Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.2 on date 05-06-1986 and time 09:46:25 (UTC) in region NW Rezzo (IM)

A magnitude Md 2.2 earthquake occured in region: NW Rezzo (IM), on

  • 05-06-1986 09:46:25 (UTC)
  • 05-06-1986 11:46:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.0230, 7.8720 at 7 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Rezzo IM 0 366 366
Pieve di Teco IM 5 1338 1704
Pornassio IM 5 685 2389
Aurigo IM 6 347 2736
Montegrosso Pian Latte IM 7 118 2854
Cosio d'Arroscia IM 7 221 3075
Carpasio IM 7 168 3243
Caravonica IM 8 282 3525
Vessalico IM 8 282 3807
Borgomaro IM 8 865 4672
Armo IM 8 111 4783
Mendatica IM 8 185 4968
Molini di Triora IM 9 617 5585
Cesio IM 9 283 5868
Triora IM 9 355 6223
Lucinasco IM 10 272 6495
Borghetto d'Arroscia IM 10 456 6951
Montalto Ligure IM 11 377 7328
Chiusavecchia IM 11 577 7905
Chiusanico IM 11 607 8512
Briga Alta CN 12 39 8551
Prelà IM 12 503 9054
Vasia IM 12 389 9443
Badalucco IM 12 1136 10579
Ranzo IM 12 557 11136
Caprauna CN 12 104 11240
Aquila d'Arroscia IM 13 166 11406
Testico SV 13 196 11602
Casanova Lerrone SV 14 749 12351
Dolcedo IM 14 1415 13766
Alto CN 14 128 13894
Ormea CN 14 1617 15511
Pontedassio IM 15 2323 17834
Pietrabruna IM 15 501 18335
Stellanello SV 15 808 19143
Onzo SV 15 219 19362
Diano Arentino IM 16 722 20084
Nasino SV 16 207 20291
Civezza IM 17 609 20900
Vendone SV 17 388 21288
Castellaro IM 18 1256 22544
Ceriana IM 18 1250 23794
Ortovero SV 18 1586 25380
Bajardo IM 18 312 25692
Garlenda SV 18 1254 26946
Villa Faraldi IM 19 444 27390
Diano San Pietro IM 19 1145 28535
Terzorio IM 19 216 28751
Castel Vittorio IM 19 287 29038
Pompeiana IM 19 823 29861
Diano Castello IM 19 2214 32075
Castelbianco SV 19 330 32405
Pigna IM 19 859 33264
Cipressa IM 20 1290 34554
Costarainera IM 20 828 35382
Imperia IM 20 42034 77416
Taggia IM 20 14116 91532
Arnasco SV 20 645 92177

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Sanremo (54807 inhabitants)
49 Km SE of Cuneo (56081 inhabitants)
58 Km SW of Savona (61345 inhabitants)
95 Km W of Genova (586655 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		Md 2.2
M 2.5 		1986-06-05
09:46:25		 44.023 7.872 7 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 28729
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-06-05 09:46:25 ± 0.152
Latitude 44.0230 ± 0.0079
Longitude 7.8720 ± 0.0189
Depth (km) 7 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 28729

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 1745.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 119
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00089
Epicentral distance of station farthest from the epicenter (degree) 0.01101
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 28729
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:30:08

M:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 28729
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:48:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.LRG.Z. 1986-06-05T09:47:06.40 10.0 undecidable manual SN 243 1.221 0.53 0.3
--.LMR.Z. 1986-06-05T09:47:04.60 10.0 undecidable manual SN 235 1.1988 -0.59 0.2
--.FRF.Z. 1986-06-05T09:46:59.20 10.0 undecidable manual SG 242 0.9879 -0.61 0.2
--.SOO.Z. 1986-06-05T09:46:50.60 10.0 undecidable manual SG 311 0.7326 -0.7 0.2
--.LRG.Z. 1986-06-05T09:46:50.00 10.0 undecidable manual PN 243 1.221 1.29 0
--.DA9.Z. 1986-06-05T09:46:49.00 10.0 undecidable manual SG 317 0.6549 0.11 0.7
--.LMR.Z. 1986-06-05T09:46:48.20 10.0 undecidable manual PN 235 1.1988 -0.11 1.2
--.FRF.Z. 1986-06-05T09:46:45.20 10.0 undecidable manual PG 242 0.9879 0 1.3
--.STV.Z. 1986-06-05T09:46:41.10 10.0 undecidable manual SG 300 0.444 -1.17 0
--.SOO.Z. 1986-06-05T09:46:40.70 10.0 undecidable manual PG 311 0.7326 0.41 1.1
--.DA9.Z. 1986-06-05T09:46:39.00 10.0 undecidable manual PG 317 0.6549 0.1 1.7
--.ENR.Z. 1986-06-05T09:46:39.50 10.0 undecidable manual SG 302 0.3774 -0.58 0.3
--.SBF.Z. 1986-06-05T09:46:38.60 10.0 undecidable manual SG 243 0.3552 -0.44 0.5
--.ROB.Z. 1986-06-05T09:46:36.70 10.0 undecidable manual SG 0 0.2775 0.44 0.7
--.FIN.Z. 1986-06-05T09:46:36.60 10.0 undecidable manual SG 52 0.2997 -0.61 0.3
--.STV.Z. 1986-06-05T09:46:34.90 10.0 undecidable manual PG 300 0.444 -0.18 1.6
--.SBF.Z. 1986-06-05T09:46:33.60 10.0 undecidable manual PG 243 0.3552 0.39 1.3
--.ENR.Z. 1986-06-05T09:46:33.70 10.0 undecidable manual PG 302 0.3774 -0.11 1.7
--.FIN.Z. 1986-06-05T09:46:31.80 10.0 undecidable manual PG 52 0.2997 -0.36 1.3
--.ROB.Z. 1986-06-05T09:46:31.80 10.0 undecidable manual PG 0 0.2775 0.19 3.2
--.IMP.Z. 1986-06-05T09:46:27.80 10.0 undecidable manual PG 171 0.0999 -0.19 3.2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download