Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.0 on date 04-10-1989 and time 20:28:27 (Italy) in region 2 km NW Roccabruna (CN)

A magnitude Md 2.0 earthquake occured in region: 2 km NW Roccabruna (CN), on

  • 04-10-1989 19:28:27 (UTC)
  • 04-10-1989 20:28:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.4900, 7.3170 at 12 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Roccabruna CN 2 1585 1585
Cartignano CN 3 190 1775
Dronero CN 5 7035 8810
San Damiano Macra CN 5 430 9240
Villar San Costanzo CN 5 1547 10787
Valmala CN 7 52 10839
Montemale di Cuneo CN 7 241 11080
Melle CN 8 292 11372
Pradleves CN 8 250 11622
Monterosso Grana CN 9 505 12127
Frassino CN 10 265 12392
Brossasco CN 10 1084 13476
Valgrana CN 10 786 14262
Venasca CN 10 1437 15699
Celle di Macra CN 11 100 15799
Macra CN 11 59 15858
Rossana CN 11 908 16766
Caraglio CN 12 6836 23602
Isasca CN 12 76 23678
Castelmagno CN 12 66 23744
Busca CN 13 10181 33925
Brondello CN 14 290 34215
Sampeyre CN 14 1022 35237
Piasco CN 14 2774 38011
Bernezzo CN 15 4104 42115
Stroppo CN 15 103 42218
Martiniana Po CN 16 734 42952
Costigliole Saluzzo CN 16 3375 46327
Gambasca CN 16 371 46698
Pagno CN 17 585 47283
Rittana CN 17 109 47392
Cervasca CN 17 5013 52405
Valloriate CN 17 109 52514
Sanfront CN 17 2395 54909
Castellar CN 18 295 55204
Marmora CN 18 68 55272
Verzuolo CN 18 6459 61731
Rifreddo CN 18 1078 62809
Tarantasca CN 18 2122 64931
Gaiola CN 19 582 65513
Villafalletto CN 19 2925 68438
Elva CN 19 97 68535
Vignolo CN 19 2600 71135
Canosio CN 19 80 71215
Roccasparvera CN 19 741 71956
Revello CN 19 4262 76218
Demonte CN 19 2003 78221
Manta CN 19 3787 82008
Moiola CN 20 234 82242

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km W of Cuneo (56081 inhabitants)
64 Km SW of Moncalieri (57294 inhabitants)
71 Km SW of Torino (890529 inhabitants)
83 Km NW of Sanremo (54807 inhabitants)
84 Km SW of Asti (76202 inhabitants)
95 Km W of Savona (61345 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 2.0 1989-10-04
19:28:27		 44.49 7.317 12 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 101579
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-10-04 19:28:27 ± 0.132
Latitude 44.4900 ± 0.0099
Longitude 7.3170 ± 0.0151
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 101579

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) 1624.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00040
Epicentral distance of station farthest from the epicenter (degree) 0.01158
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitude information

Md:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 101579
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:34:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.LMR.Z. 1989-10-04T19:29:08.60 10.0 undecidable manual SN 206 1.2876 -0.18 0.6
--.LRG.Z. 1989-10-04T19:29:08.00 10.0 undecidable manual SN 213 1.2432 0.43 0.5
--.LPG.Z. 1989-10-04T19:29:02.80 10.0 undecidable manual SN 338 1.0767 -0.98 0.2
--.LSD.Z. 1989-10-04T19:29:00.00 10.0 undecidable manual SG 353 0.9657 -1.03 0.2
--.FRF.Z. 1989-10-04T19:29:00.60 10.0 undecidable manual SN! 207 1.0434 -2.3 0
--.PCP.Z. 1989-10-04T19:28:57.30 10.0 undecidable manual SG 86 0.8769 -0.6 0.5
--.LMR.Z. 1989-10-04T19:28:52.60 10.0 undecidable manual PN 206 1.2876 1.12 0.3
--.BNI.Z. 1989-10-04T19:28:51.80 10.0 undecidable manual SG 321 0.7215 -1.14 0.2
--.LRG.Z. 1989-10-04T19:28:51.40 10.0 undecidable manual PN 213 1.2432 0.62 0.9
--.IMI.Z. 1989-10-04T19:28:51.30 10.0 undecidable manual SG 144 0.7104 -1.3 0.1
--.FIN.Z. 1989-10-04T19:28:51.30 10.0 undecidable manual SG 113 0.6882 -0.83 0.3
--.SBF.Z. 1989-10-04T19:28:49.30 10.0 undecidable manual SG 172 0.6327 -0.76 0.4
--.LPG.Z. 1989-10-04T19:28:49.00 10.0 undecidable manual PN 338 1.0767 0.4 1.3
--.LPL.Z. 1989-10-04T19:28:49.10 10.0 undecidable manual PN 338 1.0989 0.2 1.5
--.FRF.Z. 1989-10-04T19:28:47.60 10.0 undecidable manual PN 207 1.0434 -0.49 1.2
--.LSD.Z. 1989-10-04T19:28:47.50 10.0 undecidable manual PG 353 0.9657 0.48 1.3
--.RRL.Z. 1989-10-04T19:28:46.40 10.0 undecidable manual SG 318 0.5661 -1.78 0
--.PCP.Z. 1989-10-04T19:28:45.60 10.0 undecidable manual PG 86 0.8769 0.4 1.5
--.ROB.Z. 1989-10-04T19:28:43.70 10.0 undecidable manual SG 115 0.4329 -0.18 0.8
--.FIN.Z. 1989-10-04T19:28:42.00 10.0 undecidable manual PG 113 0.6882 0.13 2
--.BNI.Z. 1989-10-04T19:28:42.50 10.0 undecidable manual PG 321 0.7215 0.16 2
--.IMI.Z. 1989-10-04T19:28:41.90 10.0 undecidable manual PG 144 0.7104 -0.25 1.9
--.SBF.Z. 1989-10-04T19:28:40.40 10.0 undecidable manual PG 172 0.6327 -0.27 1.9
--.RRL.Z. 1989-10-04T19:28:39.30 10.0 undecidable manual PG 318 0.5661 -0.3 1.8
--.ROB.Z. 1989-10-04T19:28:37.90 10.0 undecidable manual PG 115 0.4329 0.79 0.9
--.ENR.Z. 1989-10-04T19:28:37.80 10.0 undecidable manual SG 164 0.2664 -0.77 0.4
--.STV.Z. 1989-10-04T19:28:36.60 10.0 undecidable manual SG 177 0.2331 -0.87 0.3
--.ENR.Z. 1989-10-04T19:28:34.10 10.0 undecidable manual PG 164 0.2664 0.06 2
--.PZZ.Z. 1989-10-04T19:28:33.80 10.0 undecidable manual SG 275 0.1554 -1.03 0.2
--.STV.Z. 1989-10-04T19:28:33.50 10.0 undecidable manual PG 177 0.2331 0.09 2
--.DOI.Z. 1989-10-04T19:28:32.56 10.0 undecidable manual SG 284 0.0444 0.3 0.7
--.DOI.Z. 1989-10-04T19:28:31.13 10.0 positive manual PG 284 0.0444 0.73 2.1
--.PZZ.Z. 1989-10-04T19:28:31.80 10.0 undecidable manual PG 275 0.1554 -0.09 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