENE of Levuka, Fiji · 93.1 kmM 4.5 · 274 km E of Levuka, Fiji · 11.2 kmM 4.7 · 86 km ESE of Labasa, Fiji · 245.2 kmM 5.7 · 247 km E of Levuka, Fiji · 27.9 kmM 5.6 · 281 km E of Levuka, Fiji · 14.6 kmM 4.8 · 271 km E of Levuka, Fiji · 20.0 kmM 5.0 · 296 km E of Levuka, Fiji · 29.2 kmM 4.5 · 291 km E of Levuka, Fiji · 45.1 kmM 4.5 · 284 km E of Levuka, Fiji · 17.1 kmM 4.5 · 285 km E of Levuka, Fiji · 18.5 kmM 4.5 · 232 km E of Levuka, Fiji · 59.2 kmM 4.5 · 290 km E of Levuka, Fiji · 22.7 kmM 4.9 · 284 km E of Levuka, Fiji · 17.2 kmM 5.0 · 219 km E of Levuka, Fiji · 49.4 kmM 4.5 · 270 km E of Levuka, Fiji · 3.2 kmM 4.6 · 287 km E of Levuka, Fiji · 25.7 kmM 4.6 · 255 km E of Levuka, Fiji · 24.1 kmM 4.5 · 275 km E of Levuka, Fiji · 23.3 kmM 4.7 · 296 km E of Levuka, Fiji · 35.3 kmM 6.4 · 284 km ESE of Labasa, Fiji · 126.8 kmM 4.5 · 298 km E of Levuka, Fiji · 32.7 kmM 4.6 · Fiji region · 40.4 kmM 4.7 · 105 km ENE of Levuka, Fiji · 167.2 kmM 4.6 · 112 km ENE of Levuka, Fiji · 164.3 kmM 4.8 · 259 km E of Levuka, Fiji · 9.7 kmM 4.9 · 253 km E of Levuka, Fiji · 16.3 kmM 4.6 · 283 km E of Levuka, Fiji · 15.9 kmM 5.2 · 255 km E of Levuka, Fiji · 14.1 kmM 4.9 · 283 km E of Levuka, Fiji · 45.7 kmM 4.9 · 256 km E of Levuka, Fiji · 11.6 kmM 4.5 · 240 km E of Levuka, Fiji · 45.4 kmM 4.5 · 294 km E of Levuka, Fiji · 27.0 kmM 4.6 · 289 km E of Levuka, Fiji · 21.7 kmM 4.6 · 294 km E of Levuka, Fiji · 31.3 kmM 5.2 · 288 km E of Levuka, Fiji · 22.5 kmM 4.5 · 284 km E of Levuka, Fiji · 17.7 kmM 4.9 · Fiji region · 36.0 kmM 5.0 · Fiji region · 85.1 kmM 4.9 · 261 km E of Levuka, Fiji · 12.3 kmM 4.8 · 277 km E of Levuka, Fiji · 10.0 kmM 4.6 · 278 km E of Levuka, Fiji · 11.4 kmM 4.5 · 287 km E of Levuka, Fiji · 30.4 kmM 4.8 · 286 km E of Levuka, Fiji · 26.4 kmM 4.6 · 269 km ENE of Levuka, Fiji · 64.8 kmM 4.7 · 294 km ESE of Labasa, Fiji · 127.9 kmM 4.5 · 207 km W of Levuka, Fiji · 61.7 kmM 4.5 · 265 km E of Levuka, Fiji · 13.0 kmM 4.7 · 286 km E of Levuka, Fiji · 19.1 kmM 4.6 · 299 km E of Levuka, Fiji · 40.7 kmM 4.5 · 243 km ENE of Levuka, Fiji · 93.1 kmM 4.5 · 244 km ENE of Levuka, Fiji · 95.2 km
2018 Fiji Earthquake532 km80 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

36 Felt reports · PAGER GREEN · Tsunami indicator · Very deep

71/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 8.22018 Fiji Earthquake600.0 km2018-08-19 00:19:40 UTCView event →
M 6.3Fiji region575.8 km2018-08-19 00:23:06 UTCView event →
M 5.6268 km E of Levuka, Fiji580.2 km2018-08-19 00:30:41 UTCView event →
M 5.7263 km E of Levuka, Fiji520.1 km2018-08-19 00:32:59 UTCView event →
M 5.2Fiji region580.4 km2018-08-19 00:38:17 UTCView event →
M 5.2283 km E of Levuka, Fiji584.2 km2018-08-19 00:38:46 UTCView event →
M 5.7286 km E of Levuka, Fiji575.5 km2018-08-19 00:39:07 UTCView event →
M 5.3Fiji region643.8 km2018-08-19 00:39:23 UTCView event →
M 4.8281 km E of Levuka, Fiji546.1 km2018-08-19 00:46:00 UTCView event →
M 4.8272 km E of Levuka, Fiji596.6 km2018-08-19 00:47:34 UTCView event →
M 4.8289 km E of Levuka, Fiji576.7 km2018-08-19 00:48:32 UTCView event →
M 4.7Fiji region467.7 km2018-08-19 00:51:27 UTCView event →
M 5.3253 km E of Levuka, Fiji511.3 km2018-08-19 00:52:32 UTCView event →
M 5.6273 km E of Levuka, Fiji537.6 km2018-08-19 00:55:44 UTCView event →
M 5.1290 km E of Levuka, Fiji558.2 km2018-08-19 00:56:25 UTCView event →
M 5.3276 km E of Levuka, Fiji511.6 km2018-08-19 00:58:31 UTCView event →
M 4.8270 km E of Levuka, Fiji603.1 km2018-08-19 00:59:09 UTCView event →
M 4.7291 km E of Levuka, Fiji578.6 km2018-08-19 01:01:11 UTCView event →
M 4.8296 km E of Levuka, Fiji559.1 km2018-08-19 01:03:41 UTCView event →
M 4.6222 km E of Levuka, Fiji585.1 km2018-08-19 01:07:29 UTCView event →
M 4.8286 km E of Levuka, Fiji561.9 km2018-08-19 01:10:20 UTCView event →
M 4.6100 km ESE of Labasa, Fiji504.7 km2018-08-19 01:12:28 UTCView event →
M 4.9289 km E of Levuka, Fiji569.1 km2018-08-19 01:17:42 UTCView event →
M 4.5Fiji region582.2 km2018-08-19 01:19:23 UTCView event →
M 4.6172 km E of Levuka, Fiji623.3 km2018-08-19 01:21:32 UTCView event →
M 4.6297 km E of Levuka, Fiji625.4 km2018-08-19 01:22:33 UTCView event →
M 4.8234 km ENE of Levuka, Fiji486.4 km2018-08-19 01:34:20 UTCView event →
M 4.9289 km E of Levuka, Fiji567.7 km2018-08-19 01:37:23 UTCView event →
M 4.6292 km E of Levuka, Fiji588.6 km2018-08-19 01:39:53 UTCView event →
M 4.5284 km E of Levuka, Fiji508.8 km2018-08-19 01:45:37 UTCView event →
M 4.5246 km ENE of Levuka, Fiji551.2 km2018-08-19 01:53:27 UTCView event →
M 4.5274 km E of Levuka, Fiji572.1 km2018-08-19 01:57:41 UTCView event →
M 4.786 km ESE of Labasa, Fiji512.0 km2018-08-19 02:01:27 UTCView event →
M 5.7247 km E of Levuka, Fiji618.3 km2018-08-19 02:18:52 UTCView event →
M 5.6281 km E of Levuka, Fiji607.0 km2018-08-19 02:19:18 UTCView event →
M 4.8271 km E of Levuka, Fiji648.7 km2018-08-19 02:23:04 UTCView event →
M 5.0296 km E of Levuka, Fiji586.8 km2018-08-19 02:25:49 UTCView event →
M 4.5291 km E of Levuka, Fiji632.8 km2018-08-19 02:34:04 UTCView event →
M 4.5284 km E of Levuka, Fiji610.2 km2018-08-19 02:36:23 UTCView event →
M 4.5285 km E of Levuka, Fiji550.2 km2018-08-19 02:39:05 UTCView event →
M 4.5232 km E of Levuka, Fiji536.7 km2018-08-19 02:56:43 UTCView event →
M 4.5290 km E of Levuka, Fiji621.3 km2018-08-19 02:59:52 UTCView event →
M 4.9284 km E of Levuka, Fiji578.4 km2018-08-19 03:06:52 UTCView event →
M 5.0219 km E of Levuka, Fiji555.0 km2018-08-19 03:07:27 UTCView event →
M 4.5270 km E of Levuka, Fiji543.0 km2018-08-19 03:13:27 UTCView event →
M 4.6287 km E of Levuka, Fiji587.8 km2018-08-19 03:19:38 UTCView event →
M 4.6255 km E of Levuka, Fiji514.1 km2018-08-19 03:24:21 UTCView event →
M 4.5275 km E of Levuka, Fiji599.0 km2018-08-19 04:15:31 UTCView event →
M 4.7296 km E of Levuka, Fiji596.5 km2018-08-19 04:25:09 UTCView event →
M 6.4284 km ESE of Labasa, Fiji415.6 km2018-08-19 04:28:58 UTCView event →
M 4.5298 km E of Levuka, Fiji598.1 km2018-08-19 04:57:28 UTCView event →
M 4.6Fiji region616.1 km2018-08-19 05:00:15 UTCView event →
M 4.7105 km ENE of Levuka, Fiji625.7 km2018-08-19 05:19:58 UTCView event →
M 4.6112 km ENE of Levuka, Fiji630.0 km2018-08-19 05:20:43 UTCView event →
M 4.8259 km E of Levuka, Fiji523.1 km2018-08-19 05:45:26 UTCView event →
M 4.9253 km E of Levuka, Fiji497.1 km2018-08-19 05:58:36 UTCView event →
M 4.6283 km E of Levuka, Fiji570.5 km2018-08-19 06:19:18 UTCView event →
M 5.2255 km E of Levuka, Fiji517.9 km2018-08-19 06:36:54 UTCView event →
M 4.9283 km E of Levuka, Fiji541.8 km2018-08-19 07:48:51 UTCView event →
M 4.9256 km E of Levuka, Fiji540.8 km2018-08-19 08:17:42 UTCView event →
M 4.5240 km E of Levuka, Fiji574.6 km2018-08-19 09:18:00 UTCView event →
M 4.5294 km E of Levuka, Fiji610.3 km2018-08-19 09:18:32 UTCView event →
M 4.6289 km E of Levuka, Fiji598.1 km2018-08-19 09:43:21 UTCView event →
M 4.6294 km E of Levuka, Fiji607.1 km2018-08-19 10:44:55 UTCView event →
M 5.2288 km E of Levuka, Fiji543.7 km2018-08-19 11:00:30 UTCView event →
M 4.5284 km E of Levuka, Fiji588.1 km2018-08-19 11:23:01 UTCView event →
M 4.9Fiji region560.1 km2018-08-19 15:12:46 UTCView event →
M 5.0Fiji region577.6 km2018-08-19 15:21:55 UTCView event →
M 4.9261 km E of Levuka, Fiji565.4 km2018-08-19 15:23:41 UTCView event →
M 4.8277 km E of Levuka, Fiji545.0 km2018-08-19 15:25:42 UTCView event →
M 4.6278 km E of Levuka, Fiji555.6 km2018-08-19 15:27:34 UTCView event →
M 4.5287 km E of Levuka, Fiji507.0 km2018-08-19 18:11:55 UTCView event →
M 4.8286 km E of Levuka, Fiji548.1 km2018-08-19 18:43:54 UTCView event →
M 4.6269 km ENE of Levuka, Fiji542.6 km2018-08-19 18:49:29 UTCView event →
M 4.7294 km ESE of Labasa, Fiji412.3 km2018-08-19 19:13:19 UTCView event →
M 4.5207 km W of Levuka, Fiji598.8 km2018-08-19 21:28:07 UTCView event →
M 4.5265 km E of Levuka, Fiji548.7 km2018-08-19 21:37:00 UTCView event →
M 4.7286 km E of Levuka, Fiji571.7 km2018-08-19 22:00:27 UTCView event →
M 4.6299 km E of Levuka, Fiji613.0 km2018-08-19 23:47:54 UTCView event →
M 4.5243 km ENE of Levuka, Fiji491.8 km2018-08-20 00:01:37 UTCView event →
M 4.5244 km ENE of Levuka, Fiji473.5 km2018-08-20 00:04:08 UTCView event →
M 4.6290 km E of Levuka, Fiji576.2 km2018-08-20 00:21:28 UTCView event →
M 4.7291 km E of Levuka, Fiji623.3 km2018-08-20 00:42:00 UTCView event →
M 4.6281 km E of Levuka, Fiji574.3 km2018-08-20 00:44:27 UTCView event →
M 4.5263 km E of Levuka, Fiji522.7 km2018-08-20 06:09:40 UTCView event →
M 4.5246 km E of Levuka, Fiji490.0 km2018-08-20 06:43:56 UTCView event →
M 5.5264 km E of Levuka, Fiji535.4 km2018-08-20 08:38:00 UTCView event →
M 5.0272 km E of Levuka, Fiji549.4 km2018-08-20 11:40:05 UTCView event →
M 4.5290 km E of Levuka, Fiji584.8 km2018-08-20 12:10:09 UTCView event →
M 4.5265 km E of Levuka, Fiji534.0 km2018-08-20 16:44:29 UTCView event →
M 4.7259 km E of Levuka, Fiji562.7 km2018-08-20 19:40:24 UTCView event →
M 4.5150 km ESE of Labasa, Fiji544.4 km2018-08-20 20:07:58 UTCView event →
M 4.5288 km E of Levuka, Fiji539.2 km2018-08-20 22:56:14 UTCView event →
M 4.6293 km E of Levuka, Fiji583.0 km2018-08-21 02:36:11 UTCView event →
M 4.6134 km NNE of Hihifo, Tonga10.0 km2018-08-21 04:28:16 UTCView event →
M 5.0274 km E of Levuka, Fiji555.7 km2018-08-21 06:28:57 UTCView event →
M 4.9250 km E of Levuka, Fiji505.7 km2018-08-21 08:56:07 UTCView event →
M 4.5293 km ESE of Labasa, Fiji421.0 km2018-08-21 09:58:18 UTCView event →
M 4.6Fiji region573.4 km2018-08-21 10:56:33 UTCView event →
M 4.5Fiji region519.9 km2018-08-21 18:35:23 UTCView event →
M 4.5148 km WNW of Pangai, Tonga207.6 km2018-08-22 00:08:33 UTCView event →
M 4.5282 km E of Levuka, Fiji575.8 km2018-08-22 02:23:02 UTCView event →
M 4.6102 km NNE of Hihifo, Tonga19.2 km2018-08-22 06:05:21 UTCView event →
M 4.8284 km E of Levuka, Fiji561.1 km2018-08-22 15:28:51 UTCView event →
M 5.1263 km E of Levuka, Fiji543.1 km2018-08-23 03:41:15 UTCView event →
M 4.6299 km E of Levuka, Fiji576.1 km2018-08-23 11:30:26 UTCView event →
M 4.5Fiji region608.7 km2018-08-23 18:41:27 UTCView event →
M 4.7Tonga215.8 km2018-08-24 17:48:58 UTCView event →
M 4.5183 km ESE of Levuka, Fiji557.5 km2018-08-24 17:51:19 UTCView event →
M 4.947 km NE of Pangai, Tonga40.3 km2018-08-25 18:50:53 UTCView event →
M 4.5296 km E of Levuka, Fiji608.4 km2018-08-26 02:48:27 UTCView event →
M 5.4118 km ENE of ‘Ohonua, Tonga10.0 km2018-08-26 07:26:06 UTCView event →
M 4.669 km WSW of Neiafu, Tonga109.2 km2018-08-27 03:59:51 UTCView event →
M 4.6270 km SE of Levuka, Fiji10.0 km2018-08-27 05:02:21 UTCView event →
M 4.6236 km E of Levuka, Fiji570.6 km2018-08-27 09:47:04 UTCView event →
M 4.7162 km ESE of Labasa, Fiji539.2 km2018-08-27 10:27:32 UTCView event →
M 4.5south of the Fiji Islands558.9 km2018-08-27 20:28:29 UTCView event →
M 4.6280 km E of Levuka, Fiji579.9 km2018-08-27 20:47:01 UTCView event →
M 4.6180 km NNE of Labasa, Fiji79.0 km2018-08-28 01:30:57 UTCView event →
M 5.7290 km E of Levuka, Fiji600.6 km2018-08-28 13:09:11 UTCView event →
M 4.5296 km E of Levuka, Fiji599.6 km2018-08-28 18:56:44 UTCView event →
M 4.5281 km E of Levuka, Fiji519.1 km2018-08-29 01:07:53 UTCView event →
M 5.8128 km NNE of Ba, Fiji23.0 km2018-08-29 01:24:57 UTCView event →
M 4.7Fiji region565.7 km2018-08-29 06:10:01 UTCView event →
M 4.5274 km E of Levuka, Fiji577.1 km2018-08-29 19:38:13 UTCView event →
M 4.9230 km SW of Haveluloto, Tonga181.7 km2018-08-30 07:57:01 UTCView event →
M 4.694 km NW of Hihifo, Tonga225.1 km2018-08-30 18:11:32 UTCView event →
M 4.6291 km E of Levuka, Fiji563.2 km2018-08-30 18:29:52 UTCView event →
M 4.8253 km W of Hihifo, Tonga10.0 km2018-08-30 19:32:37 UTCView event →
M 4.5south of the Fiji Islands330.2 km2018-09-01 17:21:08 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.

Blog

Latest from the blog

Guides, explainers and practical reading to go beyond the live data.

View all articles →